--- title: "$29 Cheap Flights to Longmont, CO - Expedia" description: "Looking for cheap flights to Longmont? Many airlines offer no change fee on selected flights and book now to earn your airline miles on top of our rewards! Find great 2026 Longmont flight deals now!" canonical: "https://www.expedia.com/Cheap-Flights-To-Longmont.d8406.Travel-Guide-Flights" language: en-US market: US currency: USD prices_as_of: 2026-11-13T08:44:54Z --- # $29 Cheap Flights to Longmont, CO ![A snow-capped mountain range with a visible moon in the sky.](https://images.trvl-media.com/place/8406/c4cdce18-2e7e-4ae2-b95f-457cc9b70304.jpg?impolicy=fcrop&w=1200&h=500&q=medium) [View $29 flight on Wed, Dec 2, 2026](https://www.expedia.com/Flights-Search?leg1=from:LAX,to:DEN,departure:12/2/2026TANYT&trip=oneway&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:28.98&airProductToken=AQoxCi8IxnISBDIzNDIYi7gBIINpKPngngMwi-KeAzhFQABYAWoEUENfMXIHSzE0WFhTMxIKCAEQARgBKgJGORgBIgQIARABKAIoAygEMA0) ## Popular airlines to Longmont [Frontier Airlines](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Longmont,%20Colorado,%20United%20States%20of%20America,departure:11/27/2026TANYT&leg2=from:Longmont,%20Colorado,%20United%20States%20of%20America,to:CMH,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) [Alaska Airlines](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Longmont,%20Colorado,%20United%20States%20of%20America,departure:11/27/2026TANYT&leg2=from:Longmont,%20Colorado,%20United%20States%20of%20America,to:CMH,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) [American Airlines](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Longmont,%20Colorado,%20United%20States%20of%20America,departure:11/27/2026TANYT&leg2=from:Longmont,%20Colorado,%20United%20States%20of%20America,to:CMH,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) [United](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Longmont,%20Colorado,%20United%20States%20of%20America,departure:11/27/2026TANYT&leg2=from:Longmont,%20Colorado,%20United%20States%20of%20America,to:CMH,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) [Delta](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Longmont,%20Colorado,%20United%20States%20of%20America,departure:11/27/2026TANYT&leg2=from:Longmont,%20Colorado,%20United%20States%20of%20America,to:CMH,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) [Southwest Airlines](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Longmont,%20Colorado,%20United%20States%20of%20America,departure:11/27/2026TANYT&leg2=from:Longmont,%20Colorado,%20United%20States%20of%20America,to:CMH,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) [JetBlue Airways](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Longmont,%20Colorado,%20United%20States%20of%20America,departure:11/27/2026TANYT&leg2=from:Longmont,%20Colorado,%20United%20States%20of%20America,to:CMH,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}]) ## How much is the cheapest flight to Longmont? Prices were available within the past 7 days and start at $29 for one-way flights and $58 for roundtrip, for the period specified. Prices and availability are subject to change. All deals One way Roundtrip [Select Frontier Airlines flight, departing Thu, Dec 3 from Columbus to Denver, returning Thu, Dec 10, priced at $178 Found 14 hours ago](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:DEN,departure:12/3/2026TANYT&leg2=from:DEN,to:CMH,departure:12/10/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:177.96&airProductToken=AQoxCi8IxnISBDE2OTMYgjsgg2ko9-ueAzDB7Z4DOEVAAFgBagRQQ18xcghHMjFSWFM5QQoxCi8IxnISBDE2OTQYg2kggjsohLmfAzC0up8DOEVAAFgBagRQQ18xcghHMTRSWFM5QRIKCAEQARgBKgJGORgBIgQIARABKAIoAygEMA0) Thu, Dec 3 - Thu, Dec 10 · CMH · DEN · Roundtrip [Select Southwest Airlines flight, departing Wed, Jan 6 from Columbus to Denver, returning Wed, Jan 13, priced at $329 Found 1 hour ago](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:DEN,departure:1/6/2027TANYT&leg2=from:DEN,to:CMH,departure:1/13/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:328.79&airProductToken=AQowCi4I15wBEgQxMDk1GII7IINpKMjkoQMwkOahAzhWQABYAWoDV0dBcgdWRE5WTjJHCi8KLQjXnAESAzQzNRiDaSCCOyjRtqIDMPu3ogM4VkAAWAFqA1dHQXIHVkROVk4yRxIMCAEQARgBKgJXTjIAGAEiBAgBEAEoAigDKAQwAQ) Wed, Jan 6 - Wed, Jan 13 · CMH · DEN · Roundtrip [Select United flight, departing Wed, Feb 10 from Columbus to Denver, returning Sat, Feb 20, priced at $329 Found 3 hours ago](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:DEN,departure:2/10/2027TANYT&leg2=from:DEN,to:CMH,departure:2/20/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:328.79&airProductToken=AQo3CjUI1YIBEgM3MjgYgjsgg2koqu-kAzD-8KQDOE5AAFgBagoxX2Jhc2ljZWNvcghMQUsyQUtCUwo4CjYI1YIBEgQxODQzGINpIII7KJHlpQMwu-alAzhOQABYAWoKMV9iYXNpY2Vjb3IITEFLMkFLQlMSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) Wed, Feb 10 - Sat, Feb 20 · CMH · DEN · Roundtrip [Select American Airlines flight, departing Wed, Feb 3 from Columbus to Denver, returning Sat, Feb 13, priced at $349 Found 14 hours ago](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:DEN,departure:2/3/2027TANYT&leg2=from:DEN,to:CMH,departure:2/13/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:348.39&airProductToken=AQpoCjIIwYIBEgQxOTg0GII7IOKaASi8n6QDMKKgpAM4QkAAWAFqBUJBU0lDcghOVkFJVVNCVgoyCMGCARIEMjM4MRjimgEgg2ko3qCkAzDGoqQDOEJAAVgBagVCQVNJQ3IITlZBSVVTQlYKZgoxCMGCARIEMjIzOBiDaSCuHCjsk6UDMIyVpQM4QkAAWAFqBUJBU0lDcghOVkFJVVNCVgoxCMGCARIENDA5MRiuHCCCOyiolqUDMIGXpQM4QkABWAFqBUJBU0lDcghOVkFJVVNCVhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) Wed, Feb 3 - Sat, Feb 13 · CMH · DEN · Roundtrip [Select Delta flight, departing Wed, Jan 6 from Columbus to Denver, returning Wed, Jan 13, priced at $359 Found 1 hour ago](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:DEN,departure:1/6/2027TANYT&leg2=from:DEN,to:CMH,departure:1/13/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:358.40&airProductToken=AQpuCjUIxJgBEgQzNzQ0GII7IMx8KOLmoQMw5-ehAzhFQABYAWoJTUFJTkJBU0lDcghWQVZTSDNCQwo1CMSYARIEMTAyNRjMfCCDaSiG6aEDMIjqoQM4RUABWAFqCU1BSU5CQVNJQ3IIVkFWU0gzQkMSDAgBEAEYASoCREwyABgBIgQIARABKAIoAygEMAE) Wed, Jan 6 - Wed, Jan 13 · CMH · DEN · Roundtrip ## Alternative airports near Longmont Prices were available within the past 7 days. Prices and availability are subject to change. [Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 47 minutes. Flights from $552](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:DEN,departure:11/27/2026TANYT&leg2=from:DEN,to:CMH,departure:11/29/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) 47 min ## Find the cheapest month to fly from Columbus (CMH) to Denver (DEN) ### December is typically the cheapest month to fly From $169 - $366 per traveler. View flights in December Insights are based on prices from searches for economy trips of 10 days or less on our sites in the last 12 months. Insights are informative only and current prices may differ. ## Book with confidence ### Flights to Longmont at a glance Traveling to Longmont is easy; you can choose from either full-service or budget airlines. Compare journey times and select the flights to Longmont that best fit your budget and itinerary, allowing you to explore the city's renowned attractions and neighborhoods. - **Major airport near Longmont**: Denver International Airport (DEN) - **Flights per week**: 6,750+ flights arriving at Longmont airport - **Number of airlines that fly to Longmont**: around 65+ carriers ### Popular airport near Longmont Longmont is a charming city perfect for outdoor enthusiasts, adventure seekers, and those looking to relax amidst beautiful scenery. Visitors are drawn here for a variety of reasons, including family outings and wellness retreats. The city is conveniently connected by a major airport, making travel easy for all. - **Denver International Airport ([DEN](https://www.expedia.com/cheap-flights-to-denver-intl.d5129540.travel-guide-flights)):** Situated in Denver County, Colorado, approximately 32 miles from Longmont, this airport is a significant hub for both domestic and international flights, linking to over 295 domestic cities and more than 200 international locations. Travelers can opt for enhanced comfort by choosing first class, premium economy, or business class seating, depending on the airline and specific routes. Noteworthy airlines operating at this airport include United, Frontier Airlines, and Southwest Airlines. ### Top routes to Longmont - New York (JFK/LGA) to Longmont (DEN), with one-way tickets available from around $85 - Chicago (ORD/MDW) to Longmont (DEN), with one-way flight options from around $50 - Los Angeles (LAX) to Longmont (DEN), with one-way airfare from around $45 - Boston (BOS) to Longmont (DEN), with one-way flights starting at around $90 - Dallas (DFW/DAL) to Longmont (DEN), with one-way tickets available from around $35 ### Cheapest routes to Longmont - Vail (EGE) to Longmont (DEN), with cheap one-way fares from around $25 - Dallas (DFW/DAL) to Longmont (DEN), with cheap one-way fares from around $35 - Salt Lake City (SLC) to Longmont (DEN), with budget one-way fares from around $35 - El Paso (ELP) to Longmont (DEN), with cheap one-way fares from around $35 - San Diego (SAN) to Longmont (DEN), with affordable one-way prices from around $35 \*Flight times and fares vary by season and availability and are based on one-way routes ### Top airlines with flights to Longmont - **[United](https://www.expedia.com/united-flights.cua.travel-guide-airlines):** Operating flights to Denver International Airport (DEN), United represents roughly 38% of arrivals in Longmont. The average fare for a one-way ticket is about $360, with options for premium service such as premium economy, business, and first class depending on the route. - **[Southwest Airlines](https://www.expedia.com/southwest-airlines-flights.cwn.travel-guide-airlines):** This airline services Denver International Airport (DEN) and accounts for approximately 21% of Longmont's arrivals. Passengers can expect an average one-way fare of around $200. - **[Frontier Airlines](https://www.expedia.com/frontier-airlines-flights.cf9.travel-guide-airlines):** Providing flights to Denver International Airport (DEN), Frontier Airlines makes up about 12% of arrivals into Longmont. The typical one-way fare is approximately $140, making it a cost-effective choice for travelers. - **[American Airlines](https://www.expedia.com/american-airlines-flights.caa.travel-guide-airlines):** Serving Denver International Airport (DEN), American Airlines also accounts for around 12% of arrivals to Longmont. The average one-way fare is about $360, with first class available as a premium service based on the route. - **[Delta](https://www.expedia.com/delta-flights.cdl.travel-guide-airlines):** Operating flights to Denver International Airport (DEN), Delta contributes roughly 10% of arrivals to Longmont. The average fare for a one-way ticket is around $310, with premium cabins including premium economy, business, and first class depending on the route. ### Best time to fly to Longmont The most popular months for travelers to fly to Longmont are **January, March, and April**, when peak temperatures in Longmont can reach up to 46°F in April. If you prefer quieter travel, consider **September**, the least busy time to visit with temperatures around 65.3°F and typically the lowest average one-way fare (around **$177**), roughly 9% cheaper than the yearly average. Looking for additional cheaper months to fly? **October, August, and February** offer average one-way fares of around **$184**, making them good options for flexible travelers. | **Month** | **Temperature** | **Precipitation** | **Cloudiness** | **Demand** | **Average one-way Fare** | | --------- | --------------- | ----------------- | -------------- | --------------- | ------------------------ | | January | 27.7°F (-2.4°C) | No Rain (Dry) | Mostly Sunny | Moderately High | $203 | | February | 28.6°F (-1.9°C) | No Rain (Dry) | Mostly Sunny | Average | $188 | | March | 39.0°F (3.9°C) | No Rain (Dry) | Mostly Sunny | Moderately High | $216 | | April | 46.0°F (7.8°C) | Light Rain | Mostly Sunny | Moderately High | $198 | | May | 55.0°F (12.8°C) | Light Rain | Mostly Sunny | Moderately Low | $189 | | June | 68.0°F (20.0°C) | Light Rain | Sunny | Average | $204 | | July | 73.4°F (23.0°C) | Light Rain | Sunny | Average | $196 | | August | 72.1°F (22.3°C) | No Rain (Dry) | Sunny | Average | $185 | | September | 65.3°F (18.5°C) | No Rain (Dry) | Sunny | Moderately Low | $177 | | October | 49.6°F (9.8°C) | No Rain (Dry) | Sunny | Average | $181 | | November | 37.8°F (3.2°C) | No Rain (Dry) | Sunny | Moderately Low | $194 | | December | 28.2°F (-2.1°C) | No Rain (Dry) | Sunny | Average | $212 | \*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand. ### How to save money on a flight to Longmont Getting some of the best [deals on flights](https://www.expedia.com/flight-deals) to Longmont is all about timing and flexibility. Here are some key tips to help you save: 1. **Compare flight options**—use **Expedia's search tool** to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also **sort by price** to find the most affordable options. 2. **Set up price alerts**—as an Expedia member you can use [Price Tracking](https://www.expedia.com/why/price-tracking) to receive notifications when flight prices change. 3. **Bundle and save**—book a flight and unlock a hotel deal on Expedia\*, or explore our [Longmont hotel and flight deals](https://www.expedia.com/longmont.d8406.destination-travel-guides). 4. **Think about luggage**\-nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your baggage allowance before confirming your booking to avoid excess baggage fees at the airport. 5. **Earn miles**—you can earn airline miles when you book your Longmont flight with Expedia. Just select your frequent flyer program and enter your program number when confirming your booking. \*For members. Select hotels. ### Arriving in Longmont Longmont welcomes travelers through its range of transport options based on price, convenience, and proximity. Here's how to reach Longmont efficiently: - **Public transportation:** From Denver International Airport, Jeppesen Terminal Station, a metro station, is conveniently located just 0.1 miles from the airport, providing easy access for travelers looking to continue their journey. - **Hotel transfer:** Transfers offer a convenient way to reach your hotel in Longmont, with private rides that can be arranged in advance. - **Car rental:** Renting a car in Longmont is a good option if you plan to explore and sightsee beyond the city. Browse [cheap car rentals in Longmont](https://www.expedia.com/car-rentals-in-longmont.d8406.car-rental-guide) on Expedia. - **Taxi/ride-hailing:** Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival. ### Where to stay in and around Longmont - **[Niwot](https://www.expedia.com/Niwot-Hotels.d6023562.Travel-Guide-Hotels)**: Nestled in the area of Longmont, Niwot is a charming village that beckons outdoor enthusiasts and adventure seekers alike. With access to recreational areas and ski fields, it's an ideal spot for winter sports and summer hikes. Key attractions include the University of Colorado Boulder, where you can appreciate modern architecture, and the stunning Flatirons, perfect for breathtaking views and outdoor activities. Don't miss the Longmont Museum for a taste of local culture and history, making Niwot a delightful destination year-round. - **[Dacono](https://www.expedia.com/Dacono-Hotels.d3000344511.Travel-Guide-Hotels)**: Located 13 miles drive away from Longmont, Dacono is a vibrant city perfect for those looking to immerse themselves in outdoor adventures and scenic landscapes. Visitors can enjoy a variety of activities, from exploring recreational areas to experiencing the local arena for entertainment. Notable highlights include the University of Colorado Boulder, and the expansive Saint Vrain State Park, which offers excellent opportunities for outdoor exploration. The Longmont Museum also provides a glimpse into the region's rich history, making Dacono a well-rounded stop for travelers. - **[Lafayette](https://www.expedia.com/Lafayette-Hotels.d123137.Travel-Guide-Hotels)**: Lafayette, located 12 miles drive away from Longmont, is an inviting city that offers a blend of outdoor activities and scenic beauty. Ideal for family outings, the Great Bark Dog Park is a popular spot, while golf courses and recreational areas cater to adventure lovers. Visitors can explore the University of Colorado Boulder for a taste of academia and enjoy the iconic Flatirons for stunning natural views. Lafayette's mix of education and leisure creates an appealing destination for various interests throughout the year. ### Tips for short-haul flights to Longmont For quick getaways, efficiency is key. Here is how to make your short-haul journey smoother: - **Pack light and skip checked bags**—when flying with budget airlines, it's often more economical to travel with just a carry-on. Maximize your space by utilizing mini toiletries, wearing your bulkiest clothing, and planning your outfits wisely. This approach also helps you avoid the wait at baggage claim upon arrival. - **Bring your own entertainment**—many short-haul flights may not provide in-flight entertainment options. Download your favorite TV shows, movies, music, or podcasts ahead of time, and consider bringing a book to keep yourself engaged. Don’t forget to charge your devices fully before you board. - **Arrive at the airport in plenty of time**—even for short or domestic flights, it’s advisable to arrive at least 1.5 to 2 hours before your departure, taking into account traffic conditions and security lines. - **Bring your own snacks and water**—pack some snacks and a refillable water bottle to stay hydrated while saving money at the airport. ### Tips for long-haul flights to Longmont Flying long-haul sometimes requires extra planning to ensure a comfortable journey: - **Select your seat in advance**—for longer flights, choosing your seat is crucial for comfort. Full-service airlines typically allow you to select your seat for free once online check-in opens, which is generally 24–48 hours prior to your flight. Some airlines provide the option to select a seat even earlier. - **Arrive at the airport in plenty of time**—aim to arrive at the airport at least 3 hours before departure for international flights to accommodate check-in, security, and immigration processes. - **Relax at the airport**—if you find yourself with extra time, take the opportunity to explore the shops, enjoy a coffee, or unwind at the gate or in a departure lounge if you have access. Airport Wi-Fi is typically free and readily available. - **Adjust to the new time zone mid-flight**—begin syncing your body clock by setting your watch and modifying your sleep schedule to align with your destination's time zone. Try to sleep or stay awake during the flight according to the local time at your arrival location to help minimize jet lag. ### Tips to find the cheapest flights to Longmont ### The cheapest day to fly Get started finding a cheap flight to Longmont on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you. ### The cheapest month to fly January is the cheapest month to fly to Longmont. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to Longmont. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute. ### The most affordable time to book a flight Typically, a Sunday can be the cheapest time to book a flight to Longmont, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation. ### The cheapest round-trip tickets to Longmont The lowest price for round-trip flights to Longmont in 2026 starts from $58, while one-way tickets start from from $29\. Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to Longmont. If you have a preferred departure time or airline, you can use the handy filters to customize your search. ### The cheapest airlines flying to Longmont Frontier Airlines, Southwest Airlines, United, Delta, American Airlines are just some of the airlines that can typically offer cheap tickets to Longmont. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to Longmont and countless more destinations worldwide. ### The most affordable airports to fly into To view the cheapest airports to fly into for Longmont, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to Longmont. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia. ### Save with a package With Expedia's amazing [package deals](https://www.expedia.com/package-deals), you could save hundreds of dollars by booking your Longmont plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving. ### Date flexibility for the cheapest flights to Longmont If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to Longmont. ### Stopover savings The cheapest tickets to Longmont are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to Longmont. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved. ### Get Expedia's Price Drop Protection Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference\*. This gives you peace of mind that you're getting one of the cheapest flights to Longmont for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members. *\*Terms apply.* ### Use our Price Tracking feature Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to Longmont. Simply download the free Expedia app to your smart device and activate Longmont flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices. ### Book with Expedia As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to Longmont. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too. *Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages.* ## Frequently Asked Questions ### What month is the cheapest to fly to Longmont? Schedule your trip for January if you want to land a deal on your fare. It's the cheapest month to fly to Longmont. Try to avoid traveling during peak periods such as school vacation time or public holidays. ### Which US cities have the cheapest flights to Longmont? Typically, Chicago, Phoenix and Dallas offer cheap flights to Longmont. However, flexibility is always key to scoring yourself a bargain. Book midweek or during the off-peak season to keep costs down. ### Which US cities fly direct to Longmont? Choose from 164 US destinations with direct flights to Longmont. While booking on Expedia, click on "Direct flights only" to compare nonstop options. Fly to Longmont from any of these cities: - Chicago - Phoenix - Dallas - Las Vegas - Salt Lake City ### How to find a cheap flight to Longmont? Book in advance or look for a cheap flight to Longmont during the off-season, such as December and January. Flying off on a Thursday could also save you an average of 16% compared to a Sunday flight.\* The [Expedia app](https://www.expedia.com/app) makes it even easier to know exactly when to book. Just turn on the toggle for "Watch prices" and you'll get notified when fares drop. *\*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.* ### How to get a cheap last-minute flight to Longmont? You can find awesome deals on last-minute flights to Longmont, especially if your plans aren't set in stone. Consider flying from a different airport, changing your trip dates or picking an alternative carrier to get a cheap flight to Longmont. ### How far in advance should I book a flight to Longmont? Find the travel dates you want and a price your budget will love by booking your domestic flight to Longmont up to 28 days in advance. Search for tickets between two and four months ahead if you're traveling to Longmont from an international destination.\* *\*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.* ### Which day of the week is the cheapest day to buy a plane ticket to Longmont? Sundays are generally the best day to book a cheap flight to Longmont, with savings of about 8% on average compared to Fridays. If you decide to buy tickets on a Friday, expect to spend more as this is typically the most expensive day.\* *\*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.* ### Which airlines fly to Longmont? There are 19 airlines that connect Longmont with 194 airports around the globe. The key point of arrival to this city is Denver Intl. Airport (DEN). Book a fare with any of these leading airlines to Longmont: - United Airlines - American Airlines - Delta Air Lines - Frontier Airlines ### Where do you fly into Longmont? Longmont's main gateway is Denver Intl. Airport (DEN). If you'd like more nearby options when flying to Longmont, check out Boulder, CO (WBU-Boulder Municipal), Broomfield, CO (BJC-Rocky Mountain Metropolitan) or Fort Collins, CO (FNL-Fort Collins-Loveland Municipal). You can also fly to Longmont through Greeley, CO (GXY-Weld County). ### How far is the airport from central Longmont? If you're arriving at Denver Intl. Airport (DEN), you'll be about 30 mi southeast of the center of Longmont. ### Can I save money by booking a Longmont trip package? Bundle your accommodations and flights and you could save hundreds of dollars. Better yet, you can add extras like activities and car rentals to your [Longmont flight and hotel package deal](https://www.expedia.com/Longmont.d8406.Destination-Travel-Guides). With Expedia, it's simple to book all your Longmont travel arrangements in one place. ### Can I change or cancel my flight to Longmont? It's often possible to change or cancel your flight to Longmont. Many airlines allow you to cancel your flight for free within 24 hours of booking. However, some flights are non-refundable, and airlines may issue you credit for a future flight instead of a direct refund. To find affordable flights to Longmont with flexible change policies, pick the "No cancel fee" or "Changes included" filters when you search. Want more information? Go to our [Customer Service Portal](https://www.expedia.com/service/?langid=1033). ## Travel information | Destination city name | Denver | | ----------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Denver Intl. Airport | | Destination airport IATA code | DEN | | Airlines serving | Frontier Airlines, Alaska Airlines, American Airlines, United, Delta, Southwest Airlines, JetBlue Airways, Air Canada, Lufthansa, British Airways, Aeromexico, Sun Country Airlines, KLM, Brussels Airlines, Iberia, Air France, Volaris, Finnair, Icelandair, Turkish Airlines, Virgin Atlantic, Aer Lingus, Austrian Airlines, Swiss International Air Lines, WestJet, Copa, Avianca, SAS, LATAM Airlines Group, Japan Airlines, All Nippon Airways, Korean Air, TAP Portugal, Cathay Pacific, Qatar Airways, Denver Air Connection | | Popular airline | Frontier Airlines | | Roundtrip price | $178 | ## Explore a world of travel with Expedia - [Lodging](?equalTargetTab=tab-0) - [Flights](?equalTargetTab=tab-1) - [Packages](?equalTargetTab=tab-2) - [Cars](?equalTargetTab=tab-3) - [Fort Collins Hotels](https://www.expedia.com/Fort-Collins-Hotels.d602992.Travel-Guide-Hotels) - [Denver Hotels](https://www.expedia.com/Denver-Hotels.d178254.Travel-Guide-Hotels) - [Estes Park Hotels](https://www.expedia.com/Estes-Park-Hotels.d7854.Travel-Guide-Hotels) - [Longmont Hotels](https://www.expedia.com/Longmont-Hotels.d8406.Travel-Guide-Hotels) - [Hotels near Rocky Mountain National Park](https://www.expedia.com/Rocky-Mountain-National-Park-Hotels.0-l6130051-0.Travel-Guide-Filter-Hotels) - [Boulder Hotels](https://www.expedia.com/Boulder-Hotels.d6051762.Travel-Guide-Hotels) - [Loveland Hotels](https://www.expedia.com/Loveland-Hotels.d10022.Travel-Guide-Hotels) - [Cabin Rentals in Estes Park](https://www.expedia.com/Estes-Park-Cabins.d7854-aaCabins.Travel-Guide-Accommodation) - [Downtown Denver Hotels](https://www.expedia.com/Downtown-Denver-Denver-Hotels.0-n800030-0.Travel-Guide-Filter-Hotels) - [Black Hawk Hotels](https://www.expedia.com/Black-Hawk-Hotels.d6049966.Travel-Guide-Hotels) - [Hotels near Ball Arena](https://www.expedia.com/Ball-Arena-Hotels.0-l6071513-0.Travel-Guide-Filter-Hotels) - [Hotels with Free Airport Shuttle in Denver](https://www.expedia.com/Denver-Hotels-Hotels-With-Free-Airport-Shuttle.0-0-d178254-tHotelswithFreeAirportShuttle.Travel-Guide-Filter-Hotels) - [Hotels near Denver Intl.](https://www.expedia.com/Denver-Intl-Airport-Hotels.0-aDEN-0.Travel-Guide-Filter-Hotels) - [Cabin Rentals in Denver](https://www.expedia.com/Denver-Cabins.d178254-aaCabins.Travel-Guide-Accommodation) - [Cabin Rentals in Colorado](https://www.expedia.com/Colorado-Cabins.d207-aaCabins.Travel-Guide-Accommodation) - [Cheap Hotels in Denver](https://www.expedia.com/Denver-Hotels-Cheap-Hotels.0-0-d178254-tCheapHotels.Travel-Guide-Filter-Hotels) - [Flights to Lafayette](https://www.expedia.com/Cheap-Flights-To-Lafayette.d123137.Travel-Guide-Flights) - [Flights from Kansas City (MCI) to Denver (DEN)](https://www.expedia.com/lp/flights/mci/den/kansas-city-to-denver) - [Flights from Cincinnati (CVG) to Denver (DEN)](https://www.expedia.com/lp/flights/cvg/den/cincinnati-to-denver) - [Flights from Newark Liberty Intl. 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[Colorado Vacations](https://www.expedia.com/Colorado.d207.Destination-Travel-Guides) - [Denver Vacations](https://www.expedia.com/Denver.d178254.Destination-Travel-Guides) - [Rental cars Denver Intl. airport](https://www.expedia.com/Car-Rentals-In-Denver-Intl.d5129540.Car-Rental-Guide) - [Car rental Boulder](https://www.expedia.com/Car-Rentals-In-Boulder.d6051762.Car-Rental-Guide) - [Car rental Longmont](https://www.expedia.com/Car-Rentals-In-Longmont.d8406.Car-Rental-Guide) - [Car rentals near Denver](https://www.expedia.com/Car-Rentals-In-Denver.d178254.Car-Rental-Guide) ## Trending flights to Longmont Prices were available within the past 7 days and start at $29 for one-way flights and $58 for roundtrip, for the period specified. Prices and availability are subject to change. All deals One way Roundtrip [Select Frontier Airlines flight, departing Wed, Jan 6 from Ontario to Denver, returning Wed, Jan 13, priced at $58 Just found](https://www.expedia.com/Flights-Search?leg1=from:ONT,to:DEN,departure:1/6/2027TANYT&leg2=from:DEN,to:ONT,departure:1/13/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:57.96&airProductToken=AQoyCjAIxnISBDE1MDAYrpsBIINpKPHloQMwgeehAzhFQABYAWoEUENfMXIISzE0WFhTOUEKMgowCMZyEgQxMjYxGINpIK6bASiBvKIDMJK9ogM4RUAAWAFqBFBDXzFyCEsxNFhYUzlBEgoIARABGAEqAkY5GAEiBAgBEAEoAigDKAQwDQ) Wed, Jan 6 - Wed, Jan 13 · ONT · DEN · Roundtrip \*Available to One Key members. ## Other language versions ```yaml hreflang: x-default: https://www.expedia.com/Cheap-Flights-To-Longmont.d8406.Travel-Guide-Flights es-ES: https://www.expedia.es/Vuelos-Baratos-A-Longmont.d8406.Guia-Viajes-Vuelos fr-BE: https://www.expedia.be/fr/Vols-Longmont.d8406.Guide-De-Vol de-AT: https://www.expedia.at/Billigflug-Longmont.d8406.Reise-Angebote-Flug en-CA: https://www.expedia.ca/Cheap-Flights-To-Longmont.d8406.Travel-Guide-Flights ar: https://www.expedia.sa/Cheap-Flights-To-Longmont.d8406.Travel-Guide-Flights sv-SE: https://www.expedia.se/Flyg-Till-Longmont.d8406.Reseguide-Flyg en-IE: https://www.expedia.ie/Flights-To-Longmont.d8406.Travel-Guide-Flights es-MX: https://www.expedia.mx/Vuelos-Baratos-Longmont.d8406.Guia-de-vuelos en-US: https://www.expedia.com/Cheap-Flights-To-Longmont.d8406.Travel-Guide-Flights it-IT: https://www.expedia.it/Voli-Per-Longmont.d8406.Guida-Voli-aerei en-IN: https://www.expedia.co.in/Cheap-Flights-To-Longmont.d8406.Travel-Guide-Flights zh-CN: https://www.expedia.com/cn/Flights-To-Longmont.d8406.Travel-Guide-Flights en-HK: https://www.expedia.com.hk/en/Flights-To-Longmont.d8406.Travel-Guide-Flights fi-FI: https://www.expedia.fi/Halvat-Lennot-Longmont.d8406.Matkaopas-Lennot fr-FR: https://www.expedia.fr/Vols-Pas-Cher-Longmont.d8406.Voyage-Guide-Vols nl-BE: https://www.expedia.be/Destinations-In-Longmont.d8406.Vliegtickets en-NZ: https://www.expedia.co.nz/Flights-To-Longmont.d8406.Travel-Guide-Flights en-SG: https://www.expedia.com.sg/Cheap-Flights-To-Longmont.d8406.Travel-Guide-Flights en-JP: https://www.expedia.co.jp/en/Cheap-Flights-To-Longmont.d8406.Travel-Guide-Flights en-AU: https://www.expedia.com.au/Flights-To-Longmont.d8406.Travel-Guide-Flights en-GB: https://www.expedia.co.uk/Cheap-Flights-To-Longmont.d8406.Travel-Guide-Flights es: https://www.expedia.com/es/Vuelos-Baratos-Longmont.d8406.Guia-de-vuelos de-DE: https://www.expedia.de/Billigflug-Longmont.d8406.Reise-Angebote-Flug en-KR: https://www.expedia.co.kr/en/Cheap-Flights-To-Longmont.d8406.Travel-Guide-Flights ```