$145 Cheap Flights to Garrison, MT

Flights to Garrison at a glance

Traveling to Garrison is easy—simply select from a range of full-service or budget airlines, compare travel times, and choose the flight that best fits your budget and schedule as you plan to explore the city’s renowned attractions and neighborhoods.

• Major airports near Garrison: Missoula International Airport (MSO), Helena Regional Airport (HLN), Bert Mooney Airport (BTM)
• Closest airport to Garrison: Helena Regional Airport, HLN (around 40 miles)
• Flights per week: 1,600+ flights arriving across Garrison airports
• Number of airlines that fly to Garrison: around 10+ carriers

Popular airports near Garrison

Garrison is a charming city ideal for outdoor enthusiasts, scenic getaways, and adventurous vacations. Visitors flock to Garrison for its stunning landscapes, romantic spots, wellness retreats, and relaxation opportunities. The city is conveniently accessible via three major airports.

• Missoula International Airport (MSO): Situated in Missoula County, Montana, approximately 66 miles from Garrison, this airport provides both domestic and international flights, linking travelers to over 125 domestic cities and more than 10 international locations. Passengers have the option to elevate their travel experience by selecting first class, premium economy, or business class seating based on the airline and route. Major carriers such as United, Alaska Airlines, and Delta operate here.
• Helena Regional Airport (HLN): Located in Lewis and Clark County, Montana, about 40 miles from Garrison, this airport offers both domestic and international services, connecting to around 55 domestic cities and 3 international destinations. Travelers can enhance their journey by opting for first class, business class, or premium economy seating, depending on the route and airline. Key airlines operating from this airport include United, Delta, and Alaska Airlines.
• Bert Mooney Airport (BTM): Found in Silver Bow County, Montana, roughly 42 miles from Garrison, this airport focuses on domestic flights, connecting to over 10 cities nationwide. Passengers can choose to upgrade to premium economy seating for additional comfort, depending on their selected routes and airlines. Delta and United are the prominent airlines serving this airport.

Top routes to Garrison

• Denver (DEN) to Garrison (HLN/MSO/BTM), with one-way airfare from around $90
• Seattle (SEA) to Garrison (HLN/MSO/BTM), with one-way tickets available from around $75
• Phoenix (PHX) to Garrison (HLN/MSO/BTM), with one-way flights starting at around $120
• Los Angeles (LAX) to Garrison (HLN/MSO), with one-way tickets available from around $110
• Portland (PWM/PDX) to Garrison (HLN/MSO/BTM), with one-way flight options from around $90

Cheapest routes to Garrison

• Seattle (SEA) to Garrison (HLN/MSO/BTM), with low one-way fares from around $75
• Denver (DEN) to Garrison (HLN/MSO/BTM), with budget one-way fares from around $90
• Portland (PWM/PDX) to Garrison (HLN/MSO/BTM), with budget one-way fares from around $90
• Grand Junction (GJT) to Garrison (MSO), with affordable one-way prices from around $95
• Minneapolis (MSP) to Garrison (HLN/MSO/BTM), with low one-way fares from around $95

*Flight times and fares vary by season and availability and are based on one-way routes

Top airlines with flights to Garrison

• United: Offering flights to Helena Regional Airport (HLN), Missoula International Airport (MSO), and Bert Mooney Airport (BTM), United makes up about 38% of Garrison's arrivals. The typical one-way fare is around $290, with premium service options potentially including first class depending on the route.
• Delta: Providing service to Helena Regional Airport (HLN), Missoula International Airport (MSO), and Bert Mooney Airport (BTM), Delta accounts for approximately 25% of Garrison's arrivals. Average one-way fares hover around $270, with premium service options that may feature both premium economy and first class based on the route.
• Alaska Airlines: Serving Helena Regional Airport (HLN) and Missoula International Airport (MSO), Alaska Airlines contributes roughly 23% of arrivals to Garrison. The average one-way fare is about $250, with premium cabin choices potentially including business and first class, depending on the route.
• American Airlines: Operating flights to Missoula International Airport (MSO), American Airlines represents about 12% of arrivals to Garrison. The average one-way fare is roughly $270, with first-class service available as a premium option based on the route.
• Frontier Airlines: Flying to Missoula International Airport (MSO), Frontier Airlines accounts for approximately 1% of arrivals to Garrison. The average fare for a one-way ticket is around $160, positioning it as a budget-friendly choice for travelers.

Best time to fly to Garrison

The most popular months for travelers to fly to Garrison are March, June, and July, when peak temperatures in Garrison can reach up to 63°F in July. If you prefer quieter travel, consider October, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 38.5°F. For better deals, August usually offers the lowest average one-way fare around $246, roughly 9% cheaper than the yearly average. Looking for additional cheaper months to fly? September, January, and October offer average one-way fares roughly ranging from $250 to $266, making them good options for flexible travelers.

*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 Garrison

Getting some of the best deals on flights to Garrison 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 to receive notifications when flight prices change.
3. Bundle and save—book a flight and unlock a hotel deal on Expedia.*
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 Garrison flight with Expedia. Just select your frequent flyer program and enter your program number when confirming your booking.

*For members. Select hotels.

Arriving in Garrison

Garrison welcomes travelers through its range of transport options based on price, convenience, and proximity. Here's how to reach Garrison efficiently:

• Public transportation: From Bert Mooney Airport, the nearest key point is Southwest Montana Seaport, located about 7.7 miles from the airport, providing convenient access to maritime activities.
• Hotel transfer: Transfers offer a convenient way to reach your hotel in Garrison, with private rides that can be arranged in advance.
• Car rental: Renting a car in Garrison is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in Garrison 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 around Garrison

• Deer Lodge: Located 10 miles drive away from Garrison, Deer Lodge offers a charming blend of outdoor activities and historical attractions. Visitors can enjoy serene landscapes, romantic getaways, and various recreational opportunities. Key highlights include the Old Montana Prison Museum for a dose of local history, Lost Creek State Park for breathtaking scenery and adventure, and Jaycee Park, perfect for family outings and eco-friendly fun. Whether you seek relaxation or exploration, Deer Lodge has something to offer for every traveler.
• Goldcreek: Goldcreek is located 7 miles away from Garrison, making it an easily accessible destination for those craving outdoor adventures. Known for its stunning scenery and hiking trails, this small city is ideal for nature enthusiasts. Key points of interest include Little Joe E70 Park for family-friendly activities, Jaycee Park, which offers eco-friendly experiences, and the local William K Kohrs Memorial Library for a touch of culture. Goldcreek is perfect for those looking to immerse themselves in the great outdoors.
• Avon: Situated 12 miles away from Garrison, Avon is a picturesque spot known for its romantic settings and outdoor activities. This charming city features beautiful trails and river views, making it a great choice for travelers looking to connect with nature. Notable attractions include the Old Montana Prison Museum, where history comes alive, the scenic Blackfoot River for outdoor enthusiasts, and Jaycee Park, ideal for families and eco-conscious visitors. Avon provides a peaceful retreat for those seeking adventure and relaxation alike.

Tips for short-haul flights to Garrison

For quick getaways, efficiency is key. Here is how to make your short-haul journey smoother:

• Pack light and skip checked bags—with budget airlines, traveling with just a carry-on is often more economical. Maximize space by using travel-sized toiletries, wearing your heaviest clothing, and coordinating outfits effectively. This strategy also helps you avoid the wait at baggage claim upon arrival.
• Bring your own entertainment—many short-haul flights may lack in-flight entertainment options. To keep yourself occupied, download TV shows, movies, music, or podcasts ahead of time, and consider bringing a book. Be sure to fully charge your devices 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 prior to departure, taking into account traffic and security lines.
• Bring your own snacks and water—pack some snacks and a refillable water bottle to stay hydrated and save money while at the airport.

Tips for long-haul flights to Garrison

Flying long-haul sometimes requires extra planning to ensure a comfortable journey:

• Select your seat in advance—for long flights, choosing your seat is crucial for ensuring comfort. Full-service airlines often allow you to select your seat for free once online check-in begins, typically 24–48 hours before your flight. Some airlines may permit seat selection 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 procedures.
• Relax at the airport—if you have some extra time, take the opportunity to explore the shops, grab a coffee, or unwind at the gate or in a departure lounge if you have access. Airport Wi-Fi is generally free and readily available.
• Adjust to the new time zone mid-flight—begin syncing your body clock by changing your watch and adjusting 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 destination to help minimize jet lag.

Tips to find the cheapest flights to Garrison

The cheapest day to fly

Get started finding a cheap flight to Garrison 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 Garrison. 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 Garrison. 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 Garrison, 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 Garrison

The lowest price for round-trip flights to Garrison in 2026 starts from $279, while one-way tickets start from from $145. 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 Garrison. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to Garrison

Alaska Airlines, Delta, United are just some of the airlines that can typically offer cheap tickets to Garrison. 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 Garrison and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for Garrison, 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 Garrison. 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, you could save hundreds of dollars by booking your Garrison 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 Garrison

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 Garrison.

Stopover savings

The cheapest tickets to Garrison are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to Garrison. 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 Garrison 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 Garrison. Simply download the free Expedia app to your smart device and activate Garrison 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 Garrison. 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.