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$42 Cheap Flights to Arnold, MO

View $42 flight on Fri, Nov 13, 2026Opens in a new window

Popular airlines to Arnold

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How much is the cheapest flight to Arnold?

Prices were available within the past 7 days and start at $42 for one-way flights and $78 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Allegiant Air
Frontier Airlines
Southwest Airlines
United
American Airlines

Alternative airports near Arnold

Prices were available within the past 7 days. Prices and availability are subject to change.

Find the cheapest month to fly from Columbus (CMH) to St. Louis (STL)

From $148 - $387 per traveler.

What you need to know for your flight to Arnold

Flights to Arnold at a glance

Traveling to Arnold, Missouri is easy with a variety of flight options available. You can choose between full-service airlines and budget-friendly choices. Compare journey times to find the best flights to Arnold that fit your budget and itinerary, allowing you to experience the city's renowned attractions and neighborhoods.

  • Major airport near Arnold: Lambert-St. Louis International Airport (STL)
  • Flights per week: 3,150+ flights arriving at Arnold airport
  • Number of airlines that fly to Arnold: around 40+ carriers

Popular airport near Arnold

Arnold is a welcoming city ideal for family getaways, outdoor adventures, and urban exploration. Visitors are drawn to its rich culture, sports activities, and vibrant city life. The nearest major airport conveniently connects travelers to Arnold, making it easy to start your journey in this charming destination.

  • Lambert-St. Louis International Airport (STL): Situated in St. Louis County, Missouri, approximately 21 miles from Arnold, this airport caters to both domestic and international travelers, offering connections to around 210 domestic cities and 110 international destinations. Passengers can enhance their travel experience by opting for first class, premium economy, or business class seating, depending on the airline and route. Key airlines operating from this airport include Southwest Airlines, American Airlines, and Delta.

Top routes to Arnold

  • New York (JFK/LGA) to Arnold (STL), with one-way fares starting at around $90
  • Las Vegas (LAS) to Arnold (STL), with one-way flight options from around $60
  • Orlando (MCO) to Arnold (STL), with one-way fares starting at around $45
  • Denver (DEN) to Arnold (STL), with one-way fares starting at around $45
  • Los Angeles (LAX) to Arnold (STL), with one-way tickets available from around $120

Cheapest routes to Arnold

  • Chicago (ORD/MDW) to Arnold (STL), with low one-way fares from around $40
  • Kansas City (MCI) to Arnold (STL), with cheap one-way fares from around $40
  • Quincy (UIN) to Arnold (STL), with cheap one-way fares from around $40
  • Orlando (MCO) to Arnold (STL), with affordable one-way prices from around $45
  • Denver (DEN) to Arnold (STL), with cheap one-way fares from around $45

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

Top airlines with flights to Arnold

  • American Airlines: Operates flights to Lambert-St. Louis International Airport (STL), representing about 28% of arrivals to Arnold. The average one-way fare is roughly $330, with options for premium cabins that may include first class, depending on the route.
  • Southwest Airlines: Services Lambert-St. Louis International Airport (STL), contributing to around 27% of arrivals in Arnold. Travelers can expect an average one-way fare of about $240.
  • Delta: Flies into Lambert-St. Louis International Airport (STL), accounting for approximately 20% of arrivals to Arnold. The average one-way fare is around $290, and premium cabin services may feature premium economy and first class based on the route.
  • United: Connects to Lambert-St. Louis International Airport (STL), making up roughly 15% of arrivals to Arnold. The average one-way fare is about $320, with potential premium cabin options including first class, depending on the flight.
  • Frontier Airlines: Serves Lambert-St. Louis International Airport (STL), providing about 5% of the arrivals to Arnold. It is a budget-friendly choice, with average one-way fares around $150.

Best time to fly to Arnold

The most popular months for travelers to fly to Arnold are January, March, and April, when peak temperatures in Arnold can reach up to 56.1°F in April. If you prefer quieter travel, consider September, the least busy time to visit with temperatures around 70.7°F and typically the lowest average one-way fare (around $222), roughly 9% cheaper than the yearly average. Looking for additional cheaper months to fly? October, May, and August offer average one-way fares of around $230, making them good options for flexible travelers.

calendar iconMonthtemperature iconTemperaturerain iconPrecipitationmostly cloudy iconCloudinesscrowd level iconDemandprice iconAverage one-way Fare
January31.8°F (-0.1°C)Light RainMostly CloudyModerately High$277
February34.9°F (1.6°C)Light RainMostly SunnyAverage$245
March46.4°F (8.0°C)Light RainMostly SunnyModerately High$273
April56.1°F (13.4°C)Light RainMostly SunnyModerately High$249
May66.4°F (19.1°C)Light RainMostly SunnyAverage$229
June75.9°F (24.4°C)Light RainMostly SunnyAverage$258
July78.8°F (26.0°C)Light RainMostly SunnyAverage$251
August77.0°F (25.0°C)Light RainMostly SunnyAverage$235
September70.7°F (21.5°C)Light RainMostly SunnyModerately Low$222
October58.6°F (14.8°C)Light RainMostly SunnyAverage$225
November46.2°F (7.9°C)Light RainMostly SunnyModerately Low$243
December37.8°F (3.2°C)Light RainMostly SunnyModerately Low$249

*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 Arnold

Getting some of the best deals on flights to Arnold 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*, or explore our Arnold hotel and flight deals.
  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 Arnold flight with Expedia. Just select your frequent flyer program and enter your program number when confirming your booking.

*For members. Select hotels.

Arriving in Arnold

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

  • Public transportation: From Lambert-St. Louis International Airport, Lambert Main Terminal Station, a metro station, is located just 0.1 miles from the airport, making it easily accessible for travelers.
  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Arnold, with private rides that can be arranged in advance.
  • Car rental: Renting a car in Arnold is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in Arnold 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 Arnold

  • Imperial: Located 4 miles away from Arnold, Imperial is a charming city that beckons travelers seeking outdoor adventures and family-friendly activities. Visitors can enjoy fun-filled days at the local amusement park or embark on thrilling escapades at the arcade adventure zone. Nature enthusiasts will appreciate the nearby national state park and historic sites. Key highlights include the Magic House - St. Louis Children's Museum, perfect for cultural family outings, and the Mastodon State Historic Site, an intriguing glimpse into history. Don’t miss the Kimmswick Historical Society Museum for an enriching cultural experience.
  • Fenton: Fenton is located 7 miles away from Arnold and offers a vibrant mix of family-oriented and adventurous experiences. This lively city is home to an array of attractions, including an exciting amusement park and a bustling shopping mall center. Outdoor lovers can unwind at the urban parks or catch a game at the local sports facility. Notable spots to explore include Forest Park, an excellent destination for family outings, and Washington University in St. Louis, which showcases modern architectural beauty. The Magic House - St. Louis Children's Museum also makes Fenton an appealing stop for families.
  • High Ridge: Situated 9 miles away from Arnold, High Ridge is a delightful city perfect for those in search of outdoor adventures and family fun. Enjoy thrilling experiences at the local amusement park or ski activities during the winter months. The area boasts beautiful landscapes with attractions like Route 66 State Park, ideal for scenic outdoor excursions. Families can relax at the High Ridge Civic Center & Park, offering various recreational facilities. Don’t forget to visit Six Flags St. Louis for a day of exhilarating rides and entertainment amidst the stunning backdrop of the region.

Tips for short-haul flights to Arnold

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 the more economical choice. Maximize your space by using travel-sized toiletries, wearing your heaviest clothing, and coordinating your outfits. This strategy also saves you from waiting 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. Remember to charge your devices fully before you board.
  • Arrive at the airport in plenty of time—even for short or domestic flights, aim to get to the airport at least 1.5 to 2 hours before your departure, taking into account traffic and potential 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 Arnold

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

  • Select your seat in advance—for longer flights, choosing your seat is essential for comfort. Full-service airlines often allow free seat selection once online check-in begins, typically 24–48 hours before your flight. Some airlines may provide the option to select seats even earlier.
  • Arrive at the airport in plenty of time—make sure to arrive at the airport at least 3 hours prior to departure for international flights, allowing sufficient time for check-in, security, and immigration procedures.
  • Relax at the airport—if you find yourself with extra time, take the opportunity to browse the shops, grab a coffee, or unwind at the gate or in a departure lounge if you have access. Most airports offer free Wi-Fi for your convenience.
  • 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. Aim to sleep or stay awake during the flight according to the local time at your arrival location to help minimize jet lag.

Frequently asked questions

What month is the cheapest to fly to Arnold?
September is the cheapest month to fly to Arnold. There's less demand then, so you're likely to get a good deal. Booking your trip outside of public and school holidays can also help you save.
Which US cities have the cheapest flights to Arnold?
Generally, Chicago, Dallas and Denver offer cheap flights to Arnold. Flexibility, however, is always key to landing the best fares. Plan your getaway during the off-peak season or midweek to keep costs down.
Which US cities fly direct to Arnold?
There are 55 US cities you're able to fly to Arnold directly from. Explore your options by selecting the "Direct flights only" filter on Expedia and pick the ideal departure point for your trip. Here are several of the major cities to head out from:
  • Chicago
  • Dallas
  • Denver
  • New York
  • Atlanta
How to find a cheap flight to Arnold?
Book in advance to increase your chances of finding cheap flights to Arnold. Also, consider visiting during off-peak months like January and February. If you leave on a Thursday, you can save an average of 16% compared to those departing on a Sunday.* Save time checking every day and set up a price alert on the Expedia app. We'll notify you 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 Arnold?
Staying flexible about your plans can help you to find last-minute offers on cheap flights to Arnold. To see all the available options, try looking at different ticket types, changing your Arnold vacation dates, jetting out of an alternative airport or going with another airline.
How far in advance should I book a flight to Arnold?
Find the departure dates you want and a price that's easy on your pocket by booking your domestic flight to Arnold up to 28 days in advance. Lock in tickets between two and four months ahead if you're flying to Arnold 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 Arnold?
You can save an average of 8% if you buy tickets on a Sunday rather than Fridays, which tend to be the most expensive day to book.* When it comes to snapping up a cheap flight to Arnold, timing makes a difference.*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 Arnold?
Arnold is accessible from 33 airports worldwide through 10 airlines, with Lambert-St. Louis Intl. Airport (STL) as its primary entry point. Consider these major airlines to Arnold when planning your trip:
  • Delta Air Lines
  • American Airlines
  • United Airlines
  • Southern Airways Express
Where do you fly into Arnold?
If you're flying to Arnold, the main airport to disembark at is Lambert-St. Louis Intl. Airport (STL). Alternatively, you could fly to Arnold via St. Louis Downtown Airport (CPS).
How far is the airport from central Arnold?
You'll be approximately 20 mi north of central Arnold after landing at Lambert-St. Louis Intl. Airport (STL).
Can I save money by booking an Arnold trip package?
It's possible to save hundreds of dollars if you choose an Arnold flight and hotel package deal on Expedia. And you'll save time and hassle by having all your travel arrangements in the same place. Try bundling flights and hotels with extras such as activities and car rentals for your own personalized Arnold escape.
Can I change or cancel my flight to Arnold?
It's usually possible to cancel or change your flight to Arnold. Many airlines let you cancel your flight for free within 24 hours of making your booking. However, some flights are non-refundable, and airlines may issue you credit for a future flight instead of a direct refund. To secure affordable flights to Arnold with flexible change policies, pick the "Changes included" or "No cancel fee" filters when you search. Need more information? Visit our Customer Service Portal.

*Flight schedules are subject to change.

*Available to One Key members.

Book with confidence

Tips to find the cheapest flights to Arnold

The cheapest day to fly

Get started finding a cheap flight to Arnold 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

September is the cheapest month to fly to Arnold. 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 Arnold. 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 Arnold, 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 Arnold

The lowest price for round-trip flights to Arnold in 2026 starts from from $78, while one-way tickets start from from $42. 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 Arnold. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to Arnold

Allegiant Air, Frontier Airlines, Southwest Airlines, American Airlines, Delta, United are just some of the airlines that can typically offer cheap tickets to Arnold. 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 Arnold and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for Arnold, 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 Arnold. 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 Arnold 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 Arnold

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 Arnold.

Stopover savings

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

Tips to find the cheapest flights to Arnold

Travel information

Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
$86

Trending flights to Arnold

Prices were available within the past 7 days and start at $42 for one-way flights and $78 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines

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