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$188 Cheap Flights from Appleton (ATW) to St. Louis (STL)

View $188 flight on Sat, Sep 5, 2026Opens in a new window

Popular airlines from Appleton, WI (ATW-Appleton Intl.) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Appleton to St. Louis (ATW-STL)

Prices were available within the past 7 days and start at $188 for one-way flights and $299 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Nov 20 - Sun, Nov 22
ATW
Appleton
STL
St. Louis
$299 Roundtrip, found 18 hours ago
$299
Roundtrip
found 18 hours ago
Select Delta flight, departing Fri, Nov 20 from Appleton to St. Louis, returning Sun, Nov 22, priced at $299 found 18 hours ago
United
Fri, Nov 20 - Sun, Nov 22
ATW
Appleton
STL
St. Louis
$299 Roundtrip, found 18 hours ago
$299
Roundtrip
found 18 hours ago
Select United flight, departing Fri, Nov 20 from Appleton to St. Louis, returning Sun, Nov 22, priced at $299 found 18 hours ago
United
Fri, Aug 14 - Fri, Aug 21
ATW
Appleton
STL
St. Louis
$314 Roundtrip, found 1 day ago
$314
Roundtrip
found 1 day ago
Select United flight, departing Fri, Aug 14 from Appleton to St. Louis, returning Fri, Aug 21, priced at $314 found 1 day ago
American Airlines
Fri, Oct 30 - Sun, Nov 1
ATW
Appleton
STL
St. Louis
$319 Roundtrip, found 6 hours ago
$319
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Fri, Oct 30 from Appleton to St. Louis, returning Sun, Nov 1, priced at $319 found 6 hours ago
United
Wed, Dec 2 - Sun, Dec 6
ATW
Appleton
STL
St. Louis
$323 Roundtrip, found 14 hours ago
$323
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Dec 2 from Appleton to St. Louis, returning Sun, Dec 6, priced at $323 found 14 hours ago
United
Fri, Aug 14 - Fri, Aug 21
ATW
Appleton
STL
St. Louis
$325 Roundtrip, found 1 day ago
$325
Roundtrip
found 1 day ago
Select United flight, departing Fri, Aug 14 from Appleton to St. Louis, returning Fri, Aug 21, priced at $325 found 1 day ago
Delta
Thu, Dec 3 - Sun, Dec 6
ATW
Appleton
STL
St. Louis
$329 Roundtrip, found 14 hours ago
$329
Roundtrip
found 14 hours ago
Select Delta flight, departing Thu, Dec 3 from Appleton to St. Louis, returning Sun, Dec 6, priced at $329 found 14 hours ago
United
Fri, Nov 20 - Sun, Nov 22
ATW
Appleton
STL
St. Louis
$330 Roundtrip, found 18 hours ago
$330
Roundtrip
found 18 hours ago
Select United flight, departing Fri, Nov 20 from Appleton to St. Louis, returning Sun, Nov 22, priced at $330 found 18 hours ago
United
Fri, Aug 14 - Fri, Aug 21
ATW
Appleton
STL
St. Louis
$333 Roundtrip, found 1 day ago
$333
Roundtrip
found 1 day ago
Select United flight, departing Fri, Aug 14 from Appleton to St. Louis, returning Fri, Aug 21, priced at $333 found 1 day ago
United
Fri, Aug 14 - Fri, Aug 21
ATW
Appleton
STL
St. Louis
$339 Roundtrip, found 1 day ago
$339
Roundtrip
found 1 day ago
Select United flight, departing Fri, Aug 14 from Appleton to St. Louis, returning Fri, Aug 21, priced at $339 found 1 day ago

What you need to know for your flight from Appleton Intl. to Lambert-St. Louis Intl.

Appleton (ATW) to St. Louis (STL) at a glance

Travel with a selection of airlines offering routes from Appleton (ATW) to St. Louis (STL) on this domestic short-haul journey. Evaluate choices from full-service carriers to discover the itinerary that aligns with your budget, schedule, and travel aspirations as you delve into the iconic attractions and vibrant neighborhoods of St. Louis. Access essential information for flights departing from Appleton International Airport (ATW) to Lambert-St. Louis International Airport (STL).

  • Fastest flight duration: around 2h 45m in-flight, plus roughly 1h 15m layover with one stop
  • Route distance: roughly 400 miles (645 km)
  • Flights per week: around 7 departures on average
  • Typical fares (one-way): economy tickets often range from $105–$400, depending on seasonality and how far ahead you book

Flights from Appleton International Airport (ATW) to Lambert-St. Louis International Airport (STL)

According to recent traveler bookings, the top airlines flying from Appleton to St. Louis are favored for their one-stop services. Common layover points include O'Hare International Airport (ORD) with a layover of about 1 hour and 15 minutes, Minneapolis - St. Paul International Airport (MSP) at approximately 1 hour and 30 minutes, and Detroit Metropolitan Wayne County Airport (DTW), also around 1 hour and 15 minutes. These options allow you to easily compare prices, total travel times, and cabin classes to find the ideal itinerary for your trip.

  • Delta: As a major player in the market, Delta provides full-service, one-stop flights with one-way ticket prices usually falling between $110 and $495. This airline represents about 36% of departures for this route, featuring a flight duration of 2 hours and 45 minutes and an overall travel time of approximately 4 hours and 15 minutes, including layover time.
  • American Airlines: Another robust option, American Airlines also offers full-service, one-stop journeys with one-way fares generally ranging from $105 to $350. It makes up around 35% of the departures on this route, with a flight time of 2 hours and 45 minutes and a total journey length of about 4 hours and 15 minutes, factoring in the layover.
  • United: United Airlines, providing full-service, one-stop flights, typically has one-way fares between $125 and $420. This carrier accounts for roughly 28% of the flights on this route, with an in-flight duration of 2 hours and 45 minutes and an overall travel time of close to 4 hours and 15 minutes, including layover.

Alternative route from Appleton (ATW) to St. Louis (STL)

  • Green Bay to St. Louis (GRB-STL): Austin Straubel International Airport (GRB) is located approximately 25 miles from Appleton International Airport (ATW). One-way economy fares on this route generally fall between $115 and $405, influenced by the season and how far in advance you book. This route is predominantly served by one-stop flights, with common layover points at O'Hare International Airport (ORD) and Minneapolis - St. Paul International Airport (MSP). Major airlines operating on this route include American Airlines and United, and first class service is also offered.

How to find the best prices for flights from Appleton (ATW) to St. Louis (STL)

Getting some of the best deals on flights from Appleton to St. Louis is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are typically found when booking 2 to 8 weeks in advance, which coincides with when most travelers make their reservations. Departures in the morning, from 5 a.m. to 12 p.m., often offer lower prices and are also the most popular flight times. Additionally, flying on Friday generally provides cheaper rates, although Thursday remains the most popular travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. 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.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. 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 allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Lambert-St. Louis International Airport from Appleton International Airport

St. Louis welcomes travelers from Appleton with a range of transport options based on price, convenience, and proximity. Here's how to reach St. Louis efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in St. Louis, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Lambert-St. Louis International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Lambert-St. Louis International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Lambert-St. Louis International Airport, Lambert Main Terminal Station, a metro station, is conveniently located just 0.1 miles away on foot, providing easy access to public transport for travelers.

Frequently asked questions

How much does a flight from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
You can find cheap one-way flights from $188 and cheap return flights from $299 Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) with Expedia. One-way flights usually range from $170 to $590, and return flights typically cost between $326 and $980. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
May is the cheapest month to fly from Appleton, WI (ATW) to St. Louis, MO (STL), with average round-trip fares around $270. This is about 25% lower than the average price throughout the year, as May typically sees less travel demand. Other affordable months to consider are January and April.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Enter ATW to STL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
United is one of the cheapest airlines offering connecting flights from Appleton, WI (ATW) to St. Louis, MO (STL), with round-trip tickets starting from around $248 with a layover in O'Hare Intl. (ORD). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
For flights from Appleton (ATW) to St. Louis (STL), the best months to fly are April and May, with average return fares around $270. These months are popular for travel, offering a balance of good prices and pleasant weather for your trip.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from ATW to STL. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The most popular departure times for flights from Appleton, WI (ATW) to St. Louis, MO (STL) are in the early morning, from 6am to 9am. About 44% of passengers prefer this time window. Many major carriers, including American Airlines and United Airlines, offer flights during this window. This timing works well because it allows you to arrive in St. Louis with a full day ahead of you.
How long does it take to fly from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Flights from ATW to STL with one stop typically take around 6 hours 20 minutes, covering approximately 393 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
First class seats are offered on the ATW to STL route. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

How do I earn miles on a Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for St. Louis from Appleton Intl. (ATW)?
If you're planning to travel to St. Louis from Appleton Intl. (ATW), you can fly into Lambert-St. Louis Intl. (STL) Some flights may connect through major hubs like O'Hare Intl. (ORD), Charlotte-Douglas Intl. (CLT), Detroit Metropolitan Wayne County (DTW) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) St Louis Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Appleton Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$298
Distance
393 mi

Book with confidence

Appleton to St. Louis Flights

The cheapest times to fly from Appleton to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Appleton to St. Louis are during the month of November. You can find some of the cheapest flights from Appleton to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Appleton to St. Louis

Sunday is one of the best days to book for cheap flights from Appleton to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Appleton to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Appleton to St. Louis in 2026. You can also book with separate airlines for your outbound and return journeys, from $188 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Appleton to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Appleton to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Appleton to St. Louis Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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