$100 Cheap Flights from St. Louis (STL) to Appleton (ATW)

View $100 flight on Thu, Dec 25, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $100 for one-way flights and $214 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Dec 25 - Sat, Dec 27
STL
St. Louis
ATW
Appleton
$214 Roundtrip, found 20 hours ago
$214
Roundtrip
found 20 hours ago
Select Delta flight, departing Thu, Dec 25 from St. Louis to Appleton, returning Sat, Dec 27, priced at $214 found 20 hours ago
Delta
Sun, Nov 23 - Thu, Nov 27
STL
St. Louis
ATW
Appleton
$229 Roundtrip, found 1 day ago
$229
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Nov 23 from St. Louis to Appleton, returning Thu, Nov 27, priced at $229 found 1 day ago
United
Wed, Oct 8 - Wed, Oct 15
STL
St. Louis
ATW
Appleton
$234 Roundtrip, found 8 hours ago
$234
Roundtrip
found 8 hours ago
Select United flight, departing Wed, Oct 8 from St. Louis to Appleton, returning Wed, Oct 15, priced at $234 found 8 hours ago
Delta
Mon, Nov 24 - Wed, Dec 10
STL
St. Louis
ATW
Appleton
$240 Roundtrip, found 5 days ago
$240
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Nov 24 from St. Louis to Appleton, returning Wed, Dec 10, priced at $240 found 5 days ago
United
Fri, Mar 27 - Sun, Apr 5
STL
St. Louis
ATW
Appleton
$243 Roundtrip, found 6 days ago
$243
Roundtrip
found 6 days ago
Select United flight, departing Fri, Mar 27 from St. Louis to Appleton, returning Sun, Apr 5, priced at $243 found 6 days ago
Delta
Tue, Oct 7 - Wed, Oct 22
STL
St. Louis
ATW
Appleton
$245 Roundtrip, found 5 days ago
$245
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Oct 7 from St. Louis to Appleton, returning Wed, Oct 22, priced at $245 found 5 days ago
Delta
Fri, Nov 28 - Thu, Dec 11
STL
St. Louis
ATW
Appleton
$249 Roundtrip, found 2 days ago
$249
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Nov 28 from St. Louis to Appleton, returning Thu, Dec 11, priced at $249 found 2 days ago
United
Fri, Mar 27 - Sun, Apr 5
STL
St. Louis
ATW
Appleton
$257 Roundtrip, found 6 days ago
$257
Roundtrip
found 6 days ago
Select United flight, departing Fri, Mar 27 from St. Louis to Appleton, returning Sun, Apr 5, priced at $257 found 6 days ago
United
Sat, Nov 22 - Mon, Nov 24
STL
St. Louis
ATW
Appleton
$259 Roundtrip, found 5 days ago
$259
Roundtrip
found 5 days ago
Select United flight, departing Sat, Nov 22 from St. Louis to Appleton, returning Mon, Nov 24, priced at $259 found 5 days ago
American Airlines
Wed, Dec 24 - Thu, Dec 25
STL
St. Louis
ATW
Appleton
$264 Roundtrip, found 20 hours ago
$264
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Wed, Dec 24 from St. Louis to Appleton, returning Thu, Dec 25, priced at $264 found 20 hours ago

Find the cheapest month to fly from St. Louis (STL) to Appleton (ATW)

May is typically the cheapest month to fly

From $198 - $446 per traveler.

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Appleton Intl. Airport (ATW) cost?
Get a cheap one-way flight from $100 or cheap return flight from $214 from Lambert-St. Louis Intl. Airport (STL) to Appleton Intl. Airport (ATW) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Appleton Intl. Airport (ATW)?
December is the cheapest month to fly from STL to ATW. Traveling during an off-peak travel window is often the key to better flight prices.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Appleton Intl. Airport (ATW)?
To find the cheapest airline that'll fly you from STL to ATW, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Appleton Intl. Airport (ATW)?
Direct flights from Lambert-St. Louis Intl. Airport (STL) to Appleton Intl. Airport (ATW) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to ATW?
Typically you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Appleton Intl. Airport (ATW)?
To avoid possible delays on the Lambert-St. Louis Intl. Airport (STL) to Appleton Intl. Airport (ATW) route, aim to fly before 3 PM. Flights after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Appleton Intl. Airport (ATW) last-minute?
Booking your plane ticket from STL to ATW shortly before your getaway is typically more expensive. But if there's some wiggle room with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book a STL to ATW flight and hotel package?
You'll typically save money by booking a STL to ATW flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. Once you've chosen your ideal accommodations and flights, you can add extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Appleton Intl. Airport (ATW)?
If you booked your STL to ATW flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you'd like more information.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Appleton Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$213
Distance
393 mi

Book with confidence

Book with confidence

St. Louis to Appleton Flights

The cheapest times to fly from St. Louis to Appleton

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 St. Louis to Appleton are during the month of December. You can find some of the cheapest flights from St. Louis to Appleton with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Appleton: 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 St. Louis to Appleton

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 St. Louis to Appleton in 2025. You can also book with separate airlines for your outbound and return journeys, from $100 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 St. Louis to Appleton 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 St. Louis to Appleton 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.

 

St. Louis to Appleton Flights

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Explore a world of travel with Expedia

*Available to One Key members.