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$229+ Cheap flights from Appleton to St. Louis (ATW - STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
ATW — STL
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from Appleton to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Appleton (ATW) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2025.

Round-trip from

$229
(American Airlines)

Popular in

June

Cheapest in

July

Average price

$264
From Appleton Intl to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($3 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
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Find flight deals from Appleton to St. Louis

Cheapest flights from Appleton to St. Louis
Explore the most affordable flight options available from Appleton to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This American Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/223:25 pmATW - STL
1 stop7h 40mAmerican Airlines
Mon 8/258:43 amSTL - ATW
1 stop6h 09mAmerican Airlines
Deal found 7/28$229
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/317:00 amATW - STL
1 stop6h 21mDelta
Tue 8/55:37 pmSTL - ATW
1 stop3h 54mDelta
Deal found 7/28$279
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/315:21 pmATW - STL
1 stop5h 24mUnited Airlines
Mon 11/35:24 pmSTL - ATW
1 stop4h 09mUnited Airlines
Deal found 7/28$323
This Mytrip deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/188:00 amATW - STL
2 stops27h 27mMultiple Airlines
Sun 9/217:34 amSTL - ATW
2 stops13h 27mMultiple Airlines
Deal found 7/28$798

Cheapflights Fare Finder

 
Customize your flight search to find flights from Appleton to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
Use the filters below to find and compare flights from Appleton to St. Louis that are best for you.

Fly from

Appleton

Fly to

St. Louis

Route

Depart

Return

Price

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Fri 8/22

3:25 pm-11:05 pm

1 stop7h 40m

Lambert-St Louis

Mon 8/25

8:43 am-2:52 pm

1 stop6h 09m

$229

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Fri 8/1

2:43 pm-7:31 pm

1 stop4h 48m

Lambert-St Louis

Tue 8/5

5:31 pm-9:35 pm

1 stop4h 04m

$339

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Thu 9/18

8:00 am-11:27 am

2 stops27h 27m

Lambert-St Louis

Sun 9/21

7:34 am-9:01 pm

2 stops13h 27m

$798

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Appleton to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Appleton with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Appleton to St. Louis

What is the cheapest month to book a flight from Appleton to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Appleton to St. Louis (average of $311). Flying from Appleton to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated July 29, 2025.
Read reviews from past customers who have flown United Airlines and American Airlines from Appleton to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,899 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,899 reviews
United Airlines
7.4
Good
8,899 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,899 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Appleton to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Appleton to St. Louis round-trip?

    According to our current data, American Airlines ($229), and United Airlines ($339) offers the cheapest pricing from Appleton to St. Louis. Users have found that American Airlines is 28% cheaper than the other options available to this destination.

  • Can I find deals for flights from Appleton to St. Louis that include hotel bookings?

    Yes. In addition to deals on Appleton to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Appleton to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Appleton to St. Louis.

  • Can I find deals for business class flights from Appleton to St. Louis?

    Yes. Cheapflights offers flight deals from Appleton to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Appleton to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Appleton to St. Louis (average of $311). Flying from Appleton to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Festus
Farmington

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Top 3 airlines flying from Appleton to St. Louis

Discover the top 3 airlines that operate flights from Appleton to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$198Average$272FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$218Average$300FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$228Average$378FlexibilityNo cancel feeOn-time69%

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