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St. Louis

$212+ Cheap flights from Appleton to St. Louis (ATW - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
ATW — STL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$229
(United Airlines)

One-way from

$212
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$370
From Appleton Intl to Lambert-St Louis
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One-way flight from Appleton Intl to Lambert-St Louis
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Highest demand for flights based on searches. 1% potential increase in price ($6 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).
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Average for round-trip flights in September 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 September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. 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 10/33:46 pmATW - STL
1 stop5h 51mUnited Airlines
Sat 10/411:10 amSTL - ATW
1 stop5h 39mUnited Airlines
Deal found 9/10$229
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/33:45 pmATW - STL
1 stop7h 22mAmerican Airlines
Sat 10/42:11 pmSTL - ATW
2 stops8h 14mAmerican Airlines
Deal found 9/10$234
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 9/256:19 pmATW - STL
1 stop5h 29mAmerican Airlines
Sun 10/56:05 amSTL - ATW
1 stop3h 01mAmerican Airlines
Deal found 9/10$249
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Thu 9/256:19 pmATW - STL
1 stop5h 29mAmerican Airlines
Sun 9/288:03 pmSTL - ATW
1 stop3h 34mAmerican Airlines
Deal found 9/9$254
This American Airlines deal was found by Cheapflights users on 9/11. 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 9/266:18 pmATW - STL
1 stop3h 35mAmerican Airlines
Tue 9/308:17 amSTL - ATW
2 stops9h 31mAmerican Airlines
Deal found 9/11$304
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 9/111:00 pmATW - STL
1 stop5h 23mUnited Airlines
Wed 9/1711:30 amSTL - ATW
1 stop3h 39mUnited Airlines
Deal found 9/10$339
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 9/114:46 pmATW - STL
1 stop3h 39mAmerican Airlines
Wed 9/178:17 amSTL - ATW
2 stops9h 31mAmerican Airlines
Deal found 9/10$344
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 9/111:00 pmATW - STL
1 stop5h 23mUnited Airlines
Tue 9/169:17 amSTL - ATW
1 stop5h 52mUnited Airlines
Deal found 9/10$349
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 9/114:46 pmATW - STL
1 stop3h 39mAmerican Airlines
Mon 9/152:11 pmSTL - ATW
2 stops9h 26mAmerican Airlines
Deal found 9/10$354
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 9/136:18 pmATW - STL
1 stop3h 35mAmerican Airlines
Wed 9/178:17 amSTL - ATW
1 stop6h 58mAmerican Airlines
Deal found 9/10$408
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 9/116:00 amATW - STL
2 stops9h 46mAmerican Airlines
Thu 9/186:05 amSTL - ATW
1 stop3h 01mAmerican Airlines
Deal found 9/10$419
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 9/139:37 amATW - STL
2 stops9h 04mAmerican Airlines
Thu 9/186:05 amSTL - ATW
1 stop3h 01mAmerican Airlines
Deal found 9/10$423

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 September 11, 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 10/3

3:46 pm-9:37 pm

1 stop5h 51m

Lambert-St Louis

Sat 10/4

11:10 am-4:49 pm

1 stop5h 39m

$229

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Thu 9/25

6:19 pm-11:48 pm

1 stop5h 29m

Lambert-St Louis

Sun 10/5

6:05 am-9:06 am

1 stop3h 01m

$249

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Thu 9/25

6:19 pm-11:48 pm

1 stop5h 29m

Lambert-St Louis

Sun 9/28

8:03 pm-11:37 pm

1 stop3h 34m

$254

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Fri 9/26

6:18 pm-9:53 pm

1 stop3h 35m

Lambert-St Louis

Tue 9/30

1:53 pm-5:48 pm

1 stop3h 55m

$254

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Wed 2/18

4:05 pm-11:10 pm

1 stop7h 05m

Lambert-St Louis

Sat 2/21

5:30 pm-9:39 pm

1 stop4h 09m

$296

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Wed 2/18

4:56 pm-9:44 pm

1 stop4h 48m

Lambert-St Louis

Sat 2/21

2:32 pm-9:27 pm

2 stops6h 55m

$362

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Fri 10/3

6:00 am-1:12 pm

2 stops7h 12m

Lambert-St Louis

Sat 10/4

2:11 pm-10:25 pm

2 stops8h 14m

$443

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Thu 9/25

3:20 pm-9:06 am

1 stop17h 46m

Lambert-St Louis

Sun 10/5

10:39 am-6:38 pm

2 stops31h 59m

$494

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Mon 11/3

4:15 pm-9:07 am

3 stops40h 52m

$212

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Mon 11/3

7:42 pm-11:56 pm

1 stop4h 14m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

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.

How much does it cost to fly round-trip from Appleton to St. Louis?

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 September 11, 2025.
Read reviews from past customers who have flown Delta, 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.
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • How long is the flight from Appleton to St. Louis?

    There are many flights that can get you from Appleton to St. Louis in 5h 29m. Fly via United Airlines, American Airlines, or Delta to get the fastest option. There are 392 mi between Appleton and St. Louis. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, Delta ($198), American Airlines ($218), and United Airlines ($228) offers the cheapest pricing from Appleton to St. Louis. Users have found that Delta is 37% 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
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Appleton to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$198Average$273FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$218Average$298FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$228Average$369FlexibilityNo cancel feeOn-time69%

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