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Cheap flights from Appleton to St. Louis from $289

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Appleton to St. Louis departing on 8/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Appleton to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:00 am - 10:23 am
ATW
-
STL
4h 23m
1 stop
Delta Logo
6:30 am - 10:29 am
STL
-
ATW
3h 59m
1 stop
$289Delta
Thu, Aug 20 - Sun, Aug 23
Delta Logo
11:09 am - 5:23 pm
ATW
-
STL
6h 14m
1 stop
Delta Logo
6:30 am - 1:27 pm
STL
-
ATW
6h 57m
1 stop
$304Delta
Mon, Jun 29 - Sun, Jul 5
Delta Logo
11:09 am - 5:23 pm
ATW
-
STL
6h 14m
1 stop
Delta Logo
6:30 am - 1:27 pm
STL
-
ATW
6h 57m
1 stop
$319Delta
Mon, Jun 29 - Sun, Jul 5
American Airlines Logo
7:15 pm - 12:16 am
ATW
-
STL
5h 01m
1 stop
American Airlines Logo
6:55 am - 10:45 am
STL
-
ATW
3h 50m
1 stop
$324American Airlines
Thu, Jul 23 - Mon, Jul 27
American Airlines Logo
6:28 pm - 12:16 am
ATW
-
STL
5h 48m
1 stop
American Airlines Logo
6:55 am - 10:45 am
STL
-
ATW
3h 50m
1 stop
$339American Airlines
Mon, Jun 29 - Sun, Jul 5
Delta Logo
11:10 am - 4:50 pm
ATW
-
STL
5h 40m
1 stop
Delta Logo
6:30 am - 11:27 am
STL
-
ATW
4h 57m
1 stop
$357Delta
Thu, Oct 22 - Sun, Oct 25
American Airlines Logo
7:15 pm - 12:16 am
ATW
-
STL
5h 01m
1 stop
American Airlines Logo
7:55 pm - 12:10 am
STL
-
ATW
4h 15m
1 stop
$359American Airlines
Fri, Jul 24 - Sun, Jul 26
American Airlines Logo
11:17 am - 9:37 pm
ATW
-
STL
10h 20m
2 stops
American Airlines Logo
5:58 pm - 12:10 am
STL
-
ATW
6h 12m
1 stop
$387American Airlines
Tue, Jun 30 - Tue, Jul 7
Multiple Airlines Logo
4:17 pm - 12:14 am
ATW
-
STL
7h 57m
1 stop
Multiple Airlines Logo
6:33 pm - 3:14 pm
STL
-
ATW
20h 41m
2 stops
$388Multiple Airlines
Thu, Aug 20 - Sun, Aug 23
United Airlines Logo
12:24 pm - 6:13 pm
ATW
-
STL
5h 49m
1 stop
United Airlines Logo
11:25 am - 4:54 pm
STL
-
ATW
5h 29m
1 stop
$389United Airlines
Fri, Jul 3 - Sat, Jul 4

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Delta flights from Appleton to St. Louis

Our best Delta deals on Appleton to St. Louis flight tickets
Delta
Aug 20
ATW6:00 amAppleton Intl
4h 23m
1 stop
STL10:23 amLambert-St Louis
Aug 23
STL6:30 amLambert-St Louis
3h 59m
1 stop
ATW10:29 amAppleton Intl
$289
Delta
Jun 29
ATW11:09 amAppleton Intl
6h 14m
1 stop
STL5:23 pmLambert-St Louis
Jul 5
STL6:30 amLambert-St Louis
6h 57m
1 stop
ATW1:27 pmAppleton Intl
$304
Delta
Jun 29
ATW11:09 amAppleton Intl
6h 14m
1 stop
STL5:23 pmLambert-St Louis
Jul 5
STL6:30 amLambert-St Louis
6h 57m
1 stop
ATW1:27 pmAppleton Intl
$319

American Airlines flights from Appleton to St. Louis

Our best American Airlines deals on Appleton to St. Louis flight tickets
American Airlines
Jul 23
ATW7:15 pmAppleton Intl
5h 01m
1 stop
STL12:16 amLambert-St Louis
Jul 27
STL6:55 amLambert-St Louis
3h 50m
1 stop
ATW10:45 amAppleton Intl
$324
American Airlines
Jun 29
ATW6:28 pmAppleton Intl
5h 48m
1 stop
STL12:16 amLambert-St Louis
Jul 5
STL6:55 amLambert-St Louis
3h 50m
1 stop
ATW10:45 amAppleton Intl
$339
American Airlines
Jul 24
ATW7:15 pmAppleton Intl
5h 01m
1 stop
STL12:16 amLambert-St Louis
Jul 26
STL7:55 pmLambert-St Louis
4h 15m
1 stop
ATW12:10 amAppleton Intl
$359

momondo 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, momondo users made 832,500 searches. Data last updated June 18, 2026.
Use the filters below to find and compare flights from Appleton to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Thu 8/20

6:00 am-10:23 am

1 stop4h 23m

Lambert-St Louis

Sun 8/23

6:30 am-10:29 am

1 stop3h 59m

$289

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Mon 6/29

11:09 am-5:23 pm

1 stop6h 14m

Lambert-St Louis

Sun 7/5

6:30 am-1:27 pm

1 stop6h 57m

$304

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Mon 6/29

11:09 am-5:23 pm

1 stop6h 14m

Lambert-St Louis

Sun 7/5

6:30 am-1:27 pm

1 stop6h 57m

$319

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Thu 7/23

7:15 pm-12:16 am

1 stop5h 01m

Lambert-St Louis

Mon 7/27

6:55 am-10:45 am

1 stop3h 50m

$324

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Mon 6/29

6:28 pm-12:16 am

1 stop5h 48m

Lambert-St Louis

Sun 7/5

6:55 am-10:45 am

1 stop3h 50m

$339

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Thu 10/22

11:10 am-4:50 pm

1 stop5h 40m

Lambert-St Louis

Sun 10/25

6:30 am-11:27 am

1 stop4h 57m

$357

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Fri 7/24

7:15 pm-12:16 am

1 stop5h 01m

Lambert-St Louis

Sun 7/26

7:55 pm-12:10 am

1 stop4h 15m

$359

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Tue 6/30

11:17 am-9:37 pm

2 stops10h 20m

Lambert-St Louis

Tue 7/7

5:58 pm-12:10 am

1 stop6h 12m

$387

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Thu 8/20

4:17 pm-12:14 am

1 stop7h 57m

Lambert-St Louis

Sun 8/23

6:33 pm-3:14 pm

2 stops20h 41m

$388

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Fri 7/3

12:24 pm-6:13 pm

1 stop5h 49m

Lambert-St Louis

Sat 7/4

11:25 am-4:54 pm

1 stop5h 29m

$389

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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2

See travel insights to St. Louis from

How to get the cheapest flight ticket from Appleton to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Appleton and St. Louis?

What is the cheapest month to fly to St. Louis?

In general, February is the cheapest month to fly from Appleton to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $268. The month of March is another great option to travel to St. Louis, with average flight prices from Appleton averaging around $273.

When to book flights from Appleton to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Appleton to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Appleton to St. Louis (ATW to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Appleton to St. Louis

Fastest flight time

3h 57m

Direct flights

None
The fastest flight from Appleton to St. Louis takes 3h 57m
There are no direct flights from Appleton to St. Louis. There are no popular flight routes from Appleton to St. Louis.
Search flight deals

Frequently asked questions about flying from Appleton to St. Louis

  • How far is Appleton Intl to Lambert-St Louis by plane?

    A flight from Appleton Intl to Lambert-St Louis will travel around 399.8 mi. By plane, this route typically takes 3h 57m.

  • When did momondo last update prices for flights from Appleton Intl Airport to Lambert-St Louis Airport?

    Prices for flights from Appleton Intl Airport to Lambert-St Louis Airport refresh daily.

  • How many operators does momondo search for flights from Appleton Intl Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Appleton Intl Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Appleton Intl Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Appleton to St. Louis?

Best airlines flying from Appleton to St. Louis

Compare and see reviews for airlines that fly from Appleton to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $213Free CancellationRating
7.8
8,410 reviews
Search Delta flights
American AirlinesPriceFrom $228Free CancellationRating
7.1
11,685 reviews
Search American Airlines flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,859 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
Maryland Heights
Florissant
O'Fallon
St. Peters
Collinsville
Alton
Wentzville
Clayton
Fenton
Farmington
Festus
Eureka
Litchfield
Edwardsville
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Appleton to St. Louis?

Finding the right flight to St. Louis from Appleton is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from Appleton to St. Louis with flexible booking policies on momondo?

momondo does allow users to show only those flights to St. Louis from Appleton which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Appleton to St. Louis?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Appleton to St. Louis.

I’m not ready to book a flight from Appleton to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from Appleton are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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