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Cheap flights from Appleton to St. Louis from $161

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Appleton to St. Louis departing on 3/23. 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
0 bags

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Find the cheapest flights from Appleton to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:30 pm - 11:56 pm
ATW
-
STL
5h 26m
1 stop
American Airlines Logo
6:00 am - 10:28 am
STL
-
ATW
4h 28m
1 stop
$279American Airlines
Wed, May 20 - Thu, Jun 4
American Airlines Logo
6:00 am - 1:22 pm
ATW
-
STL
7h 22m
2 stops
American Airlines Logo
6:00 am - 10:28 am
STL
-
ATW
4h 28m
1 stop
$284American Airlines
Wed, May 20 - Thu, Jun 4
American Airlines Logo
5:40 am - 11:35 am
ATW
-
STL
5h 55m
1 stop
American Airlines Logo
8:00 am - 12:49 pm
STL
-
ATW
4h 49m
1 stop
$289American Airlines
Fri, Apr 3 - Mon, Apr 6
American Airlines Logo
6:31 pm - 11:46 pm
ATW
-
STL
5h 15m
1 stop
American Airlines Logo
7:05 am - 1:00 pm
STL
-
ATW
5h 55m
1 stop
$291American Airlines
Tue, Apr 14 - Wed, Apr 15
American Airlines Logo
9:38 am - 7:30 pm
ATW
-
STL
9h 52m
2 stops
American Airlines Logo
8:00 am - 12:49 pm
STL
-
ATW
4h 49m
1 stop
$294American Airlines
Fri, Apr 3 - Mon, Apr 6
Multiple Airlines Logo
7:00 am - 11:19 pm
ATW
-
STL
16h 19m
1 stop
Multiple Airlines Logo
9:50 am - 10:03 pm
STL
-
ATW
12h 13m
2 stops
$306Multiple Airlines
Mon, Apr 27 - Fri, May 1
United Airlines Logo
2:54 pm - 9:52 pm
ATW
-
STL
6h 58m
1 stop
United Airlines Logo
7:45 am - 2:00 pm
STL
-
ATW
6h 15m
1 stop
$314United Airlines
Tue, Apr 21 - Fri, Apr 24
American Airlines Logo
10:57 am - 4:41 pm
ATW
-
STL
5h 44m
1 stop
American Airlines Logo
12:27 pm - 6:01 pm
STL
-
ATW
5h 34m
1 stop
$326American Airlines
Tue, Apr 7 - Thu, Apr 9
American Airlines Logo
10:57 am - 7:30 pm
ATW
-
STL
8h 33m
2 stops
American Airlines Logo
8:03 pm - 11:40 pm
STL
-
ATW
3h 37m
1 stop
$328American Airlines
Tue, Apr 14 - Wed, Apr 15
Delta Logo
7:00 am - 1:17 pm
ATW
-
STL
6h 17m
1 stop
Delta Logo
10:45 am - 4:37 pm
STL
-
ATW
5h 52m
1 stop
$331Delta
Sat, Sep 5 - Sat, Sep 12

American Airlines flights from Appleton to St. Louis

Our best American Airlines deals on Appleton to St. Louis flight tickets
American Airlines
May 20
ATW6:30 pmAppleton Intl
5h 26m
1 stop
STL11:56 pmLambert-St Louis
Jun 4
STL6:00 amLambert-St Louis
4h 28m
1 stop
ATW10:28 amAppleton Intl
$279
American Airlines
May 20
ATW6:00 amAppleton Intl
7h 22m
2 stops
STL1:22 pmLambert-St Louis
Jun 4
STL6:00 amLambert-St Louis
4h 28m
1 stop
ATW10:28 amAppleton Intl
$284
American Airlines
Apr 3
ATW5:40 amAppleton Intl
5h 55m
1 stop
STL11:35 amLambert-St Louis
Apr 6
STL8:00 amLambert-St Louis
4h 49m
1 stop
ATW12:49 pmAppleton Intl
$289

United Airlines flights from Appleton to St. Louis

Our best United Airlines deals on Appleton to St. Louis flight tickets
United Airlines
Apr 21
ATW2:54 pmAppleton Intl
6h 58m
1 stop
STL9:52 pmLambert-St Louis
Apr 24
STL7:45 amLambert-St Louis
6h 15m
1 stop
ATW2:00 pmAppleton Intl
$314
United Airlines
Apr 11
ATW2:54 pmAppleton Intl
6h 58m
1 stop
STL9:52 pmLambert-St Louis
Apr 15
STL9:10 amLambert-St Louis
4h 50m
1 stop
ATW2:00 pmAppleton Intl
$349
United Airlines
Apr 11
ATW3:46 pmAppleton Intl
5h 27m
1 stop
STL9:13 pmLambert-St Louis
Apr 15
STL7:45 amLambert-St Louis
6h 15m
1 stop
ATW2:00 pmAppleton Intl
$369

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 March 14, 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

Wed 5/20

6:30 pm-11:56 pm

1 stop5h 26m

Lambert-St Louis

Thu 6/4

6:00 am-10:28 am

1 stop4h 28m

$279

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Wed 5/20

6:00 am-1:22 pm

2 stops7h 22m

Lambert-St Louis

Thu 6/4

6:00 am-10:28 am

1 stop4h 28m

$284

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Fri 4/3

5:40 am-11:35 am

1 stop5h 55m

Lambert-St Louis

Mon 4/6

8:00 am-12:49 pm

1 stop4h 49m

$289

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Tue 4/14

6:31 pm-11:46 pm

1 stop5h 15m

Lambert-St Louis

Wed 4/15

7:05 am-1:00 pm

1 stop5h 55m

$291

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Fri 4/3

9:38 am-7:30 pm

2 stops9h 52m

Lambert-St Louis

Mon 4/6

8:00 am-12:49 pm

1 stop4h 49m

$294

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Mon 4/27

7:00 am-11:19 pm

1 stop16h 19m

Lambert-St Louis

Fri 5/1

9:50 am-10:03 pm

2 stops12h 13m

$306

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Tue 4/21

2:54 pm-9:52 pm

1 stop6h 58m

Lambert-St Louis

Fri 4/24

7:45 am-2:00 pm

1 stop6h 15m

$314

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Tue 4/7

10:57 am-4:41 pm

1 stop5h 44m

Lambert-St Louis

Thu 4/9

12:27 pm-6:01 pm

1 stop5h 34m

$326

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Tue 4/14

10:57 am-7:30 pm

2 stops8h 33m

Lambert-St Louis

Wed 4/15

8:03 pm-11:40 pm

1 stop3h 37m

$328

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Sat 9/5

7:00 am-1:17 pm

1 stop6h 17m

Lambert-St Louis

Sat 9/12

10:45 am-4:37 pm

1 stop5h 52m

$331

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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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 cheapest month to fly to St. Louis?

In general, July 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 $260. The month of February is another great option to travel to St. Louis, with average flight prices from Appleton averaging around $268.

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 58m

Direct flights

None
The fastest flight from Appleton to St. Louis takes 3h 58m
There are no direct flights from Appleton to St. Louis. There are no popular flight routes from Appleton to St. Louis.
Search flight deals

  • 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 58m.

  • 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
American AirlinesPriceFrom $212Free CancellationRating
7.1
11,464 reviews
Search American Airlines flights
DeltaPriceFrom $213Free CancellationRating
7.9
8,291 reviews
Search Delta flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,423 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
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Collinsville
St. Peters
Fenton
Alton
Wentzville
Farmington
Edwardsville
Festus
Clayton
Eureka
Litchfield
Glencoe
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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