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Cheap flights from La Crosse to St. Louis from $408

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from La Crosse to St. Louis departing on 9/26. 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

Find the cheapest flights from La Crosse to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:54 am - 10:20 am
LSE
-
STL
4h 26m
1 stop
American Airlines Logo
5:00 am - 11:22 am
STL
-
LSE
6h 22m
1 stop
$408American Airlines
Sat, Sep 26 - Tue, Sep 29
American Airlines Logo
11:57 am - 4:24 pm
LSE
-
STL
4h 27m
1 stop
American Airlines Logo
6:00 am - 11:26 am
STL
-
LSE
5h 26m
1 stop
$460American Airlines
Wed, Aug 5 - Mon, Aug 10
American Airlines Logo
5:54 am - 10:42 pm
LSE
-
STL
16h 48m
2 stops
American Airlines Logo
6:53 am - 12:20 am
STL
-
LSE
17h 27m
2 stops
$475American Airlines
Sat, Sep 26 - Tue, Sep 29
American Airlines Logo
12:26 pm - 4:48 pm
LSE
-
STL
4h 22m
1 stop
American Airlines Logo
11:01 am - 4:52 pm
STL
-
LSE
5h 51m
1 stop
$478American Airlines
Sat, Sep 26 - Wed, Sep 30
American Airlines Logo
5:54 am - 10:42 pm
LSE
-
STL
16h 48m
2 stops
American Airlines Logo
6:53 am - 12:20 am
STL
-
LSE
17h 27m
2 stops
$483American Airlines
Sat, Sep 26 - Wed, Sep 30
American Airlines Logo
5:54 am - 1:03 pm
LSE
-
STL
7h 09m
2 stops
American Airlines Logo
7:27 am - 11:22 am
STL
-
LSE
3h 55m
1 stop
$491American Airlines
Sat, Sep 26 - Tue, Sep 29
American Airlines Logo
11:56 am - 5:46 pm
LSE
-
STL
5h 50m
1 stop
American Airlines Logo
1:26 pm - 5:23 pm
STL
-
LSE
3h 57m
1 stop
$504American Airlines
Fri, Jul 3 - Sun, Jul 5
United Airlines Logo
6:15 am - 2:18 pm
LSE
-
STL
8h 03m
1 stop
United Airlines Logo
10:23 am - 6:10 pm
STL
-
LSE
7h 47m
1 stop
$509United Airlines
Wed, Oct 28 - Sat, Oct 31
American Airlines Logo
6:00 am - 4:25 pm
LSE
-
STL
10h 25m
2 stops
American Airlines Logo
6:00 am - 11:26 am
STL
-
LSE
5h 26m
1 stop
$543American Airlines
Wed, Aug 5 - Mon, Aug 10
American Airlines Logo
5:53 pm - 12:16 am
LSE
-
STL
6h 23m
1 stop
American Airlines Logo
7:55 pm - 11:59 pm
STL
-
LSE
4h 04m
1 stop
$556American Airlines
Fri, Jul 10 - Sun, Jul 12

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American Airlines flights from La Crosse to St. Louis

Our best American Airlines deals on La Crosse to St. Louis flight tickets
American Airlines
Sep 26
LSE5:54 amLa Crosse
4h 26m
1 stop
STL10:20 amLambert-St Louis
Sep 29
STL5:00 amLambert-St Louis
6h 22m
1 stop
LSE11:22 amLa Crosse
$408
American Airlines
Aug 5
LSE11:57 amLa Crosse
4h 27m
1 stop
STL4:24 pmLambert-St Louis
Aug 10
STL6:00 amLambert-St Louis
5h 26m
1 stop
LSE11:26 amLa Crosse
$460
American Airlines
Sep 26
LSE5:54 amLa Crosse
16h 48m
2 stops
STL10:42 pmLambert-St Louis
Sep 29
STL6:53 amLambert-St Louis
17h 27m
2 stops
LSE12:20 amLa Crosse
$475

United Airlines flights from La Crosse to St. Louis

Our best United Airlines deals on La Crosse to St. Louis flight tickets
United Airlines
Oct 28
LSE6:15 amLa Crosse
8h 03m
1 stop
STL2:18 pmLambert-St Louis
Oct 31
STL10:23 amLambert-St Louis
7h 47m
1 stop
LSE6:10 pmLa Crosse
$509
United Airlines
Oct 28
LSE9:42 amLa Crosse
13h 43m
2 stops
STL11:25 pmLambert-St Louis
Oct 31
STL8:00 amLambert-St Louis
10h 10m
1 stop
LSE6:10 pmLa Crosse
$628

momondo Fare Finder

 
Customize your flight search to find flights from La Crosse 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 14, 2026.
Use the filters below to find and compare flights from La Crosse to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

La CrosseSt. Louis

LSE - STL

LSESTL

La Crosse

Sat 9/26

5:54 am-10:20 am

1 stop4h 26m

Lambert-St Louis

Tue 9/29

5:00 am-11:22 am

1 stop6h 22m

$408

La CrosseSt. Louis

LSE - STL

LSESTL

La Crosse

Wed 8/5

11:57 am-4:24 pm

1 stop4h 27m

Lambert-St Louis

Mon 8/10

6:00 am-11:26 am

1 stop5h 26m

$460

La CrosseSt. Louis

LSE - STL

LSESTL

La Crosse

Sat 9/26

5:54 am-10:42 pm

2 stops16h 48m

Lambert-St Louis

Tue 9/29

6:53 am-12:20 am

2 stops17h 27m

$475

La CrosseSt. Louis

LSE - STL

LSESTL

La Crosse

Sat 9/26

12:26 pm-4:48 pm

1 stop4h 22m

Lambert-St Louis

Wed 9/30

11:01 am-4:52 pm

1 stop5h 51m

$478

La CrosseSt. Louis

LSE - STL

LSESTL

La Crosse

Sat 9/26

5:54 am-10:42 pm

2 stops16h 48m

Lambert-St Louis

Wed 9/30

6:53 am-12:20 am

2 stops17h 27m

$483

La CrosseSt. Louis

LSE - STL

LSESTL

La Crosse

Sat 9/26

5:54 am-1:03 pm

2 stops7h 09m

Lambert-St Louis

Tue 9/29

7:27 am-11:22 am

1 stop3h 55m

$491
Quickest round-trip

La CrosseSt. Louis

LSE - STL

LSESTL

La Crosse

Fri 7/3

11:56 am-5:46 pm

1 stop5h 50m

Lambert-St Louis

Sun 7/5

1:26 pm-5:23 pm

1 stop3h 57m

$504

La CrosseSt. Louis

LSE - STL

LSESTL

La Crosse

Wed 10/28

6:15 am-2:18 pm

1 stop8h 03m

Lambert-St Louis

Sat 10/31

10:23 am-6:10 pm

1 stop7h 47m

$509

La CrosseSt. Louis

LSE - STL

LSESTL

La Crosse

Wed 8/5

6:00 am-4:25 pm

2 stops10h 25m

Lambert-St Louis

Mon 8/10

6:00 am-11:26 am

1 stop5h 26m

$543

La CrosseSt. Louis

LSE - STL

LSESTL

La Crosse

Fri 7/10

5:53 pm-12:16 am

1 stop6h 23m

Lambert-St Louis

Sun 7/12

7:55 pm-11:59 pm

1 stop4h 04m

$556

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from La Crosse 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 airline that flies from La Crosse to Lambert-St Louis?

American Airlines is the most popular carrier operating from La Crosse to Lambert-St Louis

When to book flights from La Crosse to St. Louis

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

Cheap La Crosse to St. Louis (LSE to STL) flight deals and tips

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

Fastest flight time

4h 26m

Direct flights

None
The fastest flight from La Crosse to St. Louis takes 4h 26m
There are no direct flights from La Crosse to St. Louis. There are no popular flight routes from La Crosse to St. Louis.
Search flight deals

Frequently asked questions about flying from La Crosse to St. Louis

  • How far is La Crosse to Lambert-St Louis by plane?

    The distance between La Crosse and Lambert-St Louis is about 361.3 mi. By plane, this route typically takes 4h 26m.

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

    Prices for flights from La Crosse Airport to Lambert-St Louis Airport are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from La Crosse 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.

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
Fenton
Clayton
Farmington
Festus
Eureka
Litchfield
Edwardsville
Grafton
Shrewsbury

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from La Crosse to St. Louis. momondo saves you time and could save you money on your trip.

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

All flight searches from La Crosse to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential La Crosse to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from La Crosse to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

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