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Cheap flights from Baton Rouge to St. Louis from $249

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Baton Rouge to St. Louis departing on 10/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Baton Rouge to St. Louis

Cheap round-trip flights

American Airlines Logo
6:46 pm - 11:18 pmBTR-STL
4h 32m1 stop
American Airlines Logo
6:25 am - 11:39 amSTL-BTR
5h 14m1 stop
$249American Airlines
Find Deal
Fri, Oct 24 - Wed, Oct 29
American Airlines Logo
4:28 pm - 11:18 pmBTR-STL
6h 50m1 stop
American Airlines Logo
6:00 am - 1:47 pmSTL-BTR
7h 47m2 stops
$254American Airlines
Find Deal
Fri, Oct 24 - Wed, Oct 29
United Airlines Logo
2:05 pm - 6:58 pmBTR-STL
4h 53m1 stop
United Airlines Logo
8:20 am - 3:22 pmSTL-BTR
7h 02m1 stop
$259United Airlines
Find Deal
Thu, Aug 28 - Sun, Aug 31
American Airlines Logo
6:46 pm - 11:18 pmBTR-STL
4h 32m1 stop
American Airlines Logo
6:00 am - 1:47 pmSTL-BTR
7h 47m2 stops
$289American Airlines
Find Deal
Fri, Oct 24 - Wed, Oct 29
American Airlines Logo
4:25 pm - 11:14 pmBTR-STL
6h 49m1 stop
American Airlines Logo
9:23 am - 3:53 pmSTL-BTR
6h 30m1 stop
$299American Airlines
Find Deal
Wed, Aug 27 - Sun, Aug 31
Delta Logo
10:20 am - 2:37 pmBTR-STL
4h 17m1 stop
Delta Logo
7:00 am - 1:37 pmSTL-BTR
6h 37m1 stop
$319Delta
Find Deal
Tue, Sep 9 - Wed, Sep 10
United Airlines Logo
12:05 pm - 11:44 pmBTR-STL
11h 39m2 stops
United Airlines Logo
8:20 am - 3:11 pmSTL-BTR
6h 51m1 stop
$324United Airlines
Find Deal
Fri, Sep 5 - Mon, Sep 15
American Airlines Logo
12:15 pm - 8:32 pmBTR-STL
8h 17m2 stops
American Airlines Logo
9:56 am - 6:03 pmSTL-BTR
8h 07m2 stops
$329American Airlines
Find Deal
Tue, Sep 9 - Wed, Sep 10
United Airlines Logo
12:05 pm - 6:58 pmBTR-STL
6h 53m1 stop
United Airlines Logo
8:15 am - 9:10 pmSTL-BTR
12h 55m2 stops
$334United Airlines
Find Deal
Thu, Aug 28 - Sun, Aug 31
American Airlines Logo
10:50 am - 6:23 pmBTR-STL
7h 33m2 stops
American Airlines Logo
9:23 am - 3:53 pmSTL-BTR
6h 30m1 stop
$344American Airlines
Find Deal
Wed, Aug 27 - Sun, Aug 31

American Airlines flights from Baton Rouge to St. Louis

Our best American Airlines deals on Baton Rouge to St. Louis flight tickets
American Airlines
Oct 24
BTR6:46 pmBaton Rouge Ryan
4h 32m
1 stop
STL11:18 pmLambert-St Louis
Oct 29
STL6:25 amLambert-St Louis
5h 14m
1 stop
BTR11:39 amBaton Rouge Ryan
$249
Find similar
American Airlines
Oct 24
BTR4:28 pmBaton Rouge Ryan
6h 50m
1 stop
STL11:18 pmLambert-St Louis
Oct 29
STL6:00 amLambert-St Louis
7h 47m
2 stops
BTR1:47 pmBaton Rouge Ryan
$254
Find similar
American Airlines
Oct 24
BTR6:46 pmBaton Rouge Ryan
4h 32m
1 stop
STL11:18 pmLambert-St Louis
Oct 29
STL6:00 amLambert-St Louis
7h 47m
2 stops
BTR1:47 pmBaton Rouge Ryan
$289
Find similar

United Airlines flights from Baton Rouge to St. Louis

Our best United Airlines deals on Baton Rouge to St. Louis flight tickets
United Airlines
Aug 28
BTR2:05 pmBaton Rouge Ryan
4h 53m
1 stop
STL6:58 pmLambert-St Louis
Aug 31
STL8:20 amLambert-St Louis
7h 02m
1 stop
BTR3:22 pmBaton Rouge Ryan
$259
Find similar
United Airlines
Sep 5
BTR12:05 pmBaton Rouge Ryan
11h 39m
2 stops
STL11:44 pmLambert-St Louis
Sep 15
STL8:20 amLambert-St Louis
6h 51m
1 stop
BTR3:11 pmBaton Rouge Ryan
$324
Find similar
United Airlines
Aug 28
BTR12:05 pmBaton Rouge Ryan
6h 53m
1 stop
STL6:58 pmLambert-St Louis
Aug 31
STL8:15 amLambert-St Louis
12h 55m
2 stops
BTR9:10 pmBaton Rouge Ryan
$334
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Baton Rouge 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 August 14, 2025.
Use the filters below to find and compare flights from Baton Rouge to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 10/24

6:46 pm-11:18 pm

1 stop4h 32m

Lambert-St Louis

Wed 10/29

6:25 am-11:39 am

1 stop5h 14m

$249

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 10/24

4:28 pm-11:18 pm

1 stop6h 50m

Lambert-St Louis

Wed 10/29

6:00 am-1:47 pm

2 stops7h 47m

$254

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 8/28

2:05 pm-6:58 pm

1 stop4h 53m

Lambert-St Louis

Sun 8/31

8:20 am-3:22 pm

1 stop7h 02m

$259

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 10/24

6:46 pm-11:18 pm

1 stop4h 32m

Lambert-St Louis

Wed 10/29

6:00 am-1:47 pm

2 stops7h 47m

$289

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 8/27

4:25 pm-11:14 pm

1 stop6h 49m

Lambert-St Louis

Sun 8/31

9:23 am-3:53 pm

1 stop6h 30m

$299

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Tue 9/9

10:20 am-2:37 pm

1 stop4h 17m

Lambert-St Louis

Wed 9/10

7:00 am-1:37 pm

1 stop6h 37m

$319

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 9/5

12:05 pm-11:44 pm

2 stops11h 39m

Lambert-St Louis

Mon 9/15

8:20 am-3:11 pm

1 stop6h 51m

$324

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Tue 9/9

12:15 pm-8:32 pm

2 stops8h 17m

Lambert-St Louis

Wed 9/10

9:56 am-6:03 pm

2 stops8h 07m

$329

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 8/28

12:05 pm-6:58 pm

1 stop6h 53m

Lambert-St Louis

Sun 8/31

8:15 am-9:10 pm

2 stops12h 55m

$334

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 8/27

10:50 am-6:23 pm

2 stops7h 33m

Lambert-St Louis

Sun 8/31

9:23 am-3:53 pm

1 stop6h 30m

$344

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

How to get the cheapest flight ticket from Baton Rouge 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 Baton Rouge and St. Louis?

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

In general, April is the cheapest month to fly from Baton Rouge to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $298. The month of July is another great option to travel to St. Louis, with average flight prices from Baton Rouge averaging around $307.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $273. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $431. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Baton Rouge in the evening is the least expensive time of day to depart. momondo users have found prices as low as $337 when looking at flights departing in the evening. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $392 per ticket.

When to book flights from Baton Rouge to St. Louis

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

Cheap Baton Rouge to St. Louis (BTR to STL) flight deals and tips

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

Best Price Found

$249

Fastest flight time

4h 17m

Direct flights

None

Airports in St. Louis

1 airport
The best flight deal from Baton Rouge to St. Louis found on momondo in the last 72 hours is $249
The fastest flight from Baton Rouge to St. Louis takes 4h 17m
There are no direct flights from Baton Rouge to St. Louis. Popular non-direct route for this connection is Baton Rouge Ryan Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

  • How far is Baton Rouge Ryan to Lambert-St Louis by plane?

    Lambert-St Louis is 567.0 mi away from Baton Rouge Ryan. 4h 17m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Baton Rouge Ryan Airport to Lambert-St Louis Airport?

    Prices for flights from Baton Rouge Ryan Airport to Lambert-St Louis Airport refresh daily.

  • How many operators does momondo search for flights from Baton Rouge Ryan Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Baton Rouge Ryan Airport to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Baton Rouge Ryan 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 required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from Baton Rouge to St. Louis

Compare and see reviews for airlines that fly from Baton Rouge to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $247Free CancellationRating
8.0
7,980 reviews
Search Delta flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
American AirlinesPriceFrom $253Free CancellationRating
7.2
10,000 reviews
Search American 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
Fenton
Wentzville
Collinsville
Alton
St. Peters
Farmington
Festus
Glencoe
Eureka
Clayton
Edwardsville
Litchfield
Shrewsbury

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for Baton Rouge to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from Baton Rouge 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 Baton Rouge to St. Louis.

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

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Baton Rouge and alert you when they change.

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