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Cheap flights from Baton Rouge to St. Louis from $269

This is the cheapest one-way 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 9/13. 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 Baton Rouge to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
4:00 pm - 10:15 pm
BTR
-
STL
6h 15m
1 stop
Delta Logo
3:39 pm - 10:01 pm
STL
-
BTR
6h 22m
1 stop
$307Delta
Wed, Jul 29 - Tue, Aug 4
Delta Logo
10:25 am - 2:48 pm
BTR
-
STL
4h 23m
1 stop
Delta Logo
9:15 am - 3:08 pm
STL
-
BTR
5h 53m
1 stop
$309Delta
Wed, Jul 29 - Mon, Aug 3
Delta Logo
6:00 am - 10:51 am
BTR
-
STL
4h 51m
1 stop
Delta Logo
4:40 pm - 10:01 pm
STL
-
BTR
5h 21m
1 stop
$324Delta
Thu, Nov 5 - Mon, Nov 9
Delta Logo
1:27 pm - 5:53 pm
BTR
-
STL
4h 26m
1 stop
Delta Logo
6:00 am - 12:47 pm
STL
-
BTR
6h 47m
1 stop
$339Delta
Fri, Jul 17 - Sun, Jul 19
United Airlines Logo
5:00 am - 3:46 pm
BTR
-
STL
10h 46m
2 stops
United Airlines Logo
6:30 pm - 10:46 pm
STL
-
BTR
4h 16m
1 stop
$341United Airlines
Wed, Jul 29 - Mon, Aug 3
United Airlines Logo
12:10 pm - 9:26 pm
BTR
-
STL
9h 16m
2 stops
United Airlines Logo
6:14 am - 11:20 am
STL
-
BTR
5h 06m
1 stop
$353United Airlines
Wed, Jul 29 - Wed, Aug 5
Delta Logo
6:07 am - 10:55 am
BTR
-
STL
4h 48m
1 stop
Delta Logo
10:05 am - 5:05 pm
STL
-
BTR
7h 00m
1 stop
$354Delta
Thu, Sep 17 - Mon, Sep 21
United Airlines Logo
5:00 am - 3:46 pm
BTR
-
STL
10h 46m
2 stops
United Airlines Logo
6:30 pm - 10:46 pm
STL
-
BTR
4h 16m
1 stop
$359United Airlines
Wed, Jul 29 - Mon, Aug 3
American Airlines Logo
6:16 pm - 12:04 am
BTR
-
STL
5h 48m
1 stop
American Airlines Logo
5:32 am - 10:58 am
STL
-
BTR
5h 26m
1 stop
$369American Airlines
Fri, Jul 17 - Sun, Jul 19
United Airlines Logo
5:00 am - 3:46 pm
BTR
-
STL
10h 46m
2 stops
United Airlines Logo
6:30 pm - 10:46 pm
STL
-
BTR
4h 16m
1 stop
$372United Airlines
Wed, Jul 29 - Mon, Aug 3

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United Airlines flights from Baton Rouge to St. Louis

Our best United Airlines deals on Baton Rouge to St. Louis flight tickets
United Airlines
Jul 29
BTR5:00 amBaton Rouge Ryan
10h 46m
2 stops
STL3:46 pmLambert-St Louis
Aug 3
STL6:30 pmLambert-St Louis
4h 16m
1 stop
BTR10:46 pmBaton Rouge Ryan
$341
United Airlines
Jul 29
BTR12:10 pmBaton Rouge Ryan
9h 16m
2 stops
STL9:26 pmLambert-St Louis
Aug 5
STL6:14 amLambert-St Louis
5h 06m
1 stop
BTR11:20 amBaton Rouge Ryan
$353
United Airlines
Jul 11
BTR2:05 pmBaton Rouge Ryan
9h 24m
2 stops
STL11:29 pmLambert-St Louis
Jul 31
STL6:30 pmLambert-St Louis
4h 16m
1 stop
BTR10:46 pmBaton Rouge Ryan
$354

Delta flights from Baton Rouge to St. Louis

Our best Delta deals on Baton Rouge to St. Louis flight tickets
Delta
Jul 29
BTR4:00 pmBaton Rouge Ryan
6h 15m
1 stop
STL10:15 pmLambert-St Louis
Aug 4
STL3:39 pmLambert-St Louis
6h 22m
1 stop
BTR10:01 pmBaton Rouge Ryan
$307
Delta
Jul 29
BTR10:25 amBaton Rouge Ryan
4h 23m
1 stop
STL2:48 pmLambert-St Louis
Aug 3
STL9:15 amLambert-St Louis
5h 53m
1 stop
BTR3:08 pmBaton Rouge Ryan
$309
Delta
Nov 5
BTR6:00 amBaton Rouge Ryan
4h 51m
1 stop
STL10:51 amLambert-St Louis
Nov 9
STL4:40 pmLambert-St Louis
5h 21m
1 stop
BTR10:01 pmBaton Rouge Ryan
$324

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 July 5, 2026.
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

Cheapest round-trip

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 7/29

4:00 pm-10:15 pm

1 stop6h 15m

Lambert-St Louis

Tue 8/4

3:39 pm-10:01 pm

1 stop6h 22m

$307

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 7/29

10:25 am-2:48 pm

1 stop4h 23m

Lambert-St Louis

Mon 8/3

9:15 am-3:08 pm

1 stop5h 53m

$309
Quickest round-trip

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 11/5

6:00 am-10:51 am

1 stop4h 51m

Lambert-St Louis

Mon 11/9

4:40 pm-10:01 pm

1 stop5h 21m

$324

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 7/17

1:27 pm-5:53 pm

1 stop4h 26m

Lambert-St Louis

Sun 7/19

6:00 am-12:47 pm

1 stop6h 47m

$339

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 7/29

5:00 am-3:46 pm

2 stops10h 46m

Lambert-St Louis

Mon 8/3

6:30 pm-10:46 pm

1 stop4h 16m

$341

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 7/29

12:10 pm-9:26 pm

2 stops9h 16m

Lambert-St Louis

Wed 8/5

6:14 am-11:20 am

1 stop5h 06m

$353

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 9/17

6:07 am-10:55 am

1 stop4h 48m

Lambert-St Louis

Mon 9/21

10:05 am-5:05 pm

1 stop7h 00m

$354

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 7/29

5:00 am-3:46 pm

2 stops10h 46m

Lambert-St Louis

Mon 8/3

6:30 pm-10:46 pm

1 stop4h 16m

$359

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 7/17

6:16 pm-12:04 am

1 stop5h 48m

Lambert-St Louis

Sun 7/19

5:32 am-10:58 am

1 stop5h 26m

$369

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 7/29

5:00 am-3:46 pm

2 stops10h 46m

Lambert-St Louis

Mon 8/3

6:30 pm-10:46 pm

1 stop4h 16m

$372

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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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, January 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 $263. The month of February is another great option to travel to St. Louis, with average flight prices from Baton Rouge averaging around $273.

How have Baton Rouge to St. Louis flight prices changed over time?

As of July 2026, prices for Baton Rouge to St. Louis flights are approximately 206% more expensive when compared to flights at the same time last year.

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

Fastest flight time

4h 10m

Direct flights

None
The fastest flight from Baton Rouge to St. Louis takes 4h 10m
There are no direct flights from Baton Rouge to St. Louis. There are no popular flight routes from Baton Rouge to St. Louis.
Search flight deals

Frequently asked questions about flying from Baton Rouge to St. Louis

  • 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 10m 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
United AirlinesPriceFrom $228Free CancellationRating
7.4
9,933 reviews
Search United Airlines flights
American AirlinesPriceFrom $248Free CancellationRating
7.1
11,777 reviews
Search American Airlines flights
DeltaPriceFrom $248Free CancellationRating
7.8
8,451 reviews
Search Delta 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
Fenton
Farmington
Wentzville
Clayton
Festus
Eureka
Litchfield
Edwardsville
Grafton
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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