Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Baton Rouge to St. Louis from $129

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 4/15. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
1:36 pm - 5:53 pm
BTR
-
STL
4h 17m
1 stop
Delta Logo
4:21 pm - 10:03 pm
STL
-
BTR
5h 42m
1 stop
$257Delta
Fri, Mar 27 - Mon, Mar 30
United Airlines Logo
5:00 am - 9:21 am
BTR
-
STL
4h 21m
1 stop
United Airlines Logo
6:00 am - 1:13 pm
STL
-
BTR
7h 13m
1 stop
$265United Airlines
Sat, Mar 7 - Tue, Mar 10
United Airlines Logo
5:00 am - 9:21 am
BTR
-
STL
4h 21m
1 stop
United Airlines Logo
6:25 am - 3:32 pm
STL
-
BTR
9h 07m
2 stops
$270United Airlines
Sat, Mar 7 - Tue, Mar 10
United Airlines Logo
5:00 am - 12:22 pm
BTR
-
STL
7h 22m
2 stops
United Airlines Logo
4:49 pm - 9:10 pm
STL
-
BTR
4h 21m
1 stop
$286United Airlines
Wed, Apr 15 - Mon, Apr 20
American Airlines Logo
5:00 am - 11:01 am
BTR
-
STL
6h 01m
1 stop
American Airlines Logo
11:46 am - 5:26 pm
STL
-
BTR
5h 40m
1 stop
$292American Airlines
Sat, Mar 7 - Wed, Mar 11
American Airlines Logo
5:00 am - 11:01 am
BTR
-
STL
6h 01m
1 stop
American Airlines Logo
8:00 am - 4:03 pm
STL
-
BTR
8h 03m
2 stops
$298American Airlines
Sat, Mar 7 - Wed, Mar 11
American Airlines Logo
7:08 am - 12:43 pm
BTR
-
STL
5h 35m
1 stop
American Airlines Logo
1:34 pm - 9:36 pm
STL
-
BTR
8h 02m
1 stop
$301American Airlines
Thu, Mar 5 - Mon, Mar 9
Delta Logo
1:40 pm - 8:49 pm
BTR
-
STL
7h 09m
1 stop
Delta Logo
3:42 pm - 9:58 pm
STL
-
BTR
6h 16m
1 stop
$308Delta
Thu, Jun 18 - Sun, Jun 21
American Airlines Logo
7:08 am - 12:43 pm
BTR
-
STL
5h 35m
1 stop
American Airlines Logo
1:34 pm - 9:36 pm
STL
-
BTR
8h 02m
1 stop
$328American Airlines
Thu, Mar 5 - Mon, Mar 9
American Airlines Logo
7:08 am - 1:16 pm
BTR
-
STL
6h 08m
1 stop
American Airlines Logo
5:12 am - 9:54 am
STL
-
BTR
4h 42m
1 stop
$332American Airlines
Tue, Mar 10 - Sat, Mar 14

American Airlines flights from Baton Rouge to St. Louis

Our best American Airlines deals on Baton Rouge to St. Louis flight tickets
American Airlines
Mar 7
BTR5:00 amBaton Rouge Ryan
6h 01m
1 stop
STL11:01 amLambert-St Louis
Mar 11
STL11:46 amLambert-St Louis
5h 40m
1 stop
BTR5:26 pmBaton Rouge Ryan
$292
American Airlines
Mar 7
BTR5:00 amBaton Rouge Ryan
6h 01m
1 stop
STL11:01 amLambert-St Louis
Mar 11
STL8:00 amLambert-St Louis
8h 03m
2 stops
BTR4:03 pmBaton Rouge Ryan
$298
American Airlines
Mar 5
BTR7:08 amBaton Rouge Ryan
5h 35m
1 stop
STL12:43 pmLambert-St Louis
Mar 9
STL1:34 pmLambert-St Louis
8h 02m
1 stop
BTR9:36 pmBaton Rouge Ryan
$301

Delta flights from Baton Rouge to St. Louis

Our best Delta deals on Baton Rouge to St. Louis flight tickets
Delta
Mar 27
BTR1:36 pmBaton Rouge Ryan
4h 17m
1 stop
STL5:53 pmLambert-St Louis
Mar 30
STL4:21 pmLambert-St Louis
5h 42m
1 stop
BTR10:03 pmBaton Rouge Ryan
$257
Delta
Jun 18
BTR1:40 pmBaton Rouge Ryan
7h 09m
1 stop
STL8:49 pmLambert-St Louis
Jun 21
STL3:42 pmLambert-St Louis
6h 16m
1 stop
BTR9:58 pmBaton Rouge Ryan
$308
Delta
Apr 6
BTR7:05 pmBaton Rouge Ryan
4h 53m
1 stop
STL11:58 pmLambert-St Louis
Apr 8
STL12:04 pmLambert-St Louis
6h 18m
1 stop
BTR6:22 pmBaton Rouge Ryan
$338

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 February 23, 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

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 3/27

1:36 pm-5:53 pm

1 stop4h 17m

Lambert-St Louis

Mon 3/30

4:21 pm-10:03 pm

1 stop5h 42m

$257

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sat 3/7

5:00 am-9:21 am

1 stop4h 21m

Lambert-St Louis

Tue 3/10

6:00 am-1:13 pm

1 stop7h 13m

$265

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sat 3/7

5:00 am-9:21 am

1 stop4h 21m

Lambert-St Louis

Tue 3/10

6:25 am-3:32 pm

2 stops9h 07m

$270

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 4/15

5:00 am-12:22 pm

2 stops7h 22m

Lambert-St Louis

Mon 4/20

4:49 pm-9:10 pm

1 stop4h 21m

$286

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sat 3/7

5:00 am-11:01 am

1 stop6h 01m

Lambert-St Louis

Wed 3/11

11:46 am-5:26 pm

1 stop5h 40m

$292

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sat 3/7

5:00 am-11:01 am

1 stop6h 01m

Lambert-St Louis

Wed 3/11

8:00 am-4:03 pm

2 stops8h 03m

$298

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 3/5

7:08 am-12:43 pm

1 stop5h 35m

Lambert-St Louis

Mon 3/9

1:34 pm-9:36 pm

1 stop8h 02m

$301

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 6/18

1:40 pm-8:49 pm

1 stop7h 09m

Lambert-St Louis

Sun 6/21

3:42 pm-9:58 pm

1 stop6h 16m

$308

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 3/5

7:08 am-12:43 pm

1 stop5h 35m

Lambert-St Louis

Mon 3/9

1:34 pm-9:36 pm

1 stop8h 02m

$328

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Tue 3/10

7:08 am-1:16 pm

1 stop6h 08m

Lambert-St Louis

Sat 3/14

5:12 am-9:54 am

1 stop4h 42m

$332

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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 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 July is another great option to travel to St. Louis, with average flight prices from Baton Rouge averaging around $307.

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

As of February 2026, prices for Baton Rouge to St. Louis flights are approximately 46% cheaper 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 16m

Direct flights

None
The fastest flight from Baton Rouge to St. Louis takes 4h 16m
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

  • 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 16m 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
7.9
8,239 reviews
Search Delta flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,344 reviews
Search United Airlines flights
American AirlinesPriceFrom $248Free CancellationRating
7.2
11,344 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
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
St. Peters
Wentzville
Collinsville
Fenton
Alton
Farmington
Clayton
Edwardsville
Festus
Eureka
Litchfield
Glencoe
Grafton

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.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 3/25
Wed 4/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States