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$129+ Cheap flights from Baton Rouge to St. Louis (BTR - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — STL
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
1 adult, Economy
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Cheap flight deals from Baton Rouge to St. Louis

Cheapest flights from Baton Rouge to St. Louis
Explore the most affordable flight options available from Baton Rouge to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 12, 2026.

This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/265:00 am
BTR
-
STL
1 stop4h 21m
United Airlines
Tue 3/316:00 am
STL
-
BTR
1 stop5h 21m
United Airlines
Deal found 2/9$257
This American Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/55:57 pm
BTR
-
STL
1 stop5h 01m
American Airlines
Mon 3/95:12 am
STL
-
BTR
1 stop4h 42m
American Airlines
Deal found 2/9$265
This American Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/274:27 pm
BTR
-
STL
2 stops7h 08m
American Airlines
Tue 3/311:46 am
STL
-
BTR
1 stop4h 11m
American Airlines
Deal found 2/11$270
This American Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2311:22 am
BTR
-
STL
1 stop7h 09m
American Airlines
Thu 5/287:06 am
STL
-
BTR
1 stop6h 43m
American Airlines
Deal found 2/11$283
This American Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:08 am
BTR
-
STL
1 stop5h 35m
American Airlines
Sat 3/79:15 am
STL
-
BTR
1 stop6h 46m
American Airlines
Deal found 2/11$287
This Delta deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:09 pm
BTR
-
STL
1 stop4h 27m
Delta
Mon 3/96:00 am
STL
-
BTR
1 stop6h 51m
Delta
Deal found 2/12$299
This American Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/265:00 am
BTR
-
STL
1 stop6h 01m
American Airlines
Mon 3/21:34 pm
STL
-
BTR
1 stop8h 02m
American Airlines
Deal found 2/10$332

Find flight deals from Baton Rouge to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Baton Rouge (BTR) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$257
(United Airlines)

One-way from

$129
(United Airlines)

Popular in

March

Cheapest in

January

Average price

$348
Provider with most accurate pricing for Baton Rouge Ryan-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Baton Rouge Ryan-Lambert-St Louis flights.
Search Deals
From Baton Rouge Ryan to Lambert-St Louis
Search Deals
One-way flight from Baton Rouge Ryan to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated February 12, 2026.
Use the filters below to find and compare flights from Baton Rouge to St. Louis that are best for you.

Fly from

Baton Rouge

Fly to

St. Louis

Route

Depart

Return

Price

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 3/26

5:00 am-9:21 am

1 stop4h 21m

Lambert-St Louis

Tue 3/31

6:00 am-11:21 am

1 stop5h 21m

$257

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 4/17

6:08 pm-10:27 pm

1 stop4h 19m

Lambert-St Louis

Sun 4/19

6:00 am-11:18 am

1 stop5h 18m

$257

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 2/27

4:27 pm-11:35 pm

2 stops7h 08m

Lambert-St Louis

Tue 3/3

11:46 am-3:57 pm

1 stop4h 11m

$270

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 3/5

7:08 am-12:43 pm

1 stop5h 35m

Lambert-St Louis

Sat 3/7

8:00 am-4:01 pm

2 stops8h 01m

$292

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 3/5

7:09 pm-11:36 pm

1 stop4h 27m

Lambert-St Louis

Mon 3/9

6:00 am-12:51 pm

1 stop6h 51m

$299

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sat 3/7

5:00 pm-11:36 pm

1 stop6h 36m

Lambert-St Louis

Mon 3/9

6:00 am-12:51 pm

1 stop6h 51m

$309

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Tue 4/28

6:09 pm-10:28 pm

1 stop4h 19m

$129

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Tue 4/28

7:06 am-4:41 pm

2 stops9h 35m

$134

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 2/20

4:27 pm-11:35 pm

2 stops7h 08m

$174

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 2/19

7:09 pm-11:36 pm

1 stop4h 27m

$192

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 15 results
1
2

Compare providers for flights from Baton Rouge to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baton Rouge to St. Louis in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Baton Rouge-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Baton Rouge-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Baton Rouge-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baton Rouge-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Baton Rouge-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Baton Rouge to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Baton Rouge with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Baton Rouge to St. Louis

What is the cheapest month to book a flight from Baton Rouge to St. Louis?

Currently, December is the cheapest month in which you can book a flight from Baton Rouge to St. Louis (average of $75). Flying from Baton Rouge to St. Louis in August is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated February 12, 2026.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Baton Rouge to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,187 reviews

Food

7.2

Crew

8.5

Entertainment

7.8

Overall

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,187 reviews
Delta
7.9
Good
8,187 reviews

Food

7.2

Crew

8.5

Entertainment

7.8

Overall

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,283 reviews
Delta
7.9
Good
8,187 reviews

Food

7.2

Crew

8.5

Entertainment

7.8

Overall

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,275 reviews
Delta
7.9
Good
8,187 reviews

Food

7.2

Crew

8.5

Entertainment

7.8

Overall

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Baton Rouge to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Baton Rouge to St. Louis?

    There are many flights that can get you from Baton Rouge to St. Louis in 4h 21m. Fly via United Airlines or American Airlines to get the fastest option. There are 569 mi between Baton Rouge and St. Louis. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Baton Rouge to St. Louis round-trip?

    Flying on Delta is currently your cheapest option to St. Louis, with prices starting at $247. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $248 and $248, respectively. You may be able to fly from Baton Rouge to St. Louis for 27% less than the average price by searching for these airlines.

  • Can I find deals for flights from Baton Rouge to St. Louis that include hotel bookings?

    Yes. In addition to deals on Baton Rouge to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baton Rouge to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baton Rouge to St. Louis.

  • Can I find deals for business class flights from Baton Rouge to St. Louis?

    Yes. Cheapflights offers flight deals from Baton Rouge to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Baton Rouge to St. Louis?

    Currently, December is the cheapest month in which you can book a flight from Baton Rouge to St. Louis (average of $75). Flying from Baton Rouge to St. Louis in August is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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Top 3 airlines flying from Baton Rouge to St. Louis

Discover the top 3 airlines that operate flights from Baton Rouge to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$247Average$318FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$407FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$248Average$328FlexibilityNo cancel feeOn-time71%

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