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St. Louis

$149+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — STL
Apr 16 — Apr 231
Thu 4/16
Thu 4/23
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 March 17, 2026.

This American Airlines deal was found by Cheapflights users on 3/14. 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 5/86:32 pm
BTR
-
STL
1 stop4h 27m
American Airlines
Sun 5/105:20 am
STL
-
BTR
1 stop4h 42m
American Airlines
Deal found 3/14$301
This American Airlines deal was found by Cheapflights users on 3/13. 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.
Wed 4/15:00 am
BTR
-
STL
1 stop5h 59m
American Airlines
Wed 4/14:13 pm
STL
-
BTR
1 stop6h 26m
American Airlines
Deal found 3/13$305
This American Airlines deal was found by Cheapflights users on 3/15. 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 4/112:33 pm
BTR
-
STL
2 stops9h 13m
American Airlines
Sun 4/125:20 am
STL
-
BTR
1 stop4h 42m
American Airlines
Deal found 3/15$310
This Delta deal was found by Cheapflights users on 3/13. 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.
Tue 3/316:07 am
BTR
-
STL
1 stop5h 02m
Delta
Sat 4/46:00 am
STL
-
BTR
1 stop6h 51m
Delta
Deal found 3/13$325
This Delta deal was found by Cheapflights users on 3/12. 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 9/176:00 am
BTR
-
STL
1 stop6h 53m
Delta
Sun 9/209:00 am
STL
-
BTR
1 stop5h 47m
Delta
Deal found 3/12$337
This American Airlines deal was found by Cheapflights users on 3/15. 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 3/274:28 pm
BTR
-
STL
1 stop6h 30m
American Airlines
Sun 3/295:12 am
STL
-
BTR
1 stop4h 42m
American Airlines
Deal found 3/15$341
This American Airlines deal was found by Cheapflights users on 3/15. 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 4/107:06 am
BTR
-
STL
2 stops9h 35m
American Airlines
Sun 4/125:20 am
STL
-
BTR
1 stop4h 42m
American Airlines
Deal found 3/15$362
This United Airlines deal was found by Cheapflights users on 3/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:08 pm
BTR
-
STL
1 stop4h 20m
United Airlines
Wed 4/1510:09 am
STL
-
BTR
1 stop7h 24m
United Airlines
Deal found 3/12$367
This American Airlines deal was found by Cheapflights users on 3/13. 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.
Tue 3/317:08 am
BTR
-
STL
1 stop6h 08m
American Airlines
Tue 3/316:08 pm
STL
-
BTR
1 stop4h 31m
American Airlines
Deal found 3/13$375

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 March 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$301
(American Airlines)

One-way from

$149
(Delta)

Popular in

March

Cheapest in

January

Average price

$368
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
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 17, 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
Quickest round-trip

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 5/8

6:32 pm-10:59 pm

1 stop4h 27m

Lambert-St Louis

Sun 5/10

5:20 am-10:02 am

1 stop4h 42m

$301

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sat 4/11

4:53 pm-10:59 pm

1 stop6h 06m

Lambert-St Louis

Sun 4/12

5:20 am-10:02 am

1 stop4h 42m

$305

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 4/3

7:05 pm-11:58 pm

1 stop4h 53m

Lambert-St Louis

Sat 4/4

6:00 am-12:51 pm

1 stop6h 51m

$325

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 4/10

7:06 am-4:41 pm

2 stops9h 35m

Lambert-St Louis

Sun 4/12

5:20 am-10:02 am

1 stop4h 42m

$362

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sat 4/11

9:20 am-4:08 pm

1 stop6h 48m

Lambert-St Louis

Wed 4/15

11:15 am-10:45 pm

2 stops11h 30m

$372

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 3/27

4:28 pm-10:58 pm

1 stop6h 30m

Lambert-St Louis

Sun 3/29

5:12 am-9:54 am

1 stop4h 42m

$377
Cheapest one-way

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 4/15

4:00 pm-9:19 pm

1 stop5h 19m

$149

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 4/15

4:53 pm-10:59 pm

1 stop6h 06m

$149
Quickest one-way

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 3/26

1:36 pm-5:53 pm

1 stop4h 17m

$199

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 3/26

2:00 pm-10:59 pm

2 stops8h 59m

$376

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 11 resultsSorted by cheapest first
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 March.
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 March 17, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican 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
8,288 reviews

Food

7.2

Comfort

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Entertainment

7.8

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
8,288 reviews
Delta
7.9
Good
8,288 reviews

Food

7.2

Comfort

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Entertainment

7.8

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
9,431 reviews
Delta
7.9
Good
8,288 reviews

Food

7.2

Comfort

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Entertainment

7.8

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
7.1
Good
11,468 reviews
Delta
7.9
Good
8,288 reviews

Food

7.2

Comfort

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Entertainment

7.8

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 27m. Fly via American Airlines, Delta, or United 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 23% 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
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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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 March 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$247Average$318FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$348FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$248Average$323FlexibilityNo cancel feeOn-time71%

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