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$249+ Cheap flights from Baton Rouge to St. Louis (BTR - STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — STL
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap 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 August 14, 2025.

Round-trip from

$249
(Delta)

Popular in

March

Cheapest in

April

Average price

$330
From Baton Rouge Ryan to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($11 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
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Find 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 August 14, 2025.

This Delta deal was found by Cheapflights users on 8/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/266:50 pmBTR - STL
1 stop4h 34mDelta
Sat 9/277:10 amSTL - BTR
1 stop5h 42mDelta
Deal found 8/14$249
This American Airlines deal was found by Cheapflights users on 8/13. 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.
Fri 10/244:28 pmBTR - STL
1 stop6h 50mAmerican Airlines
Wed 10/296:00 amSTL - BTR
2 stops7h 47mAmerican Airlines
Deal found 8/13$254
This American Airlines deal was found by Cheapflights users on 8/13. 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.
Thu 8/2812:19 pmBTR - STL
1 stop7h 10mAmerican Airlines
Mon 9/15:15 amSTL - BTR
1 stop5h 00mAmerican Airlines
Deal found 8/13$259
This American Airlines deal was found by Cheapflights users on 8/13. 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.
Fri 9/266:41 pmBTR - STL
1 stop4h 09mAmerican Airlines
Sat 9/277:23 amSTL - BTR
2 stops8h 38mAmerican Airlines
Deal found 8/13$299
This Delta deal was found by Cheapflights users on 8/13. 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 9/910:20 amBTR - STL
1 stop4h 17mDelta
Wed 9/107:00 amSTL - BTR
1 stop6h 37mDelta
Deal found 8/13$319
This Delta deal was found by Cheapflights users on 8/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/154:38 pmBTR - STL
1 stop6h 36mDelta
Thu 8/219:17 amSTL - BTR
1 stop6h 36mDelta
Deal found 8/14$324
This American Airlines deal was found by Cheapflights users on 8/13. 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 9/912:15 pmBTR - STL
2 stops8h 17mAmerican Airlines
Wed 9/109:56 amSTL - BTR
2 stops8h 07mAmerican Airlines
Deal found 8/13$329
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Sat 10/1112:25 pmBTR - STL
2 stops8h 01mAmerican Airlines
Mon 10/135:11 amSTL - BTR
1 stop5h 26mAmerican Airlines
Deal found 8/14$357
This United Airlines deal was found by Cheapflights users on 8/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/289:45 amBTR - STL
1 stop4h 41mUnited Airlines
Mon 9/16:35 amSTL - BTR
2 stops8h 47mUnited Airlines
Deal found 8/13$375
This United Airlines deal was found by Cheapflights users on 8/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:00 amBTR - STL
2 stops9h 27mUnited Airlines
Sat 9/2712:25 pmSTL - BTR
2 stops10h 57mUnited Airlines
Deal found 8/14$388
This United Airlines deal was found by Cheapflights users on 8/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/154:02 pmBTR - STL
1 stop6h 19mUnited Airlines
Thu 8/216:35 amSTL - BTR
2 stops8h 47mUnited Airlines
Deal found 8/14$428
This United Airlines deal was found by Cheapflights users on 8/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/512:05 pmBTR - STL
2 stops11h 39mUnited Airlines
Mon 9/153:20 pmSTL - BTR
2 stops8h 04mUnited Airlines
Deal found 8/14$432

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 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

Baton Rouge

Fly to

St. Louis

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

5:20 am-10:37 am

1 stop5h 17m

$249

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sat 10/11

1:06 pm-6:02 pm

1 stop4h 56m

Lambert-St Louis

Mon 10/13

9:10 am-2:55 pm

1 stop5h 45m

$249

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 9/26

4:39 pm-9:15 pm

1 stop4h 36m

Lambert-St Louis

Sat 9/27

3:55 pm-10:12 pm

1 stop6h 17m

$249

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 9/12

4:39 pm-11:24 pm

1 stop6h 45m

Lambert-St Louis

Sun 9/14

6:01 am-12:52 pm

1 stop6h 51m

$249

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 9/5

10:20 am-2:37 pm

1 stop4h 17m

Lambert-St Louis

Mon 9/15

1:26 pm-6:06 pm

1 stop4h 40m

$249

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 8/29

12:19 pm-7:29 pm

1 stop7h 10m

Lambert-St Louis

Tue 9/2

3:43 pm-11:01 pm

1 stop7h 18m

$259

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 8/28

12:19 pm-7:29 pm

1 stop7h 10m

Lambert-St Louis

Mon 9/1

5:15 am-10:15 am

1 stop5h 00m

$259

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 9/26

6:41 pm-10:50 pm

1 stop4h 09m

Lambert-St Louis

Sat 9/27

7:23 am-4:01 pm

2 stops8h 38m

$299

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 10/9

6:21 pm-11:49 pm

1 stop5h 28m

Lambert-St Louis

Mon 10/20

5:30 am-10:47 am

1 stop5h 17m

$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

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

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, August is the cheapest month in which you can book a flight from Baton Rouge to St. Louis (average of $311). Flying from Baton Rouge to St. Louis in March is currently the most expensive (average of $356). 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.

What is the cheapest time of day to fly from BTR to STL?

Find hourly flight availability from Baton Rouge to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 15% on flights from Baton Rouge to St. Louis by exploring options for tickets in the evening.

How much does it cost to fly round-trip from Baton Rouge to St. Louis?

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 August 14, 2025.
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
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • 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 United Airlines and American Airlines, with the lowest prices starting at $248 and $253, respectively. You may be able to fly from Baton Rouge to St. Louis for 29% 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, August is the cheapest month in which you can book a flight from Baton Rouge to St. Louis (average of $311). Flying from Baton Rouge to St. Louis in March is currently the most expensive (average of $356). 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
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$247Average$304FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$392FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$253Average$328FlexibilityNo cancel feeOn-time71%

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