HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$159+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — STL
May 9 — May 161
Sat 5/9
Sat 5/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Baton Rouge to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 9, 2026.

This American Airlines deal was found by Cheapflights users on 4/7. 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 5/54:53 pm
BTR
-
STL
1 stop6h 06m
American Airlines
Tue 5/123:24 pm
STL
-
BTR
1 stop5h 21m
American Airlines
Deal found 4/7$315
This Delta deal was found by Cheapflights users on 4/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:04 pm
BTR
-
STL
1 stop4h 55m
Delta
Thu 6/47:05 am
STL
-
BTR
1 stop5h 44m
Delta
Deal found 4/9$317
This American Airlines deal was found by Cheapflights users on 4/5. 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.
Mon 4/206:32 pm
BTR
-
STL
1 stop4h 27m
American Airlines
Fri 4/245:20 am
STL
-
BTR
1 stop4h 42m
American Airlines
Deal found 4/5$325
This Delta deal was found by Cheapflights users on 4/7. 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.
Sat 6/134:07 pm
BTR
-
STL
1 stop5h 33m
Delta
Fri 6/199:21 am
STL
-
BTR
1 stop5h 51m
Delta
Deal found 4/7$331
This Delta deal was found by Cheapflights users on 4/7. 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 5/227:04 pm
BTR
-
STL
1 stop4h 55m
Delta
Mon 5/255:20 pm
STL
-
BTR
1 stop4h 40m
Delta
Deal found 4/7$337
This American Airlines deal was found by Cheapflights users on 4/9. 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.
Fri 4/246:32 pm
BTR
-
STL
1 stop4h 27m
American Airlines
Tue 4/288:54 am
STL
-
BTR
2 stops9h 08m
American Airlines
Deal found 4/9$350
This United Airlines deal was found by Cheapflights users on 4/7. 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.
Wed 5/275:00 am
BTR
-
STL
1 stop5h 07m
United Airlines
Wed 7/86:00 am
STL
-
BTR
2 stops9h 34m
United Airlines
Deal found 4/7$351
This American Airlines deal was found by Cheapflights users on 4/4. 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
Wed 5/135:20 am
STL
-
BTR
1 stop4h 42m
American Airlines
Deal found 4/4$353
This Delta deal was found by Cheapflights users on 4/5. 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 4/144:00 pm
BTR
-
STL
1 stop5h 19m
Delta
Tue 4/211:02 pm
STL
-
BTR
1 stop5h 25m
Delta
Deal found 4/5$357
This American Airlines deal was found by Cheapflights users on 4/5. 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 4/146:32 pm
BTR
-
STL
1 stop4h 27m
American Airlines
Tue 4/218:54 am
STL
-
BTR
2 stops9h 08m
American Airlines
Deal found 4/5$362

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 April 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$315
(American Airlines)

One-way from

$159
(Delta)

Popular in

March

Cheapest in

January

Average price

$328
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. 0% potential increase in price ($2 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 9, 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

Tue 5/5

4:53 pm-10:59 pm

1 stop6h 06m

Lambert-St Louis

Tue 5/12

3:24 pm-8:45 pm

1 stop5h 21m

$315

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 5/27

5:00 am-10:07 am

1 stop5h 07m

Lambert-St Louis

Wed 7/8

6:14 am-1:29 pm

1 stop7h 15m

$315

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 7/16

10:25 am-4:14 pm

1 stop5h 49m

Lambert-St Louis

Mon 7/20

3:40 pm-9:56 pm

1 stop6h 16m

$317
Quickest round-trip

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Mon 6/1

7:04 pm-11:59 pm

1 stop4h 55m

Lambert-St Louis

Thu 6/4

7:05 am-12:49 pm

1 stop5h 44m

$317

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Mon 4/20

6:32 pm-10:59 pm

1 stop4h 27m

Lambert-St Louis

Fri 4/24

12:27 pm-9:25 pm

2 stops8h 58m

$330

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sat 6/13

4:07 pm-9:40 pm

1 stop5h 33m

Lambert-St Louis

Fri 6/19

9:21 am-3:12 pm

1 stop5h 51m

$331

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 4/24

6:32 pm-10:59 pm

1 stop4h 27m

Lambert-St Louis

Tue 4/28

8:54 am-6:02 pm

2 stops9h 08m

$350

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Mon 5/4

6:32 pm-10:59 pm

1 stop4h 27m

Lambert-St Louis

Wed 5/6

2:12 pm-9:25 pm

1 stop7h 13m

$380

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 5/27

11:30 am-8:30 pm

2 stops9h 00m

Lambert-St Louis

Wed 7/8

6:00 am-1:47 pm

2 stops7h 47m

$384

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sat 5/2

4:06 pm-10:30 pm

1 stop6h 24m

Lambert-St Louis

Tue 5/5

10:14 am-5:34 pm

1 stop7h 20m

$395

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

Showing 1-10 of 15 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 April.
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.

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 April 9, 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
8,392 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Overall

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
8,392 reviews
Delta
7.9
Good
8,392 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Overall

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
9,554 reviews
Delta
7.9
Good
8,392 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Overall

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
7.1
Good
11,560 reviews
Delta
7.9
Good
8,392 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Overall

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 5h 07m. Fly via American Airlines, United Airlines, or Delta 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 24% 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 April 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$247Average$307FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$368FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$248Average$328FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.