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$239+ 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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — STL
Jun 20 — Jun 271
Fri 6/20
Fri 6/27
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 June 15, 2025.

Round-trip from

$249
(Delta)

One-way from

$239
(Delta)

Popular in

March

Cheapest in

April

Average price

$331
From Baton Rouge Ryan to Lambert-St Louis
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One-way flight from Baton Rouge Ryan to Lambert-St Louis
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Highest demand for flights based on searches. 1% potential increase in price ($6 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).
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Average for round-trip flights in June 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 June 15, 2025.

This Delta deal was found by Cheapflights users on 6/14. 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.
Mon 7/217:00 pmBTR - STL
1 stop4h 53mDelta
Tue 7/297:00 amSTL - BTR
1 stop4h 35mDelta
Deal found 6/14$249
This American Airlines deal was found by Cheapflights users on 6/14. 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.
Wed 6/254:26 pmBTR - STL
1 stop6h 53mAmerican Airlines
Sun 6/295:37 amSTL - BTR
1 stop4h 41mAmerican Airlines
Deal found 6/14$284
This United Airlines deal was found by Cheapflights users on 6/13. 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.
Sat 6/214:02 pmBTR - STL
1 stop6h 25mUnited Airlines
Wed 7/95:00 amSTL - BTR
2 stops8h 18mUnited Airlines
Deal found 6/13$354

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 June 15, 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

Mon 7/21

7:00 pm-11:53 pm

1 stop4h 53m

Lambert-St Louis

Tue 7/29

7:00 am-11:35 am

1 stop4h 35m

$249

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 6/25

4:26 pm-11:19 pm

1 stop6h 53m

Lambert-St Louis

Sun 6/29

5:37 am-10:18 am

1 stop4h 41m

$284

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sun 7/20

4:02 pm-10:15 pm

1 stop6h 13m

Lambert-St Louis

Mon 7/28

8:25 am-3:27 pm

1 stop7h 02m

$349

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sun 7/13

7:00 pm-11:53 pm

1 stop4h 53m

$239

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sun 7/13

2:00 pm-10:45 pm

2 stops8h 45m

$415

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

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 June 15, 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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 June 15, 2025.
See what other customers who have flown with Delta, United Airlines and American Airlines from Baton Rouge to St. Louis have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

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
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

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
8,797 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

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
7,961 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

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 $249. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $284 and $349, respectively. You may be able to fly from Baton Rouge to St. Louis for 30% 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 Baton Rouge?

Book flights to Baton Rouge if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Festus
Alton
Farmington

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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 June 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$248Average$338FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$392FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$253Average$334FlexibilityNo cancel feeOn-time71%

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