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Cheap flights from St. Louis to Baton Rouge from $129

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Baton Rouge departing on 4/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Baton Rouge

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:20 am - 10:02 am
STL
-
BTR
4h 42m
1 stop
American Airlines Logo
6:32 pm - 10:59 pm
BTR
-
STL
4h 27m
1 stop
$257American Airlines
Tue, Apr 28 - Tue, Apr 28
American Airlines Logo
12:25 pm - 8:45 pm
STL
-
BTR
8h 20m
2 stops
American Airlines Logo
4:53 pm - 10:59 pm
BTR
-
STL
6h 06m
1 stop
$262American Airlines
Tue, Apr 28 - Wed, Apr 29
American Airlines Logo
2:06 pm - 7:26 pm
STL
-
BTR
5h 20m
1 stop
American Airlines Logo
6:18 pm - 11:22 pm
BTR
-
STL
5h 04m
1 stop
$265American Airlines
Tue, Feb 24 - Tue, Mar 3
United Airlines Logo
6:00 am - 1:18 pm
STL
-
BTR
7h 18m
1 stop
United Airlines Logo
5:00 am - 9:21 am
BTR
-
STL
4h 21m
1 stop
$269United Airlines
Wed, Mar 4 - Wed, Mar 11
American Airlines Logo
5:12 am - 9:54 am
STL
-
BTR
4h 42m
1 stop
American Airlines Logo
4:27 pm - 11:48 pm
BTR
-
STL
7h 21m
2 stops
$270American Airlines
Tue, Feb 24 - Tue, Mar 3
United Airlines Logo
7:41 am - 5:32 pm
STL
-
BTR
9h 51m
2 stops
United Airlines Logo
5:00 am - 9:21 am
BTR
-
STL
4h 21m
1 stop
$274United Airlines
Wed, Mar 4 - Wed, Mar 11
American Airlines Logo
9:23 am - 5:46 pm
STL
-
BTR
8h 23m
2 stops
American Airlines Logo
4:27 pm - 11:48 pm
BTR
-
STL
7h 21m
2 stops
$275American Airlines
Tue, Feb 24 - Tue, Mar 3
United Airlines Logo
7:41 am - 5:32 pm
STL
-
BTR
9h 51m
2 stops
United Airlines Logo
5:00 am - 12:27 pm
BTR
-
STL
7h 27m
2 stops
$279United Airlines
Wed, Mar 4 - Wed, Mar 11
American Airlines Logo
5:12 am - 9:54 am
STL
-
BTR
4h 42m
1 stop
American Airlines Logo
5:00 am - 1:50 pm
BTR
-
STL
8h 50m
2 stops
$284American Airlines
Wed, Feb 18 - Sat, Feb 21
American Airlines Logo
11:46 am - 5:26 pm
STL
-
BTR
5h 40m
1 stop
American Airlines Logo
7:08 am - 1:16 pm
BTR
-
STL
6h 08m
1 stop
$287American Airlines
Sat, Feb 21 - Wed, Feb 25

American Airlines flights from St. Louis to Baton Rouge

Our best American Airlines deals on St. Louis to Baton Rouge flight tickets
American Airlines
Apr 28
STL7:12 amLambert-St Louis
6h 51m
1 stop
BTR2:03 pmBaton Rouge Ryan
Apr 29
BTR5:40 amBaton Rouge Ryan
5h 57m
1 stop
STL11:37 amLambert-St Louis
$257
American Airlines
Apr 28
STL12:25 pmLambert-St Louis
8h 20m
2 stops
BTR8:45 pmBaton Rouge Ryan
Apr 29
BTR4:53 pmBaton Rouge Ryan
6h 06m
1 stop
STL10:59 pmLambert-St Louis
$262
American Airlines
Feb 24
STL2:06 pmLambert-St Louis
5h 20m
1 stop
BTR7:26 pmBaton Rouge Ryan
Mar 3
BTR6:18 pmBaton Rouge Ryan
5h 04m
1 stop
STL11:22 pmLambert-St Louis
$265

United Airlines flights from St. Louis to Baton Rouge

Our best United Airlines deals on St. Louis to Baton Rouge flight tickets
United Airlines
Mar 4
STL6:00 amLambert-St Louis
7h 18m
1 stop
BTR1:18 pmBaton Rouge Ryan
Mar 11
BTR5:00 amBaton Rouge Ryan
4h 21m
1 stop
STL9:21 amLambert-St Louis
$269
United Airlines
Mar 4
STL7:41 amLambert-St Louis
9h 51m
2 stops
BTR5:32 pmBaton Rouge Ryan
Mar 11
BTR5:00 amBaton Rouge Ryan
4h 21m
1 stop
STL9:21 amLambert-St Louis
$274
United Airlines
Mar 4
STL7:41 amLambert-St Louis
9h 51m
2 stops
BTR5:32 pmBaton Rouge Ryan
Mar 11
BTR5:00 amBaton Rouge Ryan
7h 27m
2 stops
STL12:27 pmLambert-St Louis
$279

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Baton Rouge 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, momondo users made 832,500 searches. Data last updated February 7, 2026.
Use the filters below to find and compare flights from St. Louis to Baton Rouge that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Tue 4/28

5:20 am-10:02 am

1 stop4h 42m

Baton Rouge Ryan

Tue 4/28

6:32 pm-10:59 pm

1 stop4h 27m

$257

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Tue 4/28

12:25 pm-8:45 pm

2 stops8h 20m

Baton Rouge Ryan

Wed 4/29

4:53 pm-10:59 pm

1 stop6h 06m

$262

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Tue 2/24

2:06 pm-7:26 pm

1 stop5h 20m

Baton Rouge Ryan

Tue 3/3

6:18 pm-11:22 pm

1 stop5h 04m

$265

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Wed 3/4

6:00 am-1:18 pm

1 stop7h 18m

Baton Rouge Ryan

Wed 3/11

5:00 am-9:21 am

1 stop4h 21m

$269

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Tue 2/24

5:12 am-9:54 am

1 stop4h 42m

Baton Rouge Ryan

Tue 3/3

4:27 pm-11:48 pm

2 stops7h 21m

$270

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Wed 3/4

7:41 am-5:32 pm

2 stops9h 51m

Baton Rouge Ryan

Wed 3/11

5:00 am-9:21 am

1 stop4h 21m

$274

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Tue 2/24

9:23 am-5:46 pm

2 stops8h 23m

Baton Rouge Ryan

Tue 3/3

4:27 pm-11:48 pm

2 stops7h 21m

$275

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Wed 3/4

7:41 am-5:32 pm

2 stops9h 51m

Baton Rouge Ryan

Wed 3/11

5:00 am-12:27 pm

2 stops7h 27m

$279

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Wed 2/18

5:12 am-9:54 am

1 stop4h 42m

Baton Rouge Ryan

Sat 2/21

5:00 am-1:50 pm

2 stops8h 50m

$284

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Sat 2/21

11:46 am-5:26 pm

1 stop5h 40m

Baton Rouge Ryan

Wed 2/25

7:08 am-1:16 pm

1 stop6h 08m

$287

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Baton Rouge from

How to get the cheapest flight ticket from St. Louis to Baton Rouge

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Baton Rouge?

In general, October is the cheapest month to fly from St. Louis to Baton Rouge. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $248. If you’re not able to fly to Baton Rouge in October, then July is your next best option. Flight prices from St. Louis to Baton Rouge during July average around $257.

When to book flights from St. Louis to Baton Rouge

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Baton Rouge according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Baton Rouge (STL to BTR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Baton Rouge

Fastest flight time

4h 25m

Direct flights

None
The fastest flight from St. Louis to Baton Rouge takes 4h 25m
There are no direct flights from St. Louis to Baton Rouge. There are no popular flight routes from St. Louis to Baton Rouge.
Search flight deals

  • How far is Lambert-St Louis to Baton Rouge Ryan by plane?

    The distance between Lambert-St Louis and Baton Rouge Ryan is about 567.0 mi. Flights usually cover this in 4h 25m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Baton Rouge Ryan Airport?

    Prices for flights from Lambert-St Louis Airport to Baton Rouge Ryan Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Baton Rouge Ryan Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Baton Rouge Ryan Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Baton Rouge Ryan Airport.

  • What documentation or ID do you need to fly to Baton Rouge Ryan Airport?

    The travel and health documents required for your trip to Baton Rouge Ryan Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Baton Rouge Ryan Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from St. Louis to Baton Rouge?

Best airlines flying from St. Louis to Baton Rouge

Compare and see reviews for airlines that fly from St. Louis to Baton Rouge with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $162Free CancellationRating
7.9
8,159 reviews
Search Delta flights
American AirlinesPriceFrom $189Free CancellationRating
7.2
11,246 reviews
Search American Airlines flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,244 reviews
Search United Airlines flights

Traveling to a place near Baton Rouge?

Book flights to Baton Rouge if you plan to visit one of these locations
Denham Springs
McComb
Port Allen
Saint Francisville

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Baton Rouge?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Baton Rouge from St. Louis.

Can I find flights from St. Louis to Baton Rouge with flexible booking policies on momondo?

All flight searches from St. Louis to Baton Rouge on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from St. Louis to Baton Rouge?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Baton Rouge.

I’m not ready to book a flight from St. Louis to Baton Rouge right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Baton Rouge flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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