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Cheap flights from St. Louis to Baton Rouge from $246

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 12/20. 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
3:30 pm - 10:37 pm
STL
-
BTR
7h 07m1 stop
American Airlines Logo
4:21 pm - 11:44 pm
BTR
-
STL
7h 23m2 stops
$269American Airlines
Thu, Jan 1 - Mon, Jan 5
Delta Logo
5:13 pm - 9:53 pm
STL
-
BTR
4h 40m1 stop
Delta Logo
5:51 pm - 11:39 pm
BTR
-
STL
5h 48m1 stop
$274Delta
Fri, Jan 2 - Tue, Jan 6
United Airlines Logo
6:00 am - 1:07 pm
STL
-
BTR
7h 07m1 stop
United Airlines Logo
1:55 pm - 10:58 pm
BTR
-
STL
9h 03m2 stops
$279United Airlines
Fri, Jan 2 - Tue, Jan 6
United Airlines Logo
8:05 am - 7:23 pm
STL
-
BTR
11h 18m2 stops
United Airlines Logo
1:55 pm - 10:58 pm
BTR
-
STL
9h 03m2 stops
$284United Airlines
Fri, Jan 2 - Tue, Jan 6
United Airlines Logo
10:30 am - 5:32 pm
STL
-
BTR
7h 02m1 stop
United Airlines Logo
3:30 pm - 10:00 pm
BTR
-
STL
6h 30m1 stop
$294United Airlines
Sat, Jan 3 - Tue, Jan 6
Delta Logo
1:22 pm - 7:48 pm
STL
-
BTR
6h 26m1 stop
Delta Logo
5:51 pm - 11:39 pm
BTR
-
STL
5h 48m1 stop
$324Delta
Thu, Jan 1 - Mon, Jan 5
United Airlines Logo
10:07 am - 3:58 pm
STL
-
BTR
5h 51m1 stop
United Airlines Logo
5:15 pm - 10:00 pm
BTR
-
STL
4h 45m1 stop
$339United Airlines
Tue, Jan 6 - Sat, Jan 10
United Airlines Logo
11:20 am - 7:33 pm
STL
-
BTR
8h 13m2 stops
United Airlines Logo
5:15 pm - 10:00 pm
BTR
-
STL
4h 45m1 stop
$344United Airlines
Tue, Jan 6 - Sat, Jan 10
American Airlines Logo
6:00 am - 4:04 pm
STL
-
BTR
10h 04m2 stops
American Airlines Logo
2:18 pm - 11:44 pm
BTR
-
STL
9h 26m2 stops
$359American Airlines
Thu, Jan 1 - Mon, Jan 5
United Airlines Logo
10:07 am - 3:58 pm
STL
-
BTR
5h 51m1 stop
United Airlines Logo
5:15 pm - 10:00 pm
BTR
-
STL
4h 45m1 stop
$414United Airlines
Fri, Jan 16 - Mon, Jan 19

American Airlines flights from St. Louis to Baton Rouge

Our best American Airlines deals on St. Louis to Baton Rouge flight tickets
American Airlines
Jan 17
STL5:04 pmLambert-St Louis
5h 52m
1 stop
BTR10:56 pmBaton Rouge Ryan
Jan 18
BTR7:07 amBaton Rouge Ryan
7h 57m
1 stop
STL3:04 pmLambert-St Louis
$209
Find similar
American Airlines
Jan 17
STL11:05 amLambert-St Louis
9h 54m
2 stops
BTR8:59 pmBaton Rouge Ryan
Jan 18
BTR7:07 amBaton Rouge Ryan
7h 57m
1 stop
STL3:04 pmLambert-St Louis
$214
Find similar
American Airlines
Jan 1
STL3:30 pmLambert-St Louis
7h 07m
1 stop
BTR10:37 pmBaton Rouge Ryan
Jan 5
BTR4:21 pmBaton Rouge Ryan
7h 23m
2 stops
STL11:44 pmLambert-St Louis
$269
Find similar

United Airlines flights from St. Louis to Baton Rouge

Our best United Airlines deals on St. Louis to Baton Rouge flight tickets
United Airlines
Jan 2
STL6:00 amLambert-St Louis
7h 07m
1 stop
BTR1:07 pmBaton Rouge Ryan
Jan 6
BTR1:55 pmBaton Rouge Ryan
9h 03m
2 stops
STL10:58 pmLambert-St Louis
$279
Find similar
United Airlines
Jan 2
STL8:05 amLambert-St Louis
11h 18m
2 stops
BTR7:23 pmBaton Rouge Ryan
Jan 6
BTR1:55 pmBaton Rouge Ryan
9h 03m
2 stops
STL10:58 pmLambert-St Louis
$284
Find similar
United Airlines
Jan 3
STL10:30 amLambert-St Louis
7h 02m
1 stop
BTR5:32 pmBaton Rouge Ryan
Jan 6
BTR3:30 pmBaton Rouge Ryan
6h 30m
1 stop
STL10:00 pmLambert-St Louis
$294
Find similar

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 December 18, 2025.
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

Thu 1/1

3:30 pm-10:37 pm

1 stop7h 07m

Baton Rouge Ryan

Mon 1/5

4:21 pm-11:44 pm

2 stops7h 23m

$269

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Fri 1/2

5:13 pm-9:53 pm

1 stop4h 40m

Baton Rouge Ryan

Tue 1/6

5:51 pm-11:39 pm

1 stop5h 48m

$274

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Fri 1/2

6:00 am-1:07 pm

1 stop7h 07m

Baton Rouge Ryan

Tue 1/6

1:55 pm-10:58 pm

2 stops9h 03m

$279

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Fri 1/2

8:05 am-7:23 pm

2 stops11h 18m

Baton Rouge Ryan

Tue 1/6

1:55 pm-10:58 pm

2 stops9h 03m

$284

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Sat 1/3

10:30 am-5:32 pm

1 stop7h 02m

Baton Rouge Ryan

Tue 1/6

3:30 pm-10:00 pm

1 stop6h 30m

$294

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Thu 1/1

1:22 pm-7:48 pm

1 stop6h 26m

Baton Rouge Ryan

Mon 1/5

5:51 pm-11:39 pm

1 stop5h 48m

$324

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Tue 1/6

10:07 am-3:58 pm

1 stop5h 51m

Baton Rouge Ryan

Sat 1/10

5:15 pm-10:00 pm

1 stop4h 45m

$339

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Tue 1/6

11:20 am-7:33 pm

2 stops8h 13m

Baton Rouge Ryan

Sat 1/10

5:15 pm-10:00 pm

1 stop4h 45m

$344

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Thu 1/1

6:00 am-4:04 pm

2 stops10h 04m

Baton Rouge Ryan

Mon 1/5

2:18 pm-11:44 pm

2 stops9h 26m

$359

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Fri 1/16

10:07 am-3:58 pm

1 stop5h 51m

Baton Rouge Ryan

Mon 1/19

5:15 pm-10:00 pm

1 stop4h 45m

$414

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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 typical price of a round-trip flight between St. Louis and Baton Rouge?

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.

What is the cheapest day to depart on your flight to Baton Rouge?

The cheapest day to depart from St. Louis to Baton Rouge is on a Wednesday. Travelers who choose to depart for Baton Rouge on a Wednesday will often find tickets for as low as $271. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $420. These prices are subject to change though, so be sure to set up a Price Alert for flights to Baton Rouge.

What is the cheapest time of day to depart on your flight to Baton Rouge?

Our most recent data shows that the best time of day to fly to Baton Rouge is at noon. Flights from St. Louis to Baton Rouge during this time can be as low as $318. In contrast, the most expensive time of day to depart to Baton Rouge is in the afternoon when prices are around $464.

How have St. Louis to Baton Rouge flight prices changed over time?

As of December 2025, prices for St. Louis to Baton Rouge flights are approximately 53% cheaper when compared to flights at the same time last year.

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

5h 17m

Direct flights

None
The fastest flight from St. Louis to Baton Rouge takes 5h 17m
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 5h 17m, 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
American AirlinesPriceFrom $189Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
DeltaPriceFrom $232Free CancellationRating
7.9
8,005 reviews
Search Delta flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,091 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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