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Cheap flights from St. Louis to Baton Rouge from $220

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 10/1. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Baton Rouge

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
3:12 pm - 9:16 pmSTL  Lambert-St Louis-BTR Baton Rouge Ryan
6h 04m1 stop Houston George Bush Intcntl
United Airlines Logo
5:20 am - 10:10 amBTR  Baton Rouge Ryan-STL Lambert-St Louis
4h 50m1 stop Houston George Bush Intcntl
$317United Airlines
Fri, Oct 2 - Tue, Oct 6
United Airlines Logo
3:12 pm - 9:16 pmSTL  Lambert-St Louis-BTR Baton Rouge Ryan
6h 04m1 stop Houston George Bush Intcntl
United Airlines Logo
4:07 pm - 10:30 pmBTR  Baton Rouge Ryan-STL Lambert-St Louis
6h 23m1 stop Houston George Bush Intcntl
$317United Airlines
Thu, Oct 1 - Sat, Oct 10
Delta Logo
5:37 pm - 10:02 pmSTL  Lambert-St Louis-BTR Baton Rouge Ryan
4h 25m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:59 pm - 11:56 pmBTR  Baton Rouge Ryan-STL Lambert-St Louis
4h 57m1 stop Atlanta Hartsfield-Jackson
$319Delta
Thu, Dec 10 - Thu, Dec 17
Delta Logo
3:44 pm - 8:46 pmSTL  Lambert-St Louis-BTR Baton Rouge Ryan
5h 02m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:03 am - 12:32 pmBTR  Baton Rouge Ryan-STL Lambert-St Louis
6h 29m1 stop Atlanta Hartsfield-Jackson
$319Delta
Sat, Sep 5 - Fri, Sep 11
United Airlines Logo
3:12 pm - 9:16 pmSTL  Lambert-St Louis-BTR Baton Rouge Ryan
6h 04m1 stop Houston George Bush Intcntl
United Airlines Logo
5:20 am - 10:10 amBTR  Baton Rouge Ryan-STL Lambert-St Louis
4h 50m1 stop Houston George Bush Intcntl
$319United Airlines
Fri, Oct 2 - Sun, Oct 4
United Airlines Logo
3:12 pm - 9:16 pmSTL  Lambert-St Louis-BTR Baton Rouge Ryan
6h 04m1 stop Houston George Bush Intcntl
United Airlines Logo
12:05 pm - 9:21 pmBTR  Baton Rouge Ryan-STL Lambert-St Louis
9h 16m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$322United Airlines
Thu, Oct 1 - Sat, Oct 10
American Airlines Logo
12:45 pm - 5:43 pmSTL  Lambert-St Louis-BTR Baton Rouge Ryan
4h 58m1 stop Dallas/Fort Worth
American Airlines Logo
11:14 am - 4:14 pmBTR  Baton Rouge Ryan-STL Lambert-St Louis
5h 00m1 stop Dallas/Fort Worth
$349American Airlines
Tue, Aug 25 - Sat, Aug 29
Delta Logo
7:00 am - 12:56 pmSTL  Lambert-St Louis-BTR Baton Rouge Ryan
5h 56m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:53 pm - 11:54 pmBTR  Baton Rouge Ryan-STL Lambert-St Louis
6h 01m1 stop Atlanta Hartsfield-Jackson
$378Delta
Thu, Oct 8 - Mon, Oct 12
American Airlines Logo
5:40 am - 10:54 amSTL  Lambert-St Louis-BTR Baton Rouge Ryan
5h 14m1 stop Dallas/Fort Worth
American Airlines Logo
5:26 pm - 11:42 pmBTR  Baton Rouge Ryan-STL Lambert-St Louis
6h 16m1 stop Dallas/Fort Worth
$379American Airlines
Fri, Oct 16 - Mon, Oct 19
American Airlines Logo
9:31 am - 8:06 pmSTL  Lambert-St Louis-BTR Baton Rouge Ryan
10h 35m2 stops Chicago O'Hare Intl Dallas/Fort Worth
American Airlines Logo
5:28 pm - 11:43 pmBTR  Baton Rouge Ryan-STL Lambert-St Louis
6h 15m1 stop Dallas/Fort Worth
$384American Airlines
Sat, Sep 5 - Fri, Sep 11

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American Airlines flights from St. Louis to Baton Rouge

Our best American Airlines deals on St. Louis to Baton Rouge flight tickets
American Airlines
Sep 2
STL5:42 amLambert-St Louis
5h 00m
1 stop
BTR10:42 amBaton Rouge Ryan
Sep 5
BTR11:14 amBaton Rouge Ryan
6h 51m
1 stop
STL6:05 pmLambert-St Louis
$319
American Airlines
Aug 25
STL12:45 pmLambert-St Louis
4h 58m
1 stop
BTR5:43 pmBaton Rouge Ryan
Aug 29
BTR11:14 amBaton Rouge Ryan
5h 00m
1 stop
STL4:14 pmLambert-St Louis
$349
American Airlines
Oct 16
STL5:40 amLambert-St Louis
5h 14m
1 stop
BTR10:54 amBaton Rouge Ryan
Oct 19
BTR5:26 pmBaton Rouge Ryan
6h 16m
1 stop
STL11:42 pmLambert-St Louis
$379

United Airlines flights from St. Louis to Baton Rouge

Our best United Airlines deals on St. Louis to Baton Rouge flight tickets
United Airlines
Oct 1
STL3:12 pmLambert-St Louis
6h 04m
1 stop
BTR9:16 pmBaton Rouge Ryan
Oct 10
BTR4:07 pmBaton Rouge Ryan
6h 23m
1 stop
STL10:30 pmLambert-St Louis
$317
United Airlines
Oct 1
STL3:12 pmLambert-St Louis
6h 04m
1 stop
BTR9:16 pmBaton Rouge Ryan
Oct 10
BTR12:05 pmBaton Rouge Ryan
9h 16m
2 stops
STL9:21 pmLambert-St Louis
$322
United Airlines
Sep 2
STL11:15 amLambert-St Louis
6h 18m
1 stop
BTR5:33 pmBaton Rouge Ryan
Sep 5
BTR2:15 pmBaton Rouge Ryan
8h 44m
2 stops
STL10:59 pmLambert-St Louis
$324

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 August 10, 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

Cheapest round-trip

St. LouisBaton Rouge

STL Lambert-St Louis - BTR Baton Rouge Ryan

STLBTR

Lambert-St Louis

Fri 10/2

3:12 pm-9:16 pm

1 stop6h 04m

Baton Rouge Ryan

Tue 10/6

5:20 am-10:10 am

1 stop4h 50m

$317

St. LouisBaton Rouge

STL Lambert-St Louis - BTR Baton Rouge Ryan

STLBTR

Lambert-St Louis

Thu 10/1

3:12 pm-9:16 pm

1 stop6h 04m

Baton Rouge Ryan

Sat 10/10

4:07 pm-10:30 pm

1 stop6h 23m

$317
Quickest round-trip

St. LouisBaton Rouge

STL Lambert-St Louis - BTR Baton Rouge Ryan

STLBTR

Lambert-St Louis

Thu 12/10

5:37 pm-10:02 pm

1 stop4h 25m

Baton Rouge Ryan

Thu 12/17

6:59 pm-11:56 pm

1 stop4h 57m

$319

St. LouisBaton Rouge

STL Lambert-St Louis - BTR Baton Rouge Ryan

STLBTR

Lambert-St Louis

Sat 9/5

3:44 pm-8:46 pm

1 stop5h 02m

Baton Rouge Ryan

Fri 9/11

6:03 am-12:32 pm

1 stop6h 29m

$319

St. LouisBaton Rouge

STL Lambert-St Louis - BTR Baton Rouge Ryan

STLBTR

Lambert-St Louis

Fri 10/2

3:12 pm-9:16 pm

1 stop6h 04m

Baton Rouge Ryan

Sun 10/4

5:20 am-10:10 am

1 stop4h 50m

$319

St. LouisBaton Rouge

STL Lambert-St Louis - BTR Baton Rouge Ryan

STLBTR

Lambert-St Louis

Thu 10/1

3:12 pm-9:16 pm

1 stop6h 04m

Baton Rouge Ryan

Sat 10/10

12:05 pm-9:21 pm

2 stops9h 16m

$322

St. LouisBaton Rouge

STL Lambert-St Louis - BTR Baton Rouge Ryan

STLBTR

Lambert-St Louis

Tue 8/25

12:45 pm-5:43 pm

1 stop4h 58m

Baton Rouge Ryan

Sat 8/29

11:14 am-4:14 pm

1 stop5h 00m

$349

St. LouisBaton Rouge

STL Lambert-St Louis - BTR Baton Rouge Ryan

STLBTR

Lambert-St Louis

Thu 10/8

7:00 am-12:56 pm

1 stop5h 56m

Baton Rouge Ryan

Mon 10/12

5:53 pm-11:54 pm

1 stop6h 01m

$378

St. LouisBaton Rouge

STL Lambert-St Louis - BTR Baton Rouge Ryan

STLBTR

Lambert-St Louis

Fri 10/16

5:40 am-10:54 am

1 stop5h 14m

Baton Rouge Ryan

Mon 10/19

5:26 pm-11:42 pm

1 stop6h 16m

$379

St. LouisBaton Rouge

STL Lambert-St Louis - BTR Baton Rouge Ryan

STLBTR

Lambert-St Louis

Sat 9/5

9:31 am-8:06 pm

2 stops10h 35m

Baton Rouge Ryan

Fri 9/11

5:28 pm-11:43 pm

1 stop6h 15m

$384

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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 August is your next best option. Flight prices from St. Louis to Baton Rouge during August average around $288.

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 58m

Direct flights

None
The fastest flight from St. Louis to Baton Rouge takes 4h 58m
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

Frequently asked questions about flying from St. Louis to Baton Rouge

  • 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 58m, 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 $248Free CancellationRating
7.1
11,897 reviews
Search American Airlines flights
DeltaPriceFrom $273Free CancellationRating
7.8
8,497 reviews
Search Delta flights

Traveling to a place near Baton Rouge?

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