Louisiana

$80+ Cheap flights from St. Louis (STL) to Louisiana

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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MSY
Mar 30 — Apr 61
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Cheap flight deals from St. Louis to Louisiana

Cheapest flights from St. Louis to Louisiana
Explore the most affordable flight options available from St. Louis to Louisiana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 28, 2026.

This Expedia deal was found by Cheapflights users on 2/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/118:16 pm
STL
-
MSY
1 stop18h 28m
Frontier
Mon 4/132:22 pm
MSY
-
STL
1 stop9h 03m
Frontier
Deal found 2/27$181
This Kiwi.com deal was found by Cheapflights users on 2/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1811:32 am
STL
-
MSY
2 stops11h 12m
Multiple Airlines
Mon 3/2311:46 am
MSY
-
STL
1 stop22h 46m
Multiple Airlines
Deal found 2/25$189
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:21 am
STL
-
MSY
1 stop23h 08m
Frontier
Thu 4/93:24 pm
MSY
-
STL
1 stop18h 24m
Frontier
Deal found 2/27$198
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:17 pm
STL
-
MSY
1 stop18h 27m
Multiple Airlines
Tue 4/2111:06 am
MSY
-
STL
2 stops19h 44m
Multiple Airlines
Deal found 2/23$204
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:21 am
STL
-
MSY
2 stops11h 23m
Multiple Airlines
Thu 4/93:24 pm
MSY
-
STL
1 stop18h 24m
Multiple Airlines
Deal found 2/27$208
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/153:02 pm
STL
-
MSY
1 stop19h 09m
Multiple Airlines
Tue 5/196:15 am
MSY
-
STL
2 stops24h 35m
Multiple Airlines
Deal found 2/24$215
This Frontier deal was found by Cheapflights users on 2/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/198:02 am
STL
-
MSY
1 stop12h 15m
Frontier
Thu 3/269:12 pm
MSY
-
STL
1 stop9h 50m
Frontier
Deal found 2/25$218
This Kiwi.com deal was found by Cheapflights users on 2/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/64:59 pm
STL
-
MSY
1 stop26h 02m
Multiple Airlines
Fri 4/103:36 pm
MSY
-
STL
1 stop18h 12m
Multiple Airlines
Deal found 2/26$221
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/28:17 pm
STL
-
MSY
1 stop18h 27m
Multiple Airlines
Wed 5/68:01 pm
MSY
-
STL
2 stops14h 29m
Multiple Airlines
Deal found 2/24$222
This Travelocity deal was found by Cheapflights users on 2/24. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/198:02 am
STL
-
MSY
1 stop12h 15m
Frontier
Sun 3/229:12 pm
MSY
-
STL
1 stop26h 07m
Frontier
Deal found 2/24$224
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1911:16 am
STL
-
MSY
1 stop5h 40m
Frontier
Fri 4/243:39 pm
MSY
-
STL
1 stop27h 53m
Frontier
Deal found 2/27$225
This United Airlines deal was found by Cheapflights users on 2/24. 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.
Sun 4/266:00 am
STL
-
BTR
1 stop5h 21m
United Airlines
Tue 4/285:00 am
BTR
-
STL
1 stop4h 25m
United Airlines
Deal found 2/24$257

Find flight deals from St. Louis to Louisiana

Keep the following information in mind while searching for St. Louis to Louisiana flight deals. Data was last updated February 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$181
(Expedia)

One-way from

$80
(Frontier)

Popular in

February

Cheapest in

September

Average price

$560

Good round-trip deal

$389 or less

Good one-way deal

$232 or less
Provider with most accurate pricing for Lambert-St Louis-New Orleans Louis Armstrong flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-New Orleans Louis Armstrong flights.
From Lambert-St Louis to Louisiana
One-way flight from Lambert-St Louis to Louisiana
Highest demand for flights based on searches. 10% potential increase in price ($46 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Average for round-trip flights in February 2026
Price to beat on a round-trip flight from Lambert-St Louis to Louisiana.
Price to beat on a one-way flight from Lambert-St Louis to Louisiana.

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Louisiana 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 February 28, 2026.
Use the filters below to find and compare flights from St. Louis to Louisiana that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Fri 5/1

4:41 pm-9:56 pm

1 stop5h 15m

Baton Rouge Ryan

Sun 5/3

6:00 am-10:34 am

1 stop4h 34m

$257

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Sun 4/26

9:59 am-3:15 pm

1 stop5h 16m

Baton Rouge Ryan

Tue 4/28

6:00 am-10:34 am

1 stop4h 34m

$297

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Thu 4/30

9:59 am-3:15 pm

1 stop5h 16m

Baton Rouge Ryan

Mon 5/4

7:08 pm-11:36 pm

1 stop4h 28m

$297

St. LouisLafayette

STL - LFT

STLLFT

Lambert-St Louis

Thu 3/26

6:00 am-11:25 am

1 stop5h 25m

Lafayette Regional

Thu 4/2

5:15 am-9:25 am

1 stop4h 10m

$303

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Sat 4/11

7:05 am-2:35 pm

2 stops7h 30m

New Orleans Louis Armstrong

Sat 4/18

7:45 am-3:20 pm

2 stops7h 35m

$331

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Thu 4/2

9:40 pm-11:30 pm

Nonstop1h 50m

New Orleans Louis Armstrong

Sun 4/5

8:05 am-1:05 pm

1 stop5h 00m

$331

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Thu 3/26

6:00 am-11:32 am

1 stop5h 32m

Baton Rouge Ryan

Thu 4/2

5:00 am-9:25 am

1 stop4h 25m

$331

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Thu 5/28

6:14 am-11:01 am

1 stop4h 47m

New Orleans Louis Armstrong

Sun 5/31

7:00 am-12:11 pm

1 stop5h 11m

$339

St. LouisLafayette

STL - LFT

STLLFT

Lambert-St Louis

Thu 4/16

6:00 am-11:16 am

1 stop5h 16m

Lafayette Regional

Sun 4/19

5:15 am-9:25 am

1 stop4h 10m

$344

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Mon 4/13

5:20 am-10:02 am

1 stop4h 42m

Baton Rouge Ryan

Mon 4/20

4:53 pm-10:59 pm

1 stop6h 06m

$354

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/26

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from St. Louis to Louisiana

Have a flexible travel schedule? Discover the best time to fly to Louisiana from St. Louis 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 St. Louis to Louisiana

What is the cheapest month to book a flight from St. Louis to Louisiana?

Currently, December is the cheapest month in which you can book a flight from St. Louis to Louisiana (average of $88). Flying from St. Louis to Louisiana in June is currently the most expensive (average of $274). 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 STL to LA?

Find hourly flight availability from St. Louis to Louisiana. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 28, 2026.

It’s optimal to fly from St. Louis to Louisiana at noon. By choosing this option you can save up to 12% on the cost of your flight, compared to a flight in the evening.

Reviews of airlines servicing Louisiana

Get insights into the airlines that provide service to Louisiana. 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 Louisiana. Reviews last updated February 28, 2026.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from St. Louis to Louisiana to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Louisiana. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from St. Louis to Louisiana?

    If you book a flight to Louisiana from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

  • How popular is this St. Louis to Louisiana flight route?

  • How long is the flight from St. Louis to Louisiana?

    Departing from St. Louis to Louisiana will take you 5h 15m. There are 569 mi between St. Louis and Louisiana. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from St. Louis to Louisiana one-way?

    The cheapest airlines for a one-way flight from St. Louis to Louisiana are Frontier ($55), Delta ($98), and United Airlines ($98).

  • What are the most popular routes from St. Louis to Louisiana?

  • What are the cheapest flights from St. Louis to Louisiana?

    Looking for the cheapest flight from St. Louis to Louisiana? While on average our users pay $380, our data indicates the cheapest price to be $173. The most popular route (Lambert-St Louis - New Orleans Louis Armstrong), is priced around $208.

  • Can I find deals for flights from St. Louis to Louisiana that include hotel bookings?

    Yes. In addition to deals on St. Louis to Louisiana flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Louisiana?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Louisiana.

  • Can I find deals for business class flights from St. Louis to Louisiana?

    Yes. Cheapflights offers flight deals from St. Louis to Louisiana 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 St. Louis to Louisiana?

    Currently, December is the cheapest month in which you can book a flight from St. Louis to Louisiana (average of $88). Flying from St. Louis to Louisiana in June is currently the most expensive (average of $274). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Louisiana

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from St. Louis to Louisiana

Discover the top 5 airlines that operate flights from St. Louis to Louisiana. 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 February 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$82Average$238FlexibilityNo cancel feeOn-time62%
DeltaCheapest$93Average$299FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$137Average$337FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$186Average$373FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$240Average$413FlexibilityNo cancel feeOn-time63%

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