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St. Louis

$70+ Cheap flights from Louisiana to St. Louis (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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
MSY — STL
Apr 25 — May 21
Sat 4/25
Sat 5/2
1 adult, Economy
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Cheap flight deals from Louisiana to St. Louis

Cheapest flights from Louisiana to St. Louis
Explore the most affordable flight options available from Louisiana to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2026.

This CheapOair deal was found by Cheapflights users on 3/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/239:44 pm
MSY
-
STL
1 stop25h 35m
Frontier
Sun 4/264:59 pm
STL
-
MSY
1 stop17h 42m
Frontier
Deal found 3/25$151
This Priceline deal was found by Cheapflights users on 3/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/144:25 pm
MSY
-
STL
1 stop7h 56m
Frontier
Sun 5/1712:16 pm
STL
-
MSY
1 stop8h 35m
Frontier
Deal found 3/25$180
This CheapOair deal was found by Cheapflights users on 3/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/74:25 pm
MSY
-
STL
1 stop7h 56m
Frontier
Fri 5/84:19 pm
STL
-
MSY
1 stop24h 14m
Frontier
Deal found 3/23$192
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Tue 5/125:21 pm
MSY
-
STL
1 stop15h 34m
Frontier
Fri 5/154:19 pm
STL
-
MSY
2 stops24h 02m
Frontier
Deal found 3/25$193
This CheapOair deal was found by Cheapflights users on 3/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:46 pm
MSY
-
STL
1 stop19h 05m
Frontier
Fri 4/104:59 pm
STL
-
MSY
1 stop24h 34m
Frontier
Deal found 3/25$212
This CheapOair deal was found by Cheapflights users on 3/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/239:44 pm
MSY
-
STL
1 stop25h 35m
Frontier
Thu 4/3011:21 am
STL
-
MSY
1 stop4h 29m
Frontier
Deal found 3/25$216
This CheapOair deal was found by Cheapflights users on 3/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/294:25 pm
MSY
-
STL
1 stop7h 56m
Frontier
Sun 5/318:08 pm
STL
-
MSY
1 stop25h 02m
Frontier
Deal found 3/24$236
This Kiwi.com deal was found by Cheapflights users on 3/23. 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.
Fri 5/155:21 pm
MSY
-
STL
1 stop15h 34m
Frontier
Mon 5/185:27 pm
STL
-
MSY
1 stop22h 54m
Frontier
Deal found 3/23$239
This Frontier deal was found by Cheapflights users on 3/22. 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.
Fri 3/279:30 pm
MSY
-
STL
1 stop9h 37m
Frontier
Sun 3/297:52 am
STL
-
MSY
1 stop10h 13m
Frontier
Deal found 3/22$240
This CheapOair deal was found by Cheapflights users on 3/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/33:36 pm
MSY
-
STL
1 stop18h 12m
Frontier
Sun 4/54:59 pm
STL
-
MSY
1 stop14h 47m
Frontier
Deal found 3/23$241
This American Airlines deal was found by Cheapflights users on 3/21. 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.
Sat 4/185:07 pm
LFT
-
STL
1 stop5h 52m
American Airlines
Sat 4/252:12 pm
STL
-
LFT
1 stop7h 57m
American Airlines
Deal found 3/21$292
This Delta deal was found by Cheapflights users on 3/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/251:37 pm
BTR
-
STL
1 stop5h 34m
Delta
Sat 5/29:31 am
STL
-
BTR
1 stop5h 45m
Delta
Deal found 3/25$305

Find flight deals from Louisiana to St. Louis

Keep the following information in mind while searching for Louisiana to St. Louis flight deals. Data was last updated March 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$151
(CheapOair)

One-way from

$70
(Kiwi.com)

Popular in

April

Cheapest in

February

Average price

$380

Good round-trip deal

$353 or less

Good one-way deal

$209 or less
Provider with most accurate pricing for New Orleans Louis Armstrong-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for New Orleans Louis Armstrong-Lambert-St Louis flights.
Search Deals
From Louisiana to Lambert-St Louis
Search Deals
One-way flight from Louisiana to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Louisiana to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Louisiana to Lambert-St Louis.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisiana 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 March 26, 2026.
Use the filters below to find and compare flights from Louisiana to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Sun 4/5

12:46 pm-11:25 pm

1 stop10h 39m

Lambert-St Louis

Thu 4/9

4:59 pm-7:46 am

1 stop14h 47m

$270

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Wed 4/22

5:30 am-11:56 am

1 stop6h 26m

Lambert-St Louis

Thu 4/30

6:20 am-11:54 am

1 stop5h 34m

$301

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sat 4/25

1:37 pm-7:11 pm

1 stop5h 34m

Lambert-St Louis

Sat 5/2

9:31 am-3:16 pm

1 stop5h 45m

$305

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Mon 4/20

4:25 pm-10:55 pm

1 stop6h 30m

Lambert-St Louis

Mon 4/27

7:50 pm-11:35 pm

1 stop3h 45m

$309

ShreveportSt. Louis

SHV - STL

SHVSTL

Shreveport

Thu 4/9

5:40 pm-11:58 pm

1 stop6h 18m

Lambert-St Louis

Mon 4/13

4:41 pm-10:11 pm

1 stop5h 30m

$314

ShreveportSt. Louis

SHV - STL

SHVSTL

Shreveport

Wed 4/8

5:40 pm-11:58 pm

1 stop6h 18m

Lambert-St Louis

Sun 4/12

6:00 am-11:51 am

1 stop5h 51m

$319

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Tue 4/7

7:05 pm-11:58 pm

1 stop4h 53m

Lambert-St Louis

Sat 4/11

6:00 am-12:51 pm

1 stop6h 51m

$325

Lake CharlesSt. Louis

LCH - STL

LCHSTL

Lake Charles

Sat 4/18

9:30 am-4:08 pm

1 stop6h 38m

Lambert-St Louis

Sat 4/25

6:00 am-1:03 pm

1 stop7h 03m

$329

LafayetteSt. Louis

LFT - STL

LFTSTL

Lafayette Regional

Thu 8/6

5:03 pm-11:53 pm

1 stop6h 50m

Lambert-St Louis

Sun 8/9

6:00 am-10:47 am

1 stop4h 47m

$329

LafayetteSt. Louis

LFT - STL

LFTSTL

Lafayette Regional

Mon 6/22

5:03 pm-11:56 pm

1 stop6h 53m

Lambert-St Louis

Sat 6/27

8:00 am-2:39 pm

1 stop6h 39m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 53 resultsSorted by cheapest first
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Best time to book a flight from Louisiana to St. Louis

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

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

Currently, December is the cheapest month in which you can book a flight from Louisiana to St. Louis (average of $75). Flying from Louisiana to St. Louis in August is currently the most expensive (average of $339). 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 LA to STL?

Find hourly flight availability from Louisiana 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 March 26, 2026.

One of the essential ways to save on airfare from Louisiana to St. Louis is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 3% on airfare.

What is the cheapest day to fly from Louisiana to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Louisiana to St. Louis. Price data was last updated on March 23, 2026.

Travelers seeking maximum savings on their Louisiana to St. Louis flight should consider departing on Wednesday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Louisiana to St. Louis?

Related info for your journey

Find useful and relevant information for your journey from Louisiana 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 airport do you fly into for flights to St. Louis from Louisiana?

    If you book a flight to St. Louis from Louisiana, you will be flying to 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 Louisiana to St. Louis flight route?

    This flight path from Louisiana to Lambert-St Louis was viewed by 7 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Frontier, Delta, and Southwest can get you from Louisiana to St. Louis in just under 5h 34m. Your travel time can differ by up to 5h 05m. The distance from Louisiana to St. Louis is about 569 mi. 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 Louisiana to St. Louis one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $35. Users have also found prices from $98 and $99 on Delta and American Airlines, respectively.

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

    The most popular route from Louisiana to St. Louis is New Orleans Louis Armstrong - Lambert-St Louis. You may also consider Lafayette Regional - Lambert-St Louis or Baton Rouge Ryan - Lambert-St Louis.

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

    Looking at all options, your cheapest flight can be booked for $158. While the most popular route (New Orleans Louis Armstrong - Lambert-St Louis) can be booked for $241 on average, our data indicates $367 when flying from Louisiana to St. Louis.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Louisiana to St. Louis (average of $75). Flying from Louisiana to St. Louis in August is currently the most expensive (average of $339). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Louisiana to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Louisiana to St. Louis

Discover the top 5 airlines that operate flights from Louisiana 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 March 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$72Average$168FlexibilityNo cancel feeOn-time62%
DeltaCheapest$139Average$309FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$223Average$321FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$223Average$359FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$270Average$390FlexibilityNo cancel feeOn-time63%

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