HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$35+ 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 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
MSY — STL
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Louisiana to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 February 12, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/10. 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 2/276:49 pm
MSY
-
STL
1 stop12h 02m
Multiple Airlines
Mon 3/28:22 pm
STL
-
MSY
2 stops13h 16m
Multiple Airlines
Deal found 2/10$165
This CheapOair deal was found by Cheapflights users on 2/10. 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 4/239:49 pm
MSY
-
STL
1 stop25h 30m
Frontier
Sun 4/264:55 pm
STL
-
MSY
1 stop25h 00m
Frontier
Deal found 2/10$171
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/118:36 pm
MSY
-
STL
1 stop10h 41m
Multiple Airlines
Wed 3/1811:32 am
STL
-
MSY
2 stops11h 12m
Multiple Airlines
Deal found 2/9$182
This CheapOair deal was found by Cheapflights users on 2/9. 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 5/83:36 pm
MSY
-
STL
1 stop27h 36m
Frontier
Sun 5/108:12 pm
STL
-
MSY
1 stop18h 32m
Frontier
Deal found 2/9$192
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Wed 3/117:00 am
MSY
-
STL
1 stop5h 27m
United Airlines
Wed 3/185:00 am
STL
-
MSY
1 stop4h 40m
United Airlines
Deal found 2/9$197
This American Airlines deal was found by Cheapflights users on 2/9. 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.
Tue 3/1010:23 am
MSY
-
STL
1 stop6h 38m
American Airlines
Tue 3/1710:20 am
STL
-
MSY
1 stop4h 41m
American Airlines
Deal found 2/9$201
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Thu 4/25:00 am
MSY
-
STL
1 stop4h 25m
United Airlines
Tue 4/79:10 am
STL
-
MSY
2 stops8h 42m
United Airlines
Deal found 2/11$202
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 2/237:27 pm
MSY
-
STL
2 stops35h 24m
Multiple Airlines
Fri 2/278:22 pm
STL
-
MSY
1 stop21h 32m
Multiple Airlines
Deal found 2/9$203
This United Airlines deal was found by Cheapflights users on 2/12. 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.
Sat 3/77:00 am
MSY
-
STL
1 stop7h 43m
United Airlines
Mon 3/96:00 am
STL
-
MSY
1 stop4h 59m
United Airlines
Deal found 2/12$205
This Delta deal was found by Cheapflights users on 2/11. 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.
Wed 3/186:44 am
MSY
-
STL
1 stop4h 25m
Delta
Sun 3/227:03 am
STL
-
MSY
1 stop5h 07m
Delta
Deal found 2/11$207
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 2/237:27 pm
MSY
-
STL
2 stops35h 24m
Multiple Airlines
Mon 3/23:49 pm
STL
-
MSY
1 stop7h 09m
Multiple Airlines
Deal found 2/9$211
This CheapOair deal was found by Cheapflights users on 2/9. 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 2/204:23 pm
MSY
-
STL
1 stop25h 23m
Frontier
Sun 2/223:49 pm
STL
-
MSY
1 stop21h 15m
Frontier
Deal found 2/9$213

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 February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$165
(Kiwi.com)

One-way from

$35
(Expedia)

Popular in

February

Cheapest in

March

Average price

$611

Good round-trip deal

$292 or less

Good one-way deal

$300 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. 9% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 12, 2026.
Use the filters below to find and compare flights from Louisiana to St. Louis that are best for you.

Fly from

Louisiana

Fly to

St. Louis

Route

Depart

Return

Price

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Fri 2/27

6:49 pm-6:51 am

1 stop12h 02m

Lambert-St Louis

Mon 3/2

8:22 pm-9:38 am

2 stops13h 16m

$165

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Mon 2/23

9:51 pm-10:27 pm

1 stop24h 36m

Lambert-St Louis

Fri 2/27

1:59 pm-1:39 pm

1 stop23h 40m

$171

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Thu 4/23

9:49 pm-11:19 pm

1 stop25h 30m

Lambert-St Louis

Sun 4/26

4:55 pm-5:55 pm

1 stop25h 00m

$171

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Fri 5/8

3:36 pm-7:12 pm

1 stop27h 36m

Lambert-St Louis

Sun 5/10

8:12 pm-2:44 pm

1 stop18h 32m

$192

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Wed 3/11

7:00 am-12:27 pm

1 stop5h 27m

Lambert-St Louis

Wed 3/18

5:00 am-9:40 am

1 stop4h 40m

$197

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Mon 3/2

7:12 pm-11:36 pm

1 stop4h 24m

Lambert-St Louis

Tue 3/3

6:00 am-12:11 pm

1 stop6h 11m

$205

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Thu 3/5

5:00 am-9:21 am

1 stop4h 21m

Lambert-St Louis

Sun 3/8

6:00 am-10:59 am

1 stop4h 59m

$205

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Mon 2/23

7:27 pm-6:51 am

2 stops35h 24m

Lambert-St Louis

Mon 3/2

3:49 pm-10:58 pm

1 stop7h 09m

$211

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Sat 3/7

5:25 am-11:02 am

1 stop5h 37m

Lambert-St Louis

Mon 3/9

6:59 pm-11:40 pm

1 stop4h 41m

$215

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Thu 4/2

5:00 am-9:25 am

1 stop4h 25m

Lambert-St Louis

Tue 4/7

6:00 am-1:12 pm

1 stop7h 12m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 55 results
1
2
3
...
6

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 February 12, 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 evening tend to be the most expensive. A flight in the morning 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 February 7, 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. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 8 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, United Airlines, and American Airlines can get you from Louisiana to St. Louis in just under 4h 21m. Your travel time can differ by up to 20h 15m. 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 $92. Users have also found prices from $98 and $98 on Delta and United 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 Shreveport - 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 $98. While the most popular route (New Orleans Louis Armstrong - Lambert-St Louis) can be booked for $197 on average, our data indicates $375 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
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Louisiana to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Newark to St. Louis flights
John F Kennedy Intl to Kansas City flights
LaGuardia to St. Louis flights
LaGuardia to Kansas City flights
Los Angeles to Kansas City flights
Newark to Kansas City flights
John F Kennedy Intl to St. Louis flights
O'Hare Intl to Kansas City flights
Denver to Kansas City flights
Dulles Intl to St. Louis flights
Los Angeles to St. Louis flights
Denver to St. Louis flights
Hobby to Kansas City flights
Hobby to St. Louis flights
Boston to Kansas City flights
Dallas/Fort Worth to Kansas City flights
Atlanta to Kansas City flights
Minneapolis to St. Louis flights
Dulles Intl to Kansas City flights
Atlanta to St. Louis flights
Seattle to Kansas City flights
Boston to St. Louis flights
George Bush Intcntl to Kansas City flights
Seattle to St. Louis flights
Baltimore to St. Louis flights
Sky Harbor Intl to Kansas City flights
Dallas/Fort Worth to St. Louis flights
San Francisco to Kansas City flights
Baltimore to Kansas City flights
George Bush Intcntl to St. Louis flights
Philadelphia to St. Louis flights
O'Hare Intl to St. Louis flights
Orlando to St. Louis flights
San Francisco to St. Louis flights
Sky Harbor Intl to St. Louis flights
Ontario to Kansas City flights
Miami to Kansas City flights
Minneapolis to Kansas City flights
Reagan-National to Kansas City flights
Reagan-National to St. Louis flights
Fort Lauderdale to St. Louis flights
Philadelphia to Kansas City flights
Detroit to St. Louis flights
Orlando to Kansas City flights
Salt Lake City to Kansas City flights
Charlotte to St. Louis flights
Miami to St. Louis flights
Cleveland to St. Louis flights
Santa Ana to Kansas City flights
Fort Lauderdale to Kansas City flights

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 February 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$55Average$182FlexibilityNo cancel feeOn-time62%
DeltaCheapest$139Average$307FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$223Average$350FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$223Average$360FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$278Average$392FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.