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Cheap flights from Louisiana to St. Louis from $75

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisiana to St. Louis departing on 4/9. 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 Louisiana to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:10 am - 6:51 am
MSY
-
STL
24h 41m
1 stop
Frontier Logo
8:20 pm - 5:02 pm
STL
-
MSY
20h 42m
1 stop
$171Frontier
Tue, Feb 17 - Fri, Feb 20
Multiple Airlines Logo
1:38 pm - 11:59 pm
MSY
-
STL
10h 21m
1 stop
Multiple Airlines Logo
3:49 pm - 11:01 am
STL
-
MSY
19h 12m
1 stop
$189Multiple Airlines
Sat, Feb 21 - Mon, Feb 23
Frontier Logo
7:38 pm - 2:46 pm
MSY
-
STL
19h 08m
1 stop
Frontier Logo
12:03 pm - 6:48 pm
STL
-
MSY
6h 45m
1 stop
$201Frontier
Fri, Jan 30 - Sun, Feb 1
Multiple Airlines Logo
6:52 am - 11:59 pm
MSY
-
STL
17h 07m
2 stops
Multiple Airlines Logo
3:49 pm - 11:01 am
STL
-
MSY
19h 12m
1 stop
$207Multiple Airlines
Sat, Feb 21 - Mon, Feb 23
Delta Logo
5:38 pm - 11:36 pm
SHV
-
STL
5h 58m
1 stop
Delta Logo
5:01 pm - 10:17 pm
STL
-
SHV
5h 16m
1 stop
$249Delta
Fri, Feb 20 - Sat, Feb 21
Delta Logo
3:11 pm - 7:27 pm
LFT
-
STL
4h 16m
1 stop
Delta Logo
5:04 pm - 10:13 pm
STL
-
LFT
5h 09m
1 stop
$251Delta
Sat, Jan 31 - Tue, Feb 3
American Airlines Logo
10:13 am - 5:13 pm
SHV
-
STL
7h 00m
1 stop
American Airlines Logo
10:43 am - 5:56 pm
STL
-
SHV
7h 13m
2 stops
$254American Airlines
Fri, Feb 20 - Sat, Feb 21
American Airlines Logo
6:00 am - 11:03 am
LFT
-
STL
5h 03m
1 stop
American Airlines Logo
8:31 am - 6:01 pm
STL
-
LFT
9h 30m
2 stops
$256American Airlines
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
5:20 am - 9:22 am
LFT
-
STL
4h 02m
1 stop
United Airlines Logo
6:00 am - 11:27 am
STL
-
LFT
5h 27m
1 stop
$269United Airlines
Sun, Feb 1 - Sun, Feb 8
United Airlines Logo
9:30 am - 3:39 pm
BTR
-
STL
6h 09m
1 stop
United Airlines Logo
4:28 pm - 9:32 pm
STL
-
BTR
5h 04m
1 stop
$269United Airlines
Sat, Feb 7 - Sat, Feb 14

Frontier flights from Louisiana to St. Louis

Our best Frontier deals on Louisiana to St. Louis flight tickets
Frontier
Feb 17
MSY6:10 amNew Orleans Louis Armstrong
24h 41m
1 stop
STL6:51 amLambert-St Louis
Feb 20
STL8:20 pmLambert-St Louis
20h 42m
1 stop
MSY5:02 pmNew Orleans Louis Armstrong
$171
Frontier
Feb 6
MSY11:02 amNew Orleans Louis Armstrong
12h 31m
1 stop
STL11:33 pmLambert-St Louis
Feb 8
STL12:03 pmLambert-St Louis
6h 45m
1 stop
MSY6:48 pmNew Orleans Louis Armstrong
$190
Frontier
Jan 30
MSY7:38 pmNew Orleans Louis Armstrong
19h 08m
1 stop
STL2:46 pmLambert-St Louis
Feb 1
STL12:03 pmLambert-St Louis
6h 45m
1 stop
MSY6:48 pmNew Orleans Louis Armstrong
$201

American Airlines flights from Louisiana to St. Louis

Our best American Airlines deals on Louisiana to St. Louis flight tickets
American Airlines
Feb 20
SHV10:13 amShreveport
7h 00m
1 stop
STL5:13 pmLambert-St Louis
Feb 21
STL10:43 amLambert-St Louis
7h 13m
2 stops
SHV5:56 pmShreveport
$254
American Airlines
Jan 31
LFT6:00 amLafayette Regional
5h 03m
1 stop
STL11:03 amLambert-St Louis
Feb 3
STL8:31 amLambert-St Louis
9h 30m
2 stops
LFT6:01 pmLafayette Regional
$256
American Airlines
Jan 31
LFT6:00 amLafayette Regional
5h 03m
1 stop
STL11:03 amLambert-St Louis
Feb 3
STL12:03 pmLambert-St Louis
5h 58m
1 stop
LFT6:01 pmLafayette Regional
$265

momondo 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, momondo users made 832,500 searches. Data last updated January 12, 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

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Tue 2/17

6:10 am-6:51 am

1 stop24h 41m

Lambert-St Louis

Fri 2/20

8:20 pm-5:02 pm

1 stop20h 42m

$171

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Sat 2/21

1:38 pm-11:59 pm

1 stop10h 21m

Lambert-St Louis

Mon 2/23

3:49 pm-11:01 am

1 stop19h 12m

$189

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Fri 1/30

7:38 pm-2:46 pm

1 stop19h 08m

Lambert-St Louis

Sun 2/1

12:03 pm-6:48 pm

1 stop6h 45m

$201

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Sat 2/21

6:52 am-11:59 pm

2 stops17h 07m

Lambert-St Louis

Mon 2/23

3:49 pm-11:01 am

1 stop19h 12m

$207

ShreveportSt. Louis

SHV - STL

SHVSTL

Shreveport

Fri 2/20

5:38 pm-11:36 pm

1 stop5h 58m

Lambert-St Louis

Sat 2/21

5:01 pm-10:17 pm

1 stop5h 16m

$249

LafayetteSt. Louis

LFT - STL

LFTSTL

Lafayette Regional

Sat 1/31

3:11 pm-7:27 pm

1 stop4h 16m

Lambert-St Louis

Tue 2/3

5:04 pm-10:13 pm

1 stop5h 09m

$251

ShreveportSt. Louis

SHV - STL

SHVSTL

Shreveport

Fri 2/20

10:13 am-5:13 pm

1 stop7h 00m

Lambert-St Louis

Sat 2/21

10:43 am-5:56 pm

2 stops7h 13m

$254

LafayetteSt. Louis

LFT - STL

LFTSTL

Lafayette Regional

Sat 1/31

6:00 am-11:03 am

1 stop5h 03m

Lambert-St Louis

Tue 2/3

8:31 am-6:01 pm

2 stops9h 30m

$256

LafayetteSt. Louis

LFT - STL

LFTSTL

Lafayette Regional

Sun 2/1

5:20 am-9:22 am

1 stop4h 02m

Lambert-St Louis

Sun 2/8

6:00 am-11:27 am

1 stop5h 27m

$269

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Sat 2/7

9:30 am-3:39 pm

1 stop6h 09m

Lambert-St Louis

Sat 2/14

4:28 pm-9:32 pm

1 stop5h 04m

$269

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Louisiana to St. Louis

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 St. Louis?

In general, August is the cheapest month to fly from Louisiana to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $340. The month of May is another great option to travel to St. Louis, with average flight prices from Louisiana averaging around $342.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $356. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $534. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Louisiana in the morning is the least expensive time of day to depart. momondo users have found prices as low as $375 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $394 per ticket.

What is the cheapest Louisiana to Lambert-St Louis flight route?

Fly from New Orleans Louis Armstrong to Lambert-St Louis for the best Louisiana - Lambert-St Louis flight prices

What cabin class options are available on Louisiana to Lambert-St Louis flights?

There is only 1 cabin class available to choose from on Louisiana to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Louisiana to St. Louis flights?

No. A direct flight is the cheapest option for a flight between Louisiana to St. Louis.

Cheap Louisiana to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisiana to St. Louis

Fastest flight time

1h 50m

Direct flights

Every day

Airports in St. Louis

1 airport
The fastest flight from Louisiana to St. Louis takes 1h 50m
Direct flights go from Louisiana to St. Louis every day.
There is 1 airport in St. Louis. From Louisiana there are direct flights to Lambert-St Louis (STL).
Search flight deals

  • When did momondo last update prices for flights from Louisiana to Lambert-St Louis Airport?

    Prices for flights from Louisiana to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Louisiana to Lambert-St Louis Airport?

  • How old do you have to be to fly from Louisiana to Lambert-St Louis 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 Louisiana to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Louisiana to St. Louis?

Best airlines flying from Louisiana to St. Louis

Compare and see reviews for airlines that fly from Louisiana to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $72Free CancellationRating
5.7
3,056 reviews
Search Frontier flights
American AirlinesPriceFrom $209Free CancellationRating
7.2
11,114 reviews
Search American Airlines flights
DeltaPriceFrom $214Free CancellationRating
7.9
8,039 reviews
Search Delta flights
United AirlinesPriceFrom $218Free CancellationRating
7.4
9,149 reviews
Search United Airlines flights
SouthwestPriceFrom $278Free CancellationRating
8.0
4,256 reviews
Search Southwest flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Fenton
Collinsville
St. Peters
Wentzville
Alton
Farmington
Clayton
Eureka
Edwardsville
Festus
Glencoe
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Louisiana to St. Louis?

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 St. Louis from Louisiana.

Can I find flights from Louisiana to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis from Louisiana with this policy.

How can momondo help me find flights from Louisiana to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Louisiana. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisiana to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from Louisiana are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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