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Cheap flights from St. Louis to Louisiana from $70

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 Louisiana departing on 5/3. 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

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Find the cheapest flights from St. Louis to Louisiana

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:16 pm - 8:51 pm
STL
-
MSY
8h 35m
1 stop
Frontier Logo
5:18 pm - 12:21 am
MSY
-
STL
7h 03m
1 stop
$140Frontier
Thu, May 7 - Sat, May 9
Frontier Logo
12:16 pm - 8:51 pm
STL
-
MSY
8h 35m
1 stop
Frontier Logo
9:46 pm - 8:23 pm
MSY
-
STL
22h 37m
1 stop
$141Frontier
Sun, May 10 - Thu, May 14
Frontier Logo
12:16 pm - 8:51 pm
STL
-
MSY
8h 35m
1 stop
Frontier Logo
5:18 pm - 12:21 am
MSY
-
STL
7h 03m
1 stop
$160Frontier
Thu, May 7 - Sat, May 9
Frontier Logo
12:36 pm - 8:51 pm
STL
-
MSY
8h 15m
1 stop
Frontier Logo
9:46 pm - 8:23 pm
MSY
-
STL
22h 37m
1 stop
$171Frontier
Sun, May 10 - Thu, May 14
Delta Logo
6:00 am - 10:44 am
STL
-
LFT
4h 44m
1 stop
Delta Logo
11:15 am - 6:00 pm
LFT
-
STL
6h 45m
1 stop
$283Delta
Sat, May 2 - Sat, May 9
United Airlines Logo
10:25 am - 5:48 pm
STL
-
LFT
7h 23m
2 stops
United Airlines Logo
9:40 am - 4:01 pm
LFT
-
STL
6h 21m
1 stop
$288United Airlines
Sat, May 2 - Sat, May 9
United Airlines Logo
9:00 am - 5:48 pm
STL
-
LFT
8h 48m
2 stops
United Airlines Logo
2:05 pm - 10:45 pm
LFT
-
STL
8h 40m
2 stops
$293United Airlines
Sat, May 2 - Sat, May 9
Delta Logo
5:15 pm - 10:03 pm
STL
-
BTR
4h 48m
1 stop
Delta Logo
4:00 pm - 9:29 pm
BTR
-
STL
5h 29m
1 stop
$305Delta
Sat, May 16 - Sat, May 23
American Airlines Logo
5:20 am - 10:03 am
STL
-
SHV
4h 43m
1 stop
American Airlines Logo
1:10 pm - 7:30 pm
SHV
-
STL
6h 20m
1 stop
$309American Airlines
Thu, May 7 - Tue, May 12
American Airlines Logo
5:20 am - 9:37 am
STL
-
AEX
4h 17m
1 stop
American Airlines Logo
10:07 am - 10:17 pm
AEX
-
STL
12h 10m
2 stops
$314American Airlines
Wed, Apr 15 - Sat, Apr 18

Frontier flights from St. Louis to Louisiana

Our best Frontier deals on St. Louis to Louisiana flight tickets
Frontier
May 7
STL12:16 pmLambert-St Louis
8h 35m
1 stop
MSY8:51 pmNew Orleans Louis Armstrong
May 9
MSY5:18 pmNew Orleans Louis Armstrong
7h 03m
1 stop
STL12:21 amLambert-St Louis
$140
Frontier
May 10
STL12:16 pmLambert-St Louis
8h 35m
1 stop
MSY8:51 pmNew Orleans Louis Armstrong
May 14
MSY9:46 pmNew Orleans Louis Armstrong
22h 37m
1 stop
STL8:23 pmLambert-St Louis
$141
Frontier
May 7
STL12:16 pmLambert-St Louis
8h 35m
1 stop
MSY8:51 pmNew Orleans Louis Armstrong
May 9
MSY5:18 pmNew Orleans Louis Armstrong
7h 03m
1 stop
STL12:21 amLambert-St Louis
$160

Delta flights from St. Louis to Louisiana

Our best Delta deals on St. Louis to Louisiana flight tickets
Delta
Apr 28
STL6:00 amLambert-St Louis
6h 15m
1 stop
MSY12:15 pmNew Orleans Louis Armstrong
May 5
MSY5:30 amNew Orleans Louis Armstrong
5h 04m
1 stop
STL10:34 amLambert-St Louis
$267
Delta
May 2
STL6:00 amLambert-St Louis
4h 44m
1 stop
LFT10:44 amLafayette Regional
May 9
LFT11:15 amLafayette Regional
6h 45m
1 stop
STL6:00 pmLambert-St Louis
$283
Delta
May 16
STL5:15 pmLambert-St Louis
4h 48m
1 stop
BTR10:03 pmBaton Rouge Ryan
May 23
BTR4:00 pmBaton Rouge Ryan
5h 29m
1 stop
STL9:29 pmLambert-St Louis
$305

momondo 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, momondo users made 832,500 searches. Data last updated April 3, 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

Cheapest round-trip

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Thu 5/7

12:16 pm-8:51 pm

1 stop8h 35m

New Orleans Louis Armstrong

Sat 5/9

5:18 pm-12:21 am

1 stop7h 03m

$140

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Sun 5/10

12:16 pm-8:51 pm

1 stop8h 35m

New Orleans Louis Armstrong

Thu 5/14

9:46 pm-8:23 pm

1 stop22h 37m

$141

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Thu 5/7

12:16 pm-8:51 pm

1 stop8h 35m

New Orleans Louis Armstrong

Sat 5/9

5:18 pm-12:21 am

1 stop7h 03m

$160

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Sun 5/10

12:36 pm-8:51 pm

1 stop8h 15m

New Orleans Louis Armstrong

Thu 5/14

9:46 pm-8:23 pm

1 stop22h 37m

$171

St. LouisLafayette

STL - LFT

STLLFT

Lambert-St Louis

Sat 5/2

6:00 am-10:44 am

1 stop4h 44m

Lafayette Regional

Sat 5/9

11:15 am-6:00 pm

1 stop6h 45m

$283

St. LouisLafayette

STL - LFT

STLLFT

Lambert-St Louis

Sat 5/2

10:25 am-5:48 pm

2 stops7h 23m

Lafayette Regional

Sat 5/9

9:40 am-4:01 pm

1 stop6h 21m

$288

St. LouisLafayette

STL - LFT

STLLFT

Lambert-St Louis

Sat 5/2

9:00 am-5:48 pm

2 stops8h 48m

Lafayette Regional

Sat 5/9

2:05 pm-10:45 pm

2 stops8h 40m

$293
Quickest round-trip

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Sat 5/16

5:15 pm-10:03 pm

1 stop4h 48m

Baton Rouge Ryan

Sat 5/23

4:00 pm-9:29 pm

1 stop5h 29m

$305

St. LouisShreveport

STL - SHV

STLSHV

Lambert-St Louis

Thu 5/7

5:20 am-10:03 am

1 stop4h 43m

Shreveport

Tue 5/12

1:10 pm-7:30 pm

1 stop6h 20m

$309

St. LouisAlexandria

STL - AEX

STLAEX

Lambert-St Louis

Wed 4/15

5:20 am-9:37 am

1 stop4h 17m

Alexandria

Sat 4/18

10:07 am-10:17 pm

2 stops12h 10m

$314

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 Louisiana from

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

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 Louisiana?

In general, September is the cheapest month to fly from St. Louis to Louisiana. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $307. The month of August is another great option to travel to Louisiana, with average flight prices from St. Louis averaging around $329.

What is the cheapest day to depart on your flight to Louisiana?

According to our data, Tuesday is the cheapest day to fly to Louisiana from St. Louis. The lowest ticket price found for a Tuesday departure recently was $371. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Louisiana on Thursday is $449.

What is the cheapest time of day to depart on your flight to Louisiana?

The cheapest time of day to fly to Louisiana is at noon when flights can be purchased for as low as $371. In contrast, the most expensive time of day to depart to Louisiana is in the morning when prices are around $425.

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

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

How far in advance should I book a flight to Louisiana?

You are more likely to see cheaper flights to Louisiana from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Louisiana for around $389 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Louisiana from St. Louis for as low as $277 on momondo.

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

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

Cheap St. Louis to Louisiana flight deals and tips

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

Best Price Found

$207

Fastest flight time

1h 45m

Direct flights

Every day

Airports in Louisiana

31 airports
The best one-way flight to Louisiana from St. Louis in the past 72 hours is $207. The best round-trip flight deal from St. Louis to Louisiana found on momondo in the last 72 hours is $317.
The fastest flight from St. Louis to Louisiana takes 1h 45m
Direct flights go from St. Louis to Louisiana every day.
There are 31 airports in Louisiana. From St. Louis there are direct flights to New Orleans Louis Armstrong (MSY).
Search flight deals

Frequently asked questions about flying from St. Louis to Louisiana

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

    Prices for flights from Lambert-St Louis Airport to Louisiana refresh daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Louisiana.

  • What documentation or ID do you need to fly to Louisiana?

    The travel and health documents you'll need for your trip to Louisiana may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Louisiana. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from St. Louis to Louisiana

Compare and see reviews for airlines that fly from St. Louis to Louisiana with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $82Free CancellationRating
5.7
3,000 reviews
Search Frontier flights
DeltaPriceFrom $93Free CancellationRating
7.9
8,374 reviews
Search Delta flights
American AirlinesPriceFrom $186Free CancellationRating
7.1
11,551 reviews
Search American Airlines flights
United AirlinesPriceFrom $196Free CancellationRating
7.4
9,538 reviews
Search United Airlines flights
SouthwestPriceFrom $240Free CancellationRating
8.0
4,344 reviews
Search Southwest flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Louisiana. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from St. Louis to Louisiana with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Louisiana from St. Louis.

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

Yes momondo offers price alerts on flights to Louisiana from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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