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Cheap flights from St. Louis to New Orleans from $79

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 New Orleans departing on 1/28. 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 St. Louis to New Orleans

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
2:51 pm - 12:24 am
STL
-
MSY
9h 33m1 stop
Frontier Logo
9:51 pm - 10:27 pm
MSY
-
STL
24h 36m1 stop
$146Frontier
Sat, Feb 14 - Mon, Feb 23
Multiple Airlines Logo
5:11 pm - 9:29 pm
STL
-
MSY
28h 18m2 stops
Multiple Airlines Logo
4:49 pm - 11:33 pm
MSY
-
STL
6h 44m1 stop
$156Multiple Airlines
Mon, Jan 19 - Thu, Jan 22
Frontier Logo
5:42 pm - 10:07 am
STL
-
MSY
16h 25m1 stop
Frontier Logo
7:38 pm - 2:46 pm
MSY
-
STL
19h 08m1 stop
$157Frontier
Wed, Jan 21 - Fri, Jan 30
Frontier Logo
2:51 pm - 12:24 am
STL
-
MSY
9h 33m1 stop
Frontier Logo
1:38 pm - 11:59 pm
MSY
-
STL
10h 21m1 stop
$160Frontier
Sat, Feb 14 - Sat, Feb 21
Frontier Logo
3:46 pm - 6:48 pm
STL
-
MSY
27h 02m1 stop
Frontier Logo
7:38 pm - 2:46 pm
MSY
-
STL
19h 08m1 stop
$163Frontier
Sat, Jan 24 - Fri, Jan 30
Multiple Airlines Logo
5:42 pm - 10:07 am
STL
-
MSY
16h 25m1 stop
Multiple Airlines Logo
7:00 am - 11:33 pm
MSY
-
STL
16h 33m1 stop
$164Multiple Airlines
Wed, Jan 21 - Tue, Feb 3
Multiple Airlines Logo
3:46 pm - 6:48 pm
STL
-
MSY
27h 02m1 stop
Multiple Airlines Logo
8:36 pm - 10:23 am
MSY
-
STL
13h 47m1 stop
$170Multiple Airlines
Sat, Jan 24 - Thu, Jan 29
Multiple Airlines Logo
5:42 pm - 9:06 am
STL
-
MSY
15h 24m1 stop
Multiple Airlines Logo
8:36 pm - 10:23 am
MSY
-
STL
13h 47m1 stop
$173Multiple Airlines
Sun, Jan 25 - Thu, Jan 29
Frontier Logo
5:42 pm - 10:07 am
STL
-
MSY
16h 25m1 stop
Frontier Logo
9:53 am - 9:21 am
MSY
-
STL
23h 28m1 stop
$174Frontier
Wed, Jan 21 - Sun, Feb 1
Multiple Airlines Logo
5:42 pm - 10:07 am
STL
-
MSY
16h 25m1 stop
Multiple Airlines Logo
6:05 am - 11:33 pm
MSY
-
STL
17h 28m2 stops
$175Multiple Airlines
Wed, Jan 21 - Thu, Jan 29

United Airlines flights from St. Louis to New Orleans

Our best United Airlines deals on St. Louis to New Orleans flight tickets
United Airlines
Jan 3
STL10:30 amLambert-St Louis
5h 31m
1 stop
MSY4:01 pmNew Orleans Louis Armstrong
Jan 10
MSY3:59 pmNew Orleans Louis Armstrong
6h 01m
1 stop
STL10:00 pmLambert-St Louis
$375
Find similar
United Airlines
Jan 7
STL1:15 pmLambert-St Louis
8h 36m
2 stops
MSY9:51 pmNew Orleans Louis Armstrong
Jan 10
MSY2:26 pmNew Orleans Louis Armstrong
6h 47m
1 stop
STL9:13 pmLambert-St Louis
$426
Find similar
United Airlines
Jan 7
STL11:20 amLambert-St Louis
11h 38m
2 stops
MSY10:58 pmNew Orleans Louis Armstrong
Jan 10
MSY5:35 pmNew Orleans Louis Armstrong
4h 25m
1 stop
STL10:00 pmLambert-St Louis
$450
Find similar

Frontier flights from St. Louis to New Orleans

Our best Frontier deals on St. Louis to New Orleans flight tickets
Frontier
Feb 14
STL2:51 pmLambert-St Louis
9h 33m
1 stop
MSY12:24 amNew Orleans Louis Armstrong
Feb 23
MSY9:51 pmNew Orleans Louis Armstrong
24h 36m
1 stop
STL10:27 pmLambert-St Louis
$146
Find similar
Frontier
Jan 21
STL5:42 pmLambert-St Louis
16h 25m
1 stop
MSY10:07 amNew Orleans Louis Armstrong
Jan 30
MSY7:38 pmNew Orleans Louis Armstrong
19h 08m
1 stop
STL2:46 pmLambert-St Louis
$157
Find similar
Frontier
Feb 14
STL2:51 pmLambert-St Louis
9h 33m
1 stop
MSY12:24 amNew Orleans Louis Armstrong
Feb 21
MSY1:38 pmNew Orleans Louis Armstrong
10h 21m
1 stop
STL11:59 pmLambert-St Louis
$160
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to New Orleans 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 December 29, 2025.
Use the filters below to find and compare flights from St. Louis to New Orleans that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Sat 2/14

2:51 pm-12:24 am

1 stop9h 33m

New Orleans Louis Armstrong

Mon 2/23

9:51 pm-10:27 pm

1 stop24h 36m

$146

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Mon 1/19

5:11 pm-9:29 pm

2 stops28h 18m

New Orleans Louis Armstrong

Thu 1/22

4:49 pm-11:33 pm

1 stop6h 44m

$156

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Wed 1/21

5:42 pm-10:07 am

1 stop16h 25m

New Orleans Louis Armstrong

Fri 1/30

7:38 pm-2:46 pm

1 stop19h 08m

$157

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Sat 2/14

2:51 pm-12:24 am

1 stop9h 33m

New Orleans Louis Armstrong

Sat 2/21

1:38 pm-11:59 pm

1 stop10h 21m

$160

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Sat 1/24

3:46 pm-6:48 pm

1 stop27h 02m

New Orleans Louis Armstrong

Fri 1/30

7:38 pm-2:46 pm

1 stop19h 08m

$163

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Wed 1/21

5:42 pm-10:07 am

1 stop16h 25m

New Orleans Louis Armstrong

Tue 2/3

7:00 am-11:33 pm

1 stop16h 33m

$164

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Sat 1/24

3:46 pm-6:48 pm

1 stop27h 02m

New Orleans Louis Armstrong

Thu 1/29

8:36 pm-10:23 am

1 stop13h 47m

$170

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Sun 1/25

5:42 pm-9:06 am

1 stop15h 24m

New Orleans Louis Armstrong

Thu 1/29

8:36 pm-10:23 am

1 stop13h 47m

$173

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Wed 1/21

5:42 pm-10:07 am

1 stop16h 25m

New Orleans Louis Armstrong

Sun 2/1

9:53 am-9:21 am

1 stop23h 28m

$174

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Wed 1/21

5:42 pm-10:07 am

1 stop16h 25m

New Orleans Louis Armstrong

Thu 1/29

6:05 am-11:33 pm

2 stops17h 28m

$175

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 New Orleans from

How to get the cheapest flight ticket from St. Louis to New Orleans

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 New Orleans?

The cheapest month to fly to New Orleans from St. Louis is in September. Flight prices, which tend to average around $310, are often lower during this time because this is during the off-season. If you are unable to visit New Orleans during the month of September, then departing from St. Louis during the month June is also very affordable. Most momondo users find prices during this month for around $352.

What is the cheapest day to depart on your flight to New Orleans?

The cheapest day to depart from St. Louis to New Orleans is on a Tuesday when prices can be found for as low as $330. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to New Orleans for around $454.

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

The cheapest time of day to fly to New Orleans is at noon when flights can be purchased for as low as $378. In the evening is when there is more demand to fly to New Orleans, so prices are often more expensive at around $426 per ticket.

What is the cheapest Lambert-St Louis to New Orleans Louis Armstrong flight route?

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

How far in advance should I book a flight to New Orleans?

You are more likely to see cheaper flights to New Orleans from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to New Orleans for around $400 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to New Orleans from St. Louis for as low as $327 on momondo.

What cabin class options are available on Lambert-St Louis to New Orleans Louis Armstrong flights?

There is only 1 cabin class available to choose from on Lambert-St Louis to New Orleans Louis Armstrong 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 St. Louis to New Orleans flights?

You could potentially save up to 23% on your flight if you consider stops on a St. Louis to New Orleans flight.

How have St. Louis to New Orleans flight prices changed over time?

As of December 2025, prices for St. Louis to New Orleans flights are approximately 116% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to New Orleans

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to New Orleans according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to New Orleans (STL to MSY) flight deals and tips

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

Best Price Found

$415

Fastest flight time

1h 45m

Direct flights

Every day

Airports in New Orleans

1 airport
The best flight deal from St. Louis to New Orleans found on momondo in the last 72 hours is $415
The fastest flight from St. Louis to New Orleans takes 1h 45m
Direct flights go from St. Louis to New Orleans every day.
There is 1 airport in New Orleans. From St. Louis there are direct flights to New Orleans Louis Armstrong (MSY).
Search flight deals

  • How far is Lambert-St Louis to New Orleans Louis Armstrong by plane?

    The distance between Lambert-St Louis and New Orleans Louis Armstrong is about 599.0 mi. Typically, this will take 1h 45m by plane in normal conditions.

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

    Prices for flights from Lambert-St Louis Airport to New Orleans Louis Armstrong Airport are updated daily.

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

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

    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 New Orleans Louis Armstrong Airport.

  • What documentation or ID do you need to fly to New Orleans Louis Armstrong Airport?

    The travel and health documents you'll need for your trip to New Orleans Louis Armstrong Airport 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 New Orleans Louis Armstrong Airport. 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 New Orleans?

  • What is the most popular airline from St. Louis to New Orleans?

Best airlines flying from St. Louis to New Orleans

Compare and see reviews for airlines that fly from St. Louis to New Orleans with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $82Free CancellationRating
5.7
3,065 reviews
Search Frontier flights
DeltaPriceFrom $98Free CancellationRating
7.9
8,014 reviews
Search Delta flights
United AirlinesPriceFrom $196Free CancellationRating
7.4
9,121 reviews
Search United Airlines flights
American AirlinesPriceFrom $236Free CancellationRating
7.2
11,072 reviews
Search American Airlines flights
SouthwestPriceFrom $240Free CancellationRating
8.0
4,251 reviews
Search Southwest flights

  • Southwest Flights From St. Louis to New Orleans

    Southwest is one of the most popular airlines flying from St. Louis to New Orleans, operating 17 flights/week on average for this route. A good Southwest flight deal for St. Louis to New Orleans starts from $240 round-trip, up to an average price of $416. Our users have rated Southwest at 8.0/10.

Traveling to a place near New Orleans?

Book flights to New Orleans if you plan to visit one of these locations
Metairie
Hammond
Slidell
Houma
Kenner
Gonzales
Covington
Gretna
Thibodaux
Lockport
Springfield

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to New Orleans. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to New Orleans from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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

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 New Orleans from St. Louis.

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

Yes momondo offers price alerts on flights to New Orleans 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.

An easier way to manage your New Orleans trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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