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Cheap flights from St. Louis to New Orleans from $55

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 12/8. 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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Cheap round-trip flights

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Frontier Logo
7:43 pm - 2:35 pmSTL-MSY
18h 52m1 stop
Frontier Logo
1:58 pm - 10:33 pmMSY-STL
8h 35m1 stop
$133Frontier
Find Deal
Wed, Jan 21 - Fri, Jan 23
Multiple Airlines Logo
5:11 pm - 7:43 pmSTL-MSY
26h 32m1 stop
Multiple Airlines Logo
3:30 pm - 10:02 amMSY-STL
18h 32m1 stop
$136Multiple Airlines
Find Deal
Tue, Jan 20 - Sun, Jan 25
Multiple Airlines Logo
10:42 am - 5:16 pmSTL-MSY
6h 34m1 stop
Multiple Airlines Logo
7:20 pm - 10:33 pmMSY-STL
27h 13m1 stop
$139Multiple Airlines
Find Deal
Thu, Jan 22 - Tue, Jan 27
Multiple Airlines Logo
2:47 pm - 9:42 pmSTL-MSY
6h 55m1 stop
Multiple Airlines Logo
1:52 pm - 10:33 pmMSY-STL
8h 41m1 stop
$140Multiple Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
American Airlines Logo
11:55 am - 5:08 pmSTL-MSY
5h 13m1 stop
American Airlines Logo
11:05 am - 4:14 pmMSY-STL
5h 09m1 stop
$167American Airlines
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Thu, Jan 8 - Mon, Jan 12
Delta Logo
10:00 am - 4:21 pmSTL-MSY
6h 21m1 stop
Delta Logo
6:30 am - 10:50 amMSY-STL
4h 20m1 stop
$177Delta
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Mon, Jan 19 - Sun, Jan 25
Spirit Airlines Logo
12:20 pm - 10:05 pmSTL-MSY
9h 45m1 stop
Spirit Airlines Logo
5:10 am - 11:01 amMSY-STL
5h 51m1 stop
$182Spirit Airlines
Find Deal
Thu, Jan 29 - Sun, Feb 1
Delta Logo
2:02 pm - 8:07 pmSTL-MSY
6h 05m1 stop
Delta Logo
6:54 pm - 11:42 pmMSY-STL
4h 48m1 stop
$187Delta
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Tue, Dec 16 - Tue, Dec 23
Spirit Airlines Logo
6:21 pm - 8:35 amSTL-MSY
14h 14m1 stop
Spirit Airlines Logo
7:24 pm - 8:57 amMSY-STL
13h 33m1 stop
$201Spirit Airlines
Find Deal
Sun, Nov 16 - Fri, Nov 21
United Airlines Logo
6:00 am - 10:52 amSTL-MSY
4h 52m1 stop
United Airlines Logo
3:59 pm - 10:00 pmMSY-STL
6h 01m1 stop
$271United Airlines
Find Deal
Fri, Jan 23 - Fri, Jan 23

Frontier flights from St. Louis to New Orleans

Our best Frontier deals on St. Louis to New Orleans flight tickets
Frontier
Jan 21
STL7:43 pmLambert-St Louis
18h 52m
1 stop
MSY2:35 pmNew Orleans Louis Armstrong
Jan 23
MSY1:58 pmNew Orleans Louis Armstrong
8h 35m
1 stop
STL10:33 pmLambert-St Louis
$133
Find similar
Frontier
Dec 30
STL10:48 amLambert-St Louis
5h 07m
1 stop
MSY3:55 pmNew Orleans Louis Armstrong
Jan 1
MSY3:39 pmNew Orleans Louis Armstrong
18h 23m
1 stop
STL10:02 amLambert-St Louis
$206
Find similar
Frontier
Dec 14
STL10:42 amLambert-St Louis
5h 35m
1 stop
MSY4:17 pmNew Orleans Louis Armstrong
Dec 20
MSY5:04 pmNew Orleans Louis Armstrong
29h 29m
1 stop
STL10:33 pmLambert-St Louis
$213
Find similar

Delta flights from St. Louis to New Orleans

Our best Delta deals on St. Louis to New Orleans flight tickets
Delta
Jan 19
STL10:00 amLambert-St Louis
6h 21m
1 stop
MSY4:21 pmNew Orleans Louis Armstrong
Jan 25
MSY6:30 amNew Orleans Louis Armstrong
4h 20m
1 stop
STL10:50 amLambert-St Louis
$177
Find similar
Delta
Dec 16
STL2:02 pmLambert-St Louis
6h 05m
1 stop
MSY8:07 pmNew Orleans Louis Armstrong
Dec 23
MSY6:54 pmNew Orleans Louis Armstrong
4h 48m
1 stop
STL11:42 pmLambert-St Louis
$187
Find similar
Delta
Jan 25
STL6:00 amLambert-St Louis
4h 27m
1 stop
MSY10:27 amNew Orleans Louis Armstrong
Jan 25
MSY7:10 pmNew Orleans Louis Armstrong
4h 30m
1 stop
STL11:40 pmLambert-St Louis
$277
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 October 26, 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

Wed 1/21

7:43 pm-2:35 pm

1 stop18h 52m

New Orleans Louis Armstrong

Fri 1/23

1:58 pm-10:33 pm

1 stop8h 35m

$133

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Tue 1/20

5:11 pm-7:43 pm

1 stop26h 32m

New Orleans Louis Armstrong

Sun 1/25

3:30 pm-10:02 am

1 stop18h 32m

$136

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Thu 1/22

10:42 am-5:16 pm

1 stop6h 34m

New Orleans Louis Armstrong

Tue 1/27

7:20 pm-10:33 pm

1 stop27h 13m

$139

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Thu 12/4

2:47 pm-9:42 pm

1 stop6h 55m

New Orleans Louis Armstrong

Mon 12/8

1:52 pm-10:33 pm

1 stop8h 41m

$140

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Thu 1/8

11:55 am-5:08 pm

1 stop5h 13m

New Orleans Louis Armstrong

Mon 1/12

11:05 am-4:14 pm

1 stop5h 09m

$167

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Mon 1/19

10:00 am-4:21 pm

1 stop6h 21m

New Orleans Louis Armstrong

Sun 1/25

6:30 am-10:50 am

1 stop4h 20m

$177

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Thu 1/29

12:20 pm-10:05 pm

1 stop9h 45m

New Orleans Louis Armstrong

Sun 2/1

5:10 am-11:01 am

1 stop5h 51m

$182

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Tue 12/16

2:02 pm-8:07 pm

1 stop6h 05m

New Orleans Louis Armstrong

Tue 12/23

6:54 pm-11:42 pm

1 stop4h 48m

$187

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Sun 11/16

6:21 pm-8:35 am

1 stop14h 14m

New Orleans Louis Armstrong

Fri 11/21

7:24 pm-8:57 am

1 stop13h 33m

$201

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Fri 1/23

6:00 am-10:52 am

1 stop4h 52m

New Orleans Louis Armstrong

Fri 1/23

3:59 pm-10:00 pm

1 stop6h 01m

$271

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 November. Flight prices, which tend to average around $293, 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 November, then departing from St. Louis during the month September is also very affordable. Most momondo users find prices during this month for around $307.

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 Monday when prices can be found for as low as $350. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to New Orleans for around $426.

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 $371. In the evening is when there is more demand to fly to New Orleans, so prices are often more expensive at around $424 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 $380 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 $281 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 14% 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 October 2025, prices for St. Louis to New Orleans flights are approximately 71% 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

$148

Fastest flight time

1h 45m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in New Orleans

1 airport
The best one-way flight to New Orleans from St. Louis in the past 72 hours is $148. The best round-trip flight deal from St. Louis to New Orleans found on momondo in the last 72 hours is $364.
The fastest flight from St. Louis to New Orleans takes 1h 45m
Direct flights go from St. Louis to New Orleans on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Southwest.
There is 1 airport near New Orleans: 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 4h 27m 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 $127Free CancellationRating
5.8
3,123 reviews
Search Frontier flights
United AirlinesPriceFrom $196Free CancellationRating
7.4
8,999 reviews
Search United Airlines flights
DeltaPriceFrom $196Free CancellationRating
7.9
7,997 reviews
Search Delta flights
SouthwestPriceFrom $240Free CancellationRating
8.0
4,235 reviews
Search Southwest flights
American AirlinesPriceFrom $243Free CancellationRating
7.2
11,030 reviews
Search American Airlines 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 $410. 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
Covington
Gonzales
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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