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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 12/15. 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
10:42 am - 4:27 pmSTL-MSY
5h 45m1 stop
Frontier Logo
8:14 am - 9:45 amMSY-STL
25h 31m1 stop
$141Frontier
Find Deal
Thu, Dec 18 - Sun, Dec 21
Frontier Logo
10:42 am - 4:27 pmSTL-MSY
5h 45m1 stop
Frontier Logo
1:52 pm - 10:33 pmMSY-STL
8h 41m1 stop
$142Frontier
Find Deal
Fri, Dec 5 - Mon, Dec 8
Frontier Logo
10:42 am - 4:27 pmSTL-MSY
5h 45m1 stop
Frontier Logo
8:14 am - 9:45 amMSY-STL
25h 31m1 stop
$143Frontier
Find Deal
Thu, Dec 18 - Sun, Dec 21
Frontier Logo
4:45 pm - 10:07 amSTL-MSY
17h 22m1 stop
Frontier Logo
10:01 am - 11:33 pmMSY-STL
13h 32m1 stop
$155Frontier
Find Deal
Wed, Jan 28 - Mon, Feb 2
Multiple Airlines Logo
10:42 am - 4:27 pmSTL-MSY
5h 45m1 stop
Multiple Airlines Logo
4:58 pm - 9:47 amMSY-STL
16h 49m1 stop
$177Multiple Airlines
Find Deal
Fri, Dec 5 - Sat, Dec 13
Multiple Airlines Logo
4:45 pm - 10:07 amSTL-MSY
17h 22m1 stop
Multiple Airlines Logo
10:47 am - 11:33 pmMSY-STL
12h 46m2 stops
$185Multiple Airlines
Find Deal
Wed, Jan 28 - Mon, Feb 2
Multiple Airlines Logo
10:42 am - 4:27 pmSTL-MSY
5h 45m1 stop
Multiple Airlines Logo
4:35 pm - 9:52 amMSY-STL
17h 17m1 stop
$189Multiple Airlines
Find Deal
Fri, Dec 5 - Sun, Dec 14
Multiple Airlines Logo
4:45 pm - 10:07 amSTL-MSY
17h 22m1 stop
Multiple Airlines Logo
7:00 am - 11:33 pmMSY-STL
16h 33m1 stop
$193Multiple Airlines
Find Deal
Thu, Jan 29 - Tue, Feb 3
Frontier Logo
10:42 am - 4:27 pmSTL-MSY
5h 45m1 stop
Frontier Logo
5:22 pm - 10:33 pmMSY-STL
29h 11m2 stops
$194Frontier
Find Deal
Fri, Dec 5 - Mon, Dec 8
Frontier Logo
10:42 am - 4:27 pmSTL-MSY
5h 45m1 stop
Frontier Logo
5:22 pm - 10:33 pmMSY-STL
29h 11m2 stops
$195Frontier
Find Deal
Fri, Dec 5 - Mon, Dec 8

Frontier flights from St. Louis to New Orleans

Our best Frontier deals on St. Louis to New Orleans flight tickets
Frontier
Dec 18
STL10:42 amLambert-St Louis
5h 45m
1 stop
MSY4:27 pmNew Orleans Louis Armstrong
Dec 21
MSY8:14 amNew Orleans Louis Armstrong
25h 31m
1 stop
STL9:45 amLambert-St Louis
$141
Find similar
Frontier
Dec 5
STL10:42 amLambert-St Louis
5h 45m
1 stop
MSY4:27 pmNew Orleans Louis Armstrong
Dec 8
MSY1:52 pmNew Orleans Louis Armstrong
8h 41m
1 stop
STL10:33 pmLambert-St Louis
$142
Find similar
Frontier
Dec 18
STL10:42 amLambert-St Louis
5h 45m
1 stop
MSY4:27 pmNew Orleans Louis Armstrong
Dec 21
MSY8:14 amNew Orleans Louis Armstrong
25h 31m
1 stop
STL9:45 amLambert-St Louis
$143
Find similar

American Airlines flights from St. Louis to New Orleans

Our best American Airlines deals on St. Louis to New Orleans flight tickets
American Airlines
Nov 24
STL9:36 amLambert-St Louis
9h 19m
1 stop
MSY6:55 pmNew Orleans Louis Armstrong
Nov 27
MSY6:06 amNew Orleans Louis Armstrong
10h 19m
1 stop
STL4:25 pmLambert-St Louis
$234
Find similar
American Airlines
Feb 11
STL5:04 pmLambert-St Louis
5h 55m
1 stop
MSY10:59 pmNew Orleans Louis Armstrong
Feb 19
MSY5:40 amNew Orleans Louis Armstrong
11h 25m
1 stop
STL5:05 pmLambert-St Louis
$295
Find similar
American Airlines
Feb 19
STL10:03 amLambert-St Louis
11h 20m
1 stop
MSY9:23 pmNew Orleans Louis Armstrong
Feb 22
MSY6:58 amNew Orleans Louis Armstrong
5h 48m
1 stop
STL12:46 pmLambert-St Louis
$329
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 November 16, 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

Thu 12/18

10:42 am-4:27 pm

1 stop5h 45m

New Orleans Louis Armstrong

Sun 12/21

8:14 am-9:45 am

1 stop25h 31m

$141

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Fri 12/5

10:42 am-4:27 pm

1 stop5h 45m

New Orleans Louis Armstrong

Mon 12/8

1:52 pm-10:33 pm

1 stop8h 41m

$142

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Thu 12/18

10:42 am-4:27 pm

1 stop5h 45m

New Orleans Louis Armstrong

Sun 12/21

8:14 am-9:45 am

1 stop25h 31m

$143

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Wed 1/28

4:45 pm-10:07 am

1 stop17h 22m

New Orleans Louis Armstrong

Mon 2/2

10:01 am-11:33 pm

1 stop13h 32m

$155

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Fri 12/5

10:42 am-4:27 pm

1 stop5h 45m

New Orleans Louis Armstrong

Sat 12/13

4:58 pm-9:47 am

1 stop16h 49m

$177

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Wed 1/28

4:45 pm-10:07 am

1 stop17h 22m

New Orleans Louis Armstrong

Mon 2/2

10:47 am-11:33 pm

2 stops12h 46m

$185

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Fri 12/5

10:42 am-4:27 pm

1 stop5h 45m

New Orleans Louis Armstrong

Sun 12/14

4:35 pm-9:52 am

1 stop17h 17m

$189

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Thu 1/29

4:45 pm-10:07 am

1 stop17h 22m

New Orleans Louis Armstrong

Tue 2/3

7:00 am-11:33 pm

1 stop16h 33m

$193

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Fri 12/5

10:42 am-4:27 pm

1 stop5h 45m

New Orleans Louis Armstrong

Mon 12/8

5:22 pm-10:33 pm

2 stops29h 11m

$194

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Fri 12/5

10:42 am-4:27 pm

1 stop5h 45m

New Orleans Louis Armstrong

Mon 12/8

5:22 pm-10:33 pm

2 stops29h 11m

$195

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 typical price of a round-trip flight between St. Louis and New Orleans?

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 $307, 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 $351.

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 $345. 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 $461.

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 $445 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 $394 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 $335 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 November 2025, prices for St. Louis to New Orleans flights are approximately 37% 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

Every day

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 $383.
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 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 5h 07m 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
3,110 reviews
Search Frontier flights
United AirlinesPriceFrom $196Free CancellationRating
7.4
9,017 reviews
Search United Airlines flights
DeltaPriceFrom $196Free CancellationRating
7.9
8,010 reviews
Search Delta flights
SouthwestPriceFrom $240Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
American AirlinesPriceFrom $243Free CancellationRating
7.2
11,051 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 6 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 $414. 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
Houma
Slidell
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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