What is the cheapest airline that flies from Lambert-St Louis to New Orleans Louis Armstrong?

Frontier, American Airlines, and Spirit Airlines are the most popular carriers operating from Lambert-St Louis to New Orleans Louis Armstrong

How many flights depart from St. Louis to New Orleans on average per week?

15 flights are operational weekly from St. Louis to New Orleans as of November 2025. The most popular departure day for this route is Mon, with 20% of flights per week taking off on this day.

What airlines fly to New Orleans?

Southwest, American Airlines and Delta are the top three most popular airlines that fly to New Orleans from St. Louis according to our data. Southwest is the first choice among our users, with 53% of people opting to fly with this airline when traveling to New Orleans. Keep in mind that there are 5 different airlines that fly to New Orleans on a routine basis, so you have a few additional options to choose from.

How many flights depart from St. Louis to New Orleans on average per day?

The number of flights available between St. Louis and New Orleans is 2 per day as of November 2025. The most frequent departure time is 8:00AM, with 41% of daily flights leaving at noon.

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?

There are 5 operators available for flights from Lambert-St Louis Airport to New Orleans Louis Armstrong Airport as of November 2025.

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.

$55 Cheap Flights from St. Louis to New Orleans in 2025/26

Q: What is the typical price of a round-trip flight between St. Louis and New Orleans?

Prices are currently low for flights on this route. Typical prices usually range from $250 to $457. The lowest price recently found on this route was $111.

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7:43 pm - 12:24 pmSTL-MSY

16h 41m1 stop

2:02 pm - 8:59 amMSY-STL

18h 57m1 stop

$133Frontier

Find Deal

Wed, Dec 3 - Sun, Dec 7

5:11 pm - 11:55 pmSTL-MSY

6h 44m1 stop

7:00 am - 10:33 pmMSY-STL

15h 33m1 stop

$140Multiple Airlines

Find Deal

Tue, Jan 6 - Tue, Feb 3

2:47 pm - 9:42 pmSTL-MSY

6h 55m1 stop

2:02 pm - 10:33 pmMSY-STL

8h 31m1 stop

$141Multiple Airlines

Find Deal

Thu, Dec 4 - Thu, Dec 11

10:42 am - 4:27 pmSTL-MSY

5h 45m1 stop

2:02 pm - 10:33 pmMSY-STL

8h 31m1 stop

$146Frontier

Find Deal

Fri, Dec 5 - Sun, Dec 7

11:34 am - 4:19 pmSTL-MSY

4h 45m1 stop

5:15 am - 10:36 amMSY-STL

5h 21m1 stop

$179American Airlines

Find Deal

Thu, Dec 11 - Mon, Dec 15

12:20 pm - 10:05 pmSTL-MSY

9h 45m1 stop

5:10 am - 11:01 amMSY-STL

5h 51m1 stop

$194Spirit Airlines

Find Deal

Thu, Jan 29 - Sun, Feb 1

12:20 pm - 11:05 pmSTL-MSY

10h 45m1 stop

5:10 am - 11:01 amMSY-STL

5h 51m1 stop

$214Spirit Airlines

Find Deal

Thu, Feb 19 - Sun, Feb 22

9:30 am - 2:22 pmSTL-MSY

4h 52m1 stop

11:38 am - 5:10 pmMSY-STL

5h 32m1 stop

$227Delta

Find Deal

Tue, Dec 9 - Wed, Dec 10

8:13 am - 1:31 pmSTL-MSY

5h 18m1 stop

4:04 pm - 9:15 pmMSY-STL

5h 11m1 stop

$229American Airlines

Find Deal

Mon, Jan 19 - Thu, Jan 22

8:15 am - 10:05 amSTL-MSY

1h 50mnonstop

4:15 pm - 10:10 pmMSY-STL

5h 55m1 stop

$274Southwest

Find Deal

Tue, Dec 9 - Wed, Dec 10

American Airlines flights from St. Louis to New Orleans

Our best American Airlines deals on St. Louis to New Orleans flight tickets

American Airlines

Dec 11

STL11:34 amLambert-St Louis

4h 45m

1 stop

MSY4:19 pmNew Orleans Louis Armstrong

Dec 15

MSY5:15 amNew Orleans Louis Armstrong

5h 21m

1 stop

STL10:36 amLambert-St Louis

$179

Find similar

American Airlines

Jan 19

STL8:13 amLambert-St Louis

5h 18m

1 stop

MSY1:31 pmNew Orleans Louis Armstrong

Jan 22

MSY4:04 pmNew Orleans Louis Armstrong

5h 11m

1 stop

STL9:15 pmLambert-St Louis

$229

Find similar

American Airlines

Feb 23

STL5:14 amLambert-St Louis

4h 36m

1 stop

MSY9:50 amNew Orleans Louis Armstrong

Feb 26

MSY6:58 amNew Orleans Louis Armstrong

5h 48m

1 stop

STL12:46 pmLambert-St Louis

$249

Find similar

United Airlines flights from St. Louis to New Orleans

Our best United Airlines deals on St. Louis to New Orleans flight tickets

United Airlines

Nov 13

STL6:15 amLambert-St Louis

4h 44m

1 stop

MSY10:59 amNew Orleans Louis Armstrong

Nov 21

MSY5:15 amNew Orleans Louis Armstrong

10h 31m

2 stops

STL3:46 pmLambert-St Louis

$619

Find similar

United Airlines

Nov 13

STL10:00 amLambert-St Louis

11h 40m

2 stops

MSY9:40 pmNew Orleans Louis Armstrong

Nov 21

MSY5:15 amNew Orleans Louis Armstrong

10h 31m

2 stops

STL3:46 pmLambert-St Louis

$624

Find similar

United Airlines

Nov 13

STL11:05 amLambert-St Louis

10h 35m

2 stops

MSY9:40 pmNew Orleans Louis Armstrong

Nov 21

MSY5:15 amNew Orleans Louis Armstrong

10h 31m

2 stops

STL3:46 pmLambert-St Louis

$665

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Wed 12/3

7:43 pm-12:24 pm

1 stop16h 41m

New Orleans Louis Armstrong

Sun 12/7

2:02 pm-8:59 am

1 stop18h 57m

$133

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Tue 1/6

5:11 pm-11:55 pm

1 stop6h 44m

New Orleans Louis Armstrong

Tue 2/3

7:00 am-10:33 pm

1 stop15h 33m

$140

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

Thu 12/11

2:02 pm-10:33 pm

1 stop8h 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

Sun 12/7

2:02 pm-10:33 pm

1 stop8h 31m

$146

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Thu 12/11

11:34 am-4:19 pm

1 stop4h 45m

New Orleans Louis Armstrong

Mon 12/15

5:15 am-10:36 am

1 stop5h 21m

$179

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

$194

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Thu 2/19

12:20 pm-11:05 pm

1 stop10h 45m

New Orleans Louis Armstrong

Sun 2/22

5:10 am-11:01 am

1 stop5h 51m

$214

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Tue 12/9

9:30 am-2:22 pm

1 stop4h 52m

New Orleans Louis Armstrong

Wed 12/10

11:38 am-5:10 pm

1 stop5h 32m

$227

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Mon 1/19

8:13 am-1:31 pm

1 stop5h 18m

New Orleans Louis Armstrong

Thu 1/22

4:04 pm-9:15 pm

1 stop5h 11m

$229

St. LouisNew Orleans

STL - MSY

STLMSY

Lambert-St Louis

Tue 12/9

8:15 am-10:05 am

Nonstop1h 50m

New Orleans Louis Armstrong

Wed 12/10

4:15 pm-10:10 pm

1 stop5h 55m

$274

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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

Prices

Airlines

Other information

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 November 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 $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 $383 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 $282 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 45% 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	Tue, 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 $383.

The fastest flight from St. Louis to New Orleans takes 1h 45m

Direct flights go from St. Louis to New Orleans on Tuesday, 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 1h 50m 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?
There are 5 operators available for flights from Lambert-St Louis Airport to New Orleans Louis Armstrong Airport as of November 2025.
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?
Based on momondo bookings for flights between St. Louis and New Orleans, the leading plane model is Boeing 737 MAX 8, making up 41.48% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 34.07%, Boeing 737-700 Passenger/BBJ1 (winglets) with 15.56%, and Airbus A321 (sharklets) with 2.22%.
What is the most popular airline from St. Louis to New Orleans?
Based on momondo bookings for flights between St. Louis and New Orleans, the leading airline is Southwest, making up 69% of the total bookings. Other popular airlines include American Airlines with 12%, Delta with 8%, and United Airlines with 7%.

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
Frontier	PriceFrom $127	Free Cancellation	Rating 5.8 3,115 reviews	Search Frontier flights
United Airlines	PriceFrom $196	Free Cancellation	Rating 7.4 9,007 reviews	Search United Airlines flights
Delta	PriceFrom $196	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights
Southwest	PriceFrom $240	Free Cancellation	Rating 8.0 4,241 reviews	Search Southwest flights
American Airlines	PriceFrom $243	Free Cancellation	Rating 7.2 11,040 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 15 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.

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.

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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.

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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?

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?

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 45% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Lambert-St Louis to New Orleans Louis Armstrong?

Frontier, American Airlines, and Spirit Airlines are the most popular carriers operating from Lambert-St Louis to New Orleans Louis Armstrong

What airlines fly to New Orleans?

How many flights depart from St. Louis to New Orleans on average per day?

The number of flights available between St. Louis and New Orleans is 2 per day as of November 2025. The most frequent departure time is 8:00AM, with 41% of daily flights leaving at noon.

How many flights depart from St. Louis to New Orleans on average per week?

15 flights are operational weekly from St. Louis to New Orleans as of November 2025. The most popular departure day for this route is Mon, with 20% of flights per week taking off on this day.

When to book flights from St. Louis to New Orleans

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

Fastest flight time

Direct flights

Airports in New Orleans

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

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

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?

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

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

Southwest Flights From St. Louis to New Orleans

Traveling to a place near New Orleans?

Why use momondo?

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

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

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

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

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Louisiana