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Cheap flights from New Orleans to St. Louis from $74

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from New Orleans to St. Louis departing on 4/24. 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 New Orleans to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
3:36 pm - 7:21 pm
MSY
-
STL
27h 45m
1 stop
Frontier Logo
4:59 pm - 10:41 am
STL
-
MSY
17h 42m
1 stop
$171Frontier
Thu, Apr 23 - Sun, Apr 26
Frontier Logo
3:24 pm - 9:48 am
MSY
-
STL
18h 24m
1 stop
Frontier Logo
4:59 pm - 7:46 am
STL
-
MSY
14h 47m
1 stop
$192Frontier
Thu, Apr 9 - Sun, Apr 12
Frontier Logo
9:12 pm - 7:02 am
MSY
-
STL
9h 50m
1 stop
Frontier Logo
4:54 pm - 7:46 am
STL
-
MSY
14h 52m
1 stop
$224Frontier
Thu, Mar 26 - Thu, Apr 2
Frontier Logo
9:30 pm - 7:07 am
MSY
-
STL
9h 37m
1 stop
Frontier Logo
7:52 am - 6:05 pm
STL
-
MSY
10h 13m
1 stop
$230Frontier
Fri, Mar 27 - Sun, Mar 29
Multiple Airlines Logo
6:32 pm - 6:50 am
MSY
-
STL
12h 18m
1 stop
Multiple Airlines Logo
8:17 pm - 10:00 am
STL
-
MSY
13h 43m
2 stops
$234Multiple Airlines
Fri, May 1 - Mon, May 4
Multiple Airlines Logo
6:32 pm - 6:50 am
MSY
-
STL
12h 18m
1 stop
Multiple Airlines Logo
4:59 pm - 6:58 pm
STL
-
MSY
25h 59m
1 stop
$237Multiple Airlines
Fri, May 1 - Mon, May 4
Frontier Logo
3:36 pm - 9:48 am
MSY
-
STL
18h 12m
1 stop
Frontier Logo
4:59 pm - 7:46 am
STL
-
MSY
14h 47m
1 stop
$241Frontier
Fri, Apr 3 - Sun, Apr 5
American Airlines Logo
7:12 am - 4:41 pm
MSY
-
STL
9h 29m
1 stop
American Airlines Logo
12:27 pm - 9:01 pm
STL
-
MSY
8h 34m
1 stop
$245American Airlines
Tue, Apr 7 - Fri, Apr 10
American Airlines Logo
7:15 am - 4:41 pm
MSY
-
STL
9h 26m
1 stop
American Airlines Logo
12:27 pm - 9:01 pm
STL
-
MSY
8h 34m
1 stop
$249American Airlines
Sat, Apr 11 - Mon, Apr 13
Frontier Logo
9:30 pm - 7:07 am
MSY
-
STL
9h 37m
1 stop
Frontier Logo
7:52 am - 6:05 pm
STL
-
MSY
10h 13m
1 stop
$250Frontier
Fri, Mar 27 - Sun, Mar 29

American Airlines flights from New Orleans to St. Louis

Our best American Airlines deals on New Orleans to St. Louis flight tickets
American Airlines
Apr 7
MSY7:12 amNew Orleans Louis Armstrong
9h 29m
1 stop
STL4:41 pmLambert-St Louis
Apr 10
STL12:27 pmLambert-St Louis
8h 34m
1 stop
MSY9:01 pmNew Orleans Louis Armstrong
$245
American Airlines
Apr 11
MSY7:15 amNew Orleans Louis Armstrong
9h 26m
1 stop
STL4:41 pmLambert-St Louis
Apr 13
STL12:27 pmLambert-St Louis
8h 34m
1 stop
MSY9:01 pmNew Orleans Louis Armstrong
$249
American Airlines
Apr 11
MSY7:15 amNew Orleans Louis Armstrong
9h 26m
1 stop
STL4:41 pmLambert-St Louis
Apr 12
STL6:55 pmLambert-St Louis
5h 00m
1 stop
MSY11:55 pmNew Orleans Louis Armstrong
$294

Southwest flights from New Orleans to St. Louis

Our best Southwest deals on New Orleans to St. Louis flight tickets
Southwest
Apr 7
MSY7:40 amNew Orleans Louis Armstrong
1h 50m
STL9:30 amLambert-St Louis
Apr 10
STL7:50 pmLambert-St Louis
3h 45m
1 stop
MSY11:35 pmNew Orleans Louis Armstrong
$288
Southwest
Apr 7
MSY6:45 amNew Orleans Louis Armstrong
6h 05m
2 stops
STL12:50 pmLambert-St Louis
Apr 10
STL7:50 pmLambert-St Louis
3h 45m
1 stop
MSY11:35 pmNew Orleans Louis Armstrong
$292
Southwest
May 2
MSY7:55 amNew Orleans Louis Armstrong
1h 50m
STL9:45 amLambert-St Louis
May 4
STL7:30 pmLambert-St Louis
3h 45m
1 stop
MSY11:15 pmNew Orleans Louis Armstrong
$310

momondo Fare Finder

 
Customize your flight search to find flights from New Orleans to St. Louis 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 March 1, 2026.
Use the filters below to find and compare flights from New Orleans to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Thu 4/23

3:36 pm-7:21 pm

1 stop27h 45m

Lambert-St Louis

Sun 4/26

4:59 pm-10:41 am

1 stop17h 42m

$171

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Thu 4/9

3:24 pm-9:48 am

1 stop18h 24m

Lambert-St Louis

Sun 4/12

4:59 pm-7:46 am

1 stop14h 47m

$192

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Thu 3/26

9:12 pm-7:02 am

1 stop9h 50m

Lambert-St Louis

Thu 4/2

4:54 pm-7:46 am

1 stop14h 52m

$224

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Fri 3/27

9:30 pm-7:07 am

1 stop9h 37m

Lambert-St Louis

Sun 3/29

7:52 am-6:05 pm

1 stop10h 13m

$230

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Fri 5/1

6:32 pm-6:50 am

1 stop12h 18m

Lambert-St Louis

Mon 5/4

8:17 pm-10:00 am

2 stops13h 43m

$234

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Fri 5/1

6:32 pm-6:50 am

1 stop12h 18m

Lambert-St Louis

Mon 5/4

4:59 pm-6:58 pm

1 stop25h 59m

$237

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Fri 4/3

3:36 pm-9:48 am

1 stop18h 12m

Lambert-St Louis

Sun 4/5

4:59 pm-7:46 am

1 stop14h 47m

$241

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Tue 4/7

7:12 am-4:41 pm

1 stop9h 29m

Lambert-St Louis

Fri 4/10

12:27 pm-9:01 pm

1 stop8h 34m

$245

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Sat 4/11

7:15 am-4:41 pm

1 stop9h 26m

Lambert-St Louis

Mon 4/13

12:27 pm-9:01 pm

1 stop8h 34m

$249

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Fri 3/27

9:30 pm-7:07 am

1 stop9h 37m

Lambert-St Louis

Sun 3/29

7:52 am-6:05 pm

1 stop10h 13m

$250

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 St. Louis from

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

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 St. Louis?

In general, March is the cheapest month to fly from New Orleans to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $358. The month of July is another great option to travel to St. Louis, with average flight prices from New Orleans averaging around $360.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $339. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $534. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from New Orleans at noon is the least expensive time of day to depart. momondo users have found prices as low as $377 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $395 per ticket.

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

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

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

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

You could potentially save up to 3% on your flight if you consider stops on a New Orleans to St. Louis flight.

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

As of March 2026, prices for New Orleans to St. Louis flights are approximately 3% more expensive when compared to flights at the same time last year.

When to book flights from New Orleans to St. Louis

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

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

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

Best Price Found

$253

Fastest flight time

1h 45m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from New Orleans in the past 72 hours is $253. The best round-trip flight deal from New Orleans to St. Louis found on momondo in the last 72 hours is $311.
The fastest flight from New Orleans to St. Louis takes 1h 45m
Direct flights go from New Orleans to St. Louis every day.
There is 1 airport in St. Louis. From New Orleans there are direct flights to Lambert-St Louis (STL).
Search flight deals

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

    The distance between New Orleans Louis Armstrong and Lambert-St Louis is about 599.0 mi. Flights usually cover this in 1h 45m, depending on flying conditions and air traffic around both airports.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from New Orleans Louis Armstrong Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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

Best airlines flying from New Orleans to St. Louis

Compare and see reviews for airlines that fly from New Orleans to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $72Free CancellationRating
5.7
3,040 reviews
Search Frontier flights
DeltaPriceFrom $143Free CancellationRating
7.9
8,244 reviews
Search Delta flights
SouthwestPriceFrom $270Free CancellationRating
8.0
4,303 reviews
Search Southwest flights
American AirlinesPriceFrom $311Free CancellationRating
7.1
11,370 reviews
Search American Airlines flights

  • Southwest Flights From New Orleans to St. Louis

    The lowest priced Southwest flight from New Orleans to St. Louis from the last 72 hours was $270. Generally, Southwest has 6 flights on this route every week with an average price of $392. Southwest is rated 8.0/10 by our users.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
St. Peters
Wentzville
Collinsville
Alton
Fenton
Farmington
Edwardsville
Festus
Clayton
Eureka
Litchfield
Glencoe
Grafton

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from New Orleans.

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

Yes. All flights to St. Louis from New Orleans on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential New Orleans to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from New Orleans to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

An easier way to manage your St. Louis trip

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