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Cheap flights from New Orleans to St. Louis from $70

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 2/21. 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.
Multiple Airlines Logo
7:00 am - 10:34 pm
MSY
-
STL
15h 34m1 stop
Multiple Airlines Logo
5:11 pm - 9:29 pm
STL
-
MSY
28h 18m2 stops
$168Multiple Airlines
Thu, Jan 15 - Mon, Jan 19
Multiple Airlines Logo
7:00 am - 10:34 pm
MSY
-
STL
15h 34m1 stop
Multiple Airlines Logo
5:11 pm - 7:41 pm
STL
-
MSY
26h 30m1 stop
$175Multiple Airlines
Thu, Jan 15 - Mon, Jan 19
Multiple Airlines Logo
7:35 pm - 12:27 am
MSY
-
STL
28h 52m1 stop
Multiple Airlines Logo
3:49 pm - 4:05 pm
STL
-
MSY
24h 16m1 stop
$199Multiple Airlines
Thu, Feb 12 - Mon, Feb 16
Frontier Logo
1:59 pm - 10:33 pm
MSY
-
STL
8h 34m1 stop
Frontier Logo
5:11 pm - 11:58 am
STL
-
MSY
18h 47m1 stop
$200Frontier
Mon, Jan 5 - Thu, Jan 8
Frontier Logo
5:55 pm - 10:02 am
MSY
-
STL
16h 07m1 stop
Frontier Logo
3:43 pm - 4:49 pm
STL
-
MSY
25h 06m1 stop
$220Frontier
Sun, Jan 11 - Wed, Jan 14
Multiple Airlines Logo
6:15 am - 11:59 pm
MSY
-
STL
17h 44m2 stops
Multiple Airlines Logo
3:49 pm - 4:05 pm
STL
-
MSY
24h 16m1 stop
$236Multiple Airlines
Thu, Feb 12 - Mon, Feb 16
Multiple Airlines Logo
7:00 am - 11:33 pm
MSY
-
STL
16h 33m1 stop
Multiple Airlines Logo
5:42 pm - 7:41 pm
STL
-
MSY
25h 59m1 stop
$250Multiple Airlines
Sat, Jan 24 - Tue, Jan 27
Multiple Airlines Logo
7:00 am - 11:33 pm
MSY
-
STL
16h 33m1 stop
Multiple Airlines Logo
5:42 pm - 7:41 pm
STL
-
MSY
25h 59m1 stop
$253Multiple Airlines
Sat, Jan 24 - Tue, Jan 27
Multiple Airlines Logo
7:00 am - 11:33 pm
MSY
-
STL
16h 33m1 stop
Multiple Airlines Logo
5:42 pm - 9:29 pm
STL
-
MSY
27h 47m2 stops
$269Multiple Airlines
Sat, Jan 24 - Tue, Jan 27
Multiple Airlines Logo
7:00 am - 11:33 pm
MSY
-
STL
16h 33m1 stop
Multiple Airlines Logo
5:42 pm - 9:29 pm
STL
-
MSY
27h 47m2 stops
$271Multiple Airlines
Sat, Jan 24 - Tue, Jan 27

Frontier flights from New Orleans to St. Louis

Our best Frontier deals on New Orleans to St. Louis flight tickets
Frontier
Jan 5
MSY1:59 pmNew Orleans Louis Armstrong
8h 34m
1 stop
STL10:33 pmLambert-St Louis
Jan 8
STL5:11 pmLambert-St Louis
18h 47m
1 stop
MSY11:58 amNew Orleans Louis Armstrong
$200
Find similar
Frontier
Jan 16
MSY12:52 pmNew Orleans Louis Armstrong
9h 42m
1 stop
STL10:34 pmLambert-St Louis
Jan 18
STL5:11 pmLambert-St Louis
18h 46m
1 stop
MSY11:57 amNew Orleans Louis Armstrong
$204
Find similar
Frontier
Jan 16
MSY5:44 pmNew Orleans Louis Armstrong
21h 04m
1 stop
STL2:48 pmLambert-St Louis
Jan 18
STL5:11 pmLambert-St Louis
18h 46m
1 stop
MSY11:57 amNew Orleans Louis Armstrong
$209
Find similar

United Airlines flights from New Orleans to St. Louis

Our best United Airlines deals on New Orleans to St. Louis flight tickets
United Airlines
Mar 1
MSY5:05 amNew Orleans Louis Armstrong
4h 18m
1 stop
STL9:23 amLambert-St Louis
Mar 7
STL7:41 amLambert-St Louis
5h 42m
1 stop
MSY1:23 pmNew Orleans Louis Armstrong
$317
Find similar
United Airlines
Jan 8
MSY9:05 amNew Orleans Louis Armstrong
8h 38m
2 stops
STL5:43 pmLambert-St Louis
Jan 13
STL6:00 amLambert-St Louis
4h 52m
1 stop
MSY10:52 amNew Orleans Louis Armstrong
$382
Find similar
United Airlines
Jan 22
MSY9:05 amNew Orleans Louis Armstrong
6h 47m
1 stop
STL3:52 pmLambert-St Louis
Jan 26
STL6:00 amLambert-St Louis
7h 09m
1 stop
MSY1:09 pmNew Orleans Louis Armstrong
$395
Find similar

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 December 27, 2025.
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 1/15

7:00 am-10:34 pm

1 stop15h 34m

Lambert-St Louis

Mon 1/19

5:11 pm-9:29 pm

2 stops28h 18m

$168

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Thu 1/15

7:00 am-10:34 pm

1 stop15h 34m

Lambert-St Louis

Mon 1/19

5:11 pm-7:41 pm

1 stop26h 30m

$175

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Thu 2/12

7:35 pm-12:27 am

1 stop28h 52m

Lambert-St Louis

Mon 2/16

3:49 pm-4:05 pm

1 stop24h 16m

$199

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Mon 1/5

1:59 pm-10:33 pm

1 stop8h 34m

Lambert-St Louis

Thu 1/8

5:11 pm-11:58 am

1 stop18h 47m

$200

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Sun 1/11

5:55 pm-10:02 am

1 stop16h 07m

Lambert-St Louis

Wed 1/14

3:43 pm-4:49 pm

1 stop25h 06m

$220

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Thu 2/12

6:15 am-11:59 pm

2 stops17h 44m

Lambert-St Louis

Mon 2/16

3:49 pm-4:05 pm

1 stop24h 16m

$236

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Sat 1/24

7:00 am-11:33 pm

1 stop16h 33m

Lambert-St Louis

Tue 1/27

5:42 pm-7:41 pm

1 stop25h 59m

$250

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Sat 1/24

7:00 am-11:33 pm

1 stop16h 33m

Lambert-St Louis

Tue 1/27

5:42 pm-7:41 pm

1 stop25h 59m

$253

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Sat 1/24

7:00 am-11:33 pm

1 stop16h 33m

Lambert-St Louis

Tue 1/27

5:42 pm-9:29 pm

2 stops27h 47m

$269

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Sat 1/24

7:00 am-11:33 pm

1 stop16h 33m

Lambert-St Louis

Tue 1/27

5:42 pm-9:29 pm

2 stops27h 47m

$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 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, May 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 $342. The month of August is another great option to travel to St. Louis, with average flight prices from New Orleans averaging around $353.

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 $346. 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 $531. 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 in the morning is the least expensive time of day to depart. momondo users have found prices as low as $376 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $394 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?

No. A direct flight is the cheapest option for a flight between New Orleans to St. Louis.

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

As of December 2025, prices for New Orleans to St. Louis flights are approximately 184% 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

$144

Fastest flight time

1h 45m

Direct flights

Mon, Tue, Wed, Fri, Sat and Sun

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from New Orleans in the past 72 hours is $144. The best round-trip flight deal from New Orleans to St. Louis found on momondo in the last 72 hours is $340.
The fastest flight from New Orleans to St. Louis takes 1h 45m
Direct flights go from New Orleans to St. Louis on Monday, Tuesday, Wednesday, Friday, Saturday and Sunday. The only airline offering direct flights is Southwest.
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
5.8
3,071 reviews
Search Frontier flights
United AirlinesPriceFrom $218Free CancellationRating
7.4
9,114 reviews
Search United Airlines flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,066 reviews
Search American Airlines flights
SouthwestPriceFrom $278Free CancellationRating
8.0
4,257 reviews
Search Southwest 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 $278. Generally, Southwest has 10 flights on this route every week with an average price of $391. 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
Maryland Heights
O'Fallon
Florissant
Fenton
St. Peters
Wentzville
Collinsville
Alton
Farmington
Clayton
Festus
Glencoe
Eureka
Edwardsville
Litchfield
Shrewsbury

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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