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£345 Cheap Flights from New Orleans (MSY) to St. Louis (STL)

View £345 flight on Tue, 21 Jul 2026Opens in a new window

Popular airlines from Louis Armstrong New Orleans Intl. Airport (MSY) to Lambert-St. Louis International Airport (STL)

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Cheap Flights from New Orleans (MSY) to St. Louis (STL)

Prices were available within the past 7 days and start at £345 for one-way flights and £606 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, 21 Jul - Mon, 27 Jul
MSY
New Orleans
STL
St. Louis
£606 Return, found 6 days ago
£606
Return
found 6 days ago
Select Alaska Airlines flight, departing Tue, 21 Jul from New Orleans to St. Louis, returning Mon, 27 Jul, priced at £606 found 6 days ago
Alaska Airlines
Mon, 3 Aug - Mon, 10 Aug
MSY
New Orleans
STL
St. Louis
£639 Return, found 4 days ago
£639
Return
found 4 days ago
Select Alaska Airlines flight, departing Mon, 3 Aug from New Orleans to St. Louis, returning Mon, 10 Aug, priced at £639 found 4 days ago
Alaska Airlines
Mon, 3 Aug - Mon, 10 Aug
MSY
New Orleans
STL
St. Louis
£678 Return, found 4 days ago
£678
Return
found 4 days ago
Select Alaska Airlines flight, departing Mon, 3 Aug from New Orleans to St. Louis, returning Mon, 10 Aug, priced at £678 found 4 days ago
Alaska Airlines
Mon, 3 Aug - Mon, 10 Aug
MSY
New Orleans
STL
St. Louis
£704 Return, found 4 days ago
£704
Return
found 4 days ago
Select Alaska Airlines flight, departing Mon, 3 Aug from New Orleans to St. Louis, returning Mon, 10 Aug, priced at £704 found 4 days ago
Alaska Airlines
Tue, 21 Jul - Mon, 27 Jul
MSY
New Orleans
STL
St. Louis
£727 Return, found 6 days ago
£727
Return
found 6 days ago
Select Alaska Airlines flight, departing Tue, 21 Jul from New Orleans to St. Louis, returning Mon, 27 Jul, priced at £727 found 6 days ago
Alaska Airlines
Mon, 3 Aug - Mon, 10 Aug
MSY
New Orleans
STL
St. Louis
£742 Return, found 4 days ago
£742
Return
found 4 days ago
Select Alaska Airlines flight, departing Mon, 3 Aug from New Orleans to St. Louis, returning Mon, 10 Aug, priced at £742 found 4 days ago
Alaska Airlines
Tue, 21 Jul - Mon, 27 Jul
MSY
New Orleans
STL
St. Louis
£749 Return, found 6 days ago
£749
Return
found 6 days ago
Select Alaska Airlines flight, departing Tue, 21 Jul from New Orleans to St. Louis, returning Mon, 27 Jul, priced at £749 found 6 days ago
Alaska Airlines
Tue, 21 Jul - Mon, 27 Jul
MSY
New Orleans
STL
St. Louis
£757 Return, found 6 days ago
£757
Return
found 6 days ago
Select Alaska Airlines flight, departing Tue, 21 Jul from New Orleans to St. Louis, returning Mon, 27 Jul, priced at £757 found 6 days ago
Alaska Airlines
Tue, 21 Jul - Mon, 27 Jul
MSY
New Orleans
STL
St. Louis
£758 Return, found 6 days ago
£758
Return
found 6 days ago
Select Alaska Airlines flight, departing Tue, 21 Jul from New Orleans to St. Louis, returning Mon, 27 Jul, priced at £758 found 6 days ago
Alaska Airlines
Mon, 3 Aug - Mon, 10 Aug
MSY
New Orleans
STL
St. Louis
£761 Return, found 4 days ago
£761
Return
found 4 days ago
Select Alaska Airlines flight, departing Mon, 3 Aug from New Orleans to St. Louis, returning Mon, 10 Aug, priced at £761 found 4 days ago

Frequently asked questions

What is the cheapest month to fly from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
February is typically the cheapest month to fly from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), with average round-trip fares around 807 CAD. This is about 20% lower than the average price throughout the year. February often sees lower prices as it falls outside of peak holiday travel seasons, leading to reduced demand. Other cheap months to fly from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) include September and October.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Enter MSY to STL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best airline to fly with from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will differ from traveler to traveler. If you like to fly early, WN offers early morning flights. If price is the most important factor, WN typically offers the lowest fares. WN offers the most daily flights from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best time to fly from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) (MSY) to St. Louis, MO (STL-Lambert-St. Louis Intl.) (STL) for a good value is typically February or September. Based on booking data from the past year, you can expect average round-trip flight prices around 807 CAD during these months. While these might not be the absolute busiest travel times, they offer a great balance of lower fares and still provide plenty of flight options for your trip.*Prices based on flights available on Expedia in the last year.
How many flights per day from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
When flying from Louis Armstrong New Orleans Intl. (MSY) to Lambert-St. Louis Intl. (STL), you'll find approximately 2 nonstop flights per day. For even more choice, look at flights that include layovers, as there are around 87 connecting flights daily. Some common connection points include Hartsfield-Jackson Atlanta Intl. (ATL), George Bush Intercontinental (IAH), and O'Hare Intl. (ORD).
What is the earliest flight from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The earliest flight from Louis Armstrong New Orleans Intl. (MSY) to Lambert-St. Louis Intl. (STL) typically departs at approximately 5:00 AM local time, operated by American Airlines. This is a seasonal service active in May. An early departure like this can help maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you're flying from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), you'll generally find the most flight options on a Friday, with around 60 flights available. This gives you plenty of options to choose from for your travel plans. Flight schedules are quite consistent throughout the week, with only a slight variation in the number of flights on other days. Major airlines on this route include Southwest Airlines, United Airlines, and American Airlines.
What are the most popular departure times for flights from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The most popular departure times for flights from Louis Armstrong New Orleans Intl. (MSY) to Lambert-St. Louis Intl. (STL) are in the morning, between 9am and 12pm. About 22% of passengers prefer this time. Many major carriers, including Southwest Airlines, American Airlines and Delta Air Lines, offer flights during this window. This timing works well for many travelers as it allows for a productive morning before heading to the airport, and you'll arrive in St. Louis with plenty of the day left.
How long does it take to fly from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Flying nonstop from MSY to STL takes around 1 hour 50 minutes, with the route covering approximately 605 miles. Flights with a layover typically take 5 hours longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Select the "Business class" and "First class" filters when looking for MSY to STL flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for St. Louis from Louis Armstrong New Orleans Intl. (MSY)?
From Louis Armstrong New Orleans Intl. (MSY), you can fly into Lambert-St. Louis Intl. (STL) to reach St. Louis. Some flights may connect through major hubs like George Bush Intercontinental (IAH), Love Field (DAL), William P. Hobby (HOU) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Louis Armstrong New Orleans Intl.
Destination airport
Lambert-St. Louis Intl.
Return price
£606
Distance
968 km
Average flight time
3 hours 24 mins

Book with confidence

Compare flights from New Orleans to St. Louis easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from New Orleans to St. Louis. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Lambert-St. Louis Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Louis Armstrong New Orleans Intl. to Lambert-St. Louis Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Louis Armstrong New Orleans Intl. (MSY) to Lambert-St. Louis Intl. (STL)

The easiest way to view the best deals on flights from New Orleans to St. Louis today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Louis Armstrong New Orleans Intl. to Lambert-St. Louis Intl. start at just £606 and range up to £761.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near New Orleans and St. Louis
  • booking your flight during July, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your New Orleans to St. Louis flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Louis Armstrong New Orleans Intl. to Lambert-St. Louis Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from New Orleans to St. Louis easily and book with confidence

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*Available to Expedia members.