CA $279 Cheap Flights from New Orleans (MSY) to St. Louis (STL)

View CA $279 flight on Mon, Sep. 8, 2025Opens 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 CA $279 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from New Orleans (MSY) to St. Louis (STL)

September is typically the cheapest month to fly

From CA $199 - CA $958 per traveller.

Graph displaying average flight prices per month

Flight from New Orleans to St. Louis (MSY - STL) route information
Origin airport
Louis Armstrong New Orleans Intl.
Destination airport
Lambert-St. Louis Intl.
Distance
968 km
Average flight time
1 hour 50 mins

New Orleans to St. Louis Flights

The easy way to book your flights from New Orleans to St. Louis 

With Expedia, it’s simple to find and book flights to St. Louis from New Orleans whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 2 airlines that cover this route. There are Southwest Airlines nonstop flights to Lambert-St. Louis Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from New Orleans to St. Louis today, tomorrow, or this week.  

 

Save dollars with cheap flights from Louis Armstrong New Orleans Intl., MSY to Lambert-St. Louis Intl., STL 

Sort your search results by price to find great deals on your flight from New Orleans to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from New Orleans currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to St. Louis  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to St. Louis from New Orleans 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.

Frequently asked questions

How much is a flight from Louis Armstrong New Orleans Intl. Airport to Lambert-St. Louis Intl. Airport (STL)?
Start packing your bags, because round-trip flights from MSY to STL start from . That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can change quickly, so book now to score the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from MSY to Lambert-St. Louis Intl. Airport (STL)?
Every airline has a different set of terms and conditions. If you decide to cancel your vacation, head to our Customer Service Portal.
How do I find cheap flights from Louis Armstrong New Orleans Intl. Airport (MSY) to Lambert-St. Louis Intl. Airport (STL) that have flexible change policies?
Select our "No change fees" filter to find flexible travel options for your flight from Louis Armstrong New Orleans Intl. Airport to STL. This allows you to snag a low rate in advance and still have the freedom to reschedule without any additional fees. Fare adjustments may apply if your new flight is more expensive.
How many hours is the flight from MSY to Lambert-St. Louis Intl. Airport (STL)?
With the average flight time between MSY and Lambert-St. Louis Intl. Airport (STL) a comfortable 5 hours and 8 minutes, you'll be exploring St. Louis before you know it.
How far is the flight from Louis Armstrong New Orleans Intl. Airport (MSY) to STL?
You won't have time for a movie marathon on this flight — it's just 970 kilometres from Kenner to St. Louis. Find your seat, order some snacks and you'll be touching down before long.
Which airlines fly direct from MSY to Lambert-St. Louis Intl. Airport (STL)?
Flying straight from MSY to STL is easy with Southwest Airlines (WN). This popular carrier operates 73 flights every month.
Are Louis Armstrong New Orleans Intl. Airport (MSY) to STL flight tickets cheaper when they're purchased at the last minute?
Flight tickets from Louis Armstrong New Orleans Intl. Airport (MSY) to STL are available up to a year prior to departure on Expedia. And although you may score fantastic last-minute deals, it's not something you should bank on. Also, booking your flights ahead of time means you'll have more options — and you can avoid getting caught in the dreaded middle seat! We frequently update our fares to bring you the biggest bargains, so check back often for all the latest specials.

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