$98 Cheap Flights from St. Louis (STL) to New Orleans (MSY)

View $98 flight on Thu, Nov 13, 2025Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

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

Prices were available within the past 7 days and start at $98 for one-way flights and $195 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Thu, Oct 30 - Thu, Nov 13
STL
St. Louis
MSY
New Orleans
$195 Roundtrip, just found
$195
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Oct 30 from St. Louis to New Orleans, returning Thu, Nov 13, priced at $195 just found
Spirit Airlines
Sun, Aug 17 - Thu, Aug 21
STL
St. Louis
MSY
New Orleans
$202 Roundtrip, found 5 days ago
$202
Roundtrip
found 5 days ago
Select Spirit Airlines flight, departing Sun, Aug 17 from St. Louis to New Orleans, returning Thu, Aug 21, priced at $202 found 5 days ago
Spirit Airlines
Thu, Nov 6 - Sun, Nov 9
STL
St. Louis
MSY
New Orleans
$205 Roundtrip, found 3 hours ago
$205
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Thu, Nov 6 from St. Louis to New Orleans, returning Sun, Nov 9, priced at $205 found 3 hours ago
Spirit Airlines
Thu, Oct 23 - Mon, Oct 27
STL
St. Louis
MSY
New Orleans
$206 Roundtrip, just found
$206
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Oct 23 from St. Louis to New Orleans, returning Mon, Oct 27, priced at $206 just found
Spirit Airlines
Thu, Oct 23 - Sat, Oct 25
STL
St. Louis
MSY
New Orleans
$211 Roundtrip, found 1 hour ago
$211
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Thu, Oct 23 from St. Louis to New Orleans, returning Sat, Oct 25, priced at $211 found 1 hour ago
Frontier Airlines
Thu, Oct 30 - Thu, Nov 13
STL
St. Louis
MSY
New Orleans
$213 Roundtrip, just found
$213
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Oct 30 from St. Louis to New Orleans, returning Thu, Nov 13, priced at $213 just found
Spirit Airlines
Thu, Nov 13 - Sun, Nov 16
STL
St. Louis
MSY
New Orleans
$215 Roundtrip, just found
$215
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Nov 13 from St. Louis to New Orleans, returning Sun, Nov 16, priced at $215 just found
Southwest Airlines
Sat, Nov 15 - Mon, Nov 17
STL
St. Louis
MSY
New Orleans
$217 Roundtrip, found 1 hour ago
$217
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Sat, Nov 15 from St. Louis to New Orleans, returning Mon, Nov 17, priced at $217 found 1 hour ago
Delta
Thu, Oct 23 - Mon, Oct 27
STL
St. Louis
MSY
New Orleans
$222 Roundtrip, just found
$222
Roundtrip
just found
Select Delta flight, departing Thu, Oct 23 from St. Louis to New Orleans, returning Mon, Oct 27, priced at $222 just found
United
Sat, Aug 30 - Wed, Sep 3
STL
St. Louis
MSY
New Orleans
$227 Roundtrip, just found
$227
Roundtrip
just found
Select United flight, departing Sat, Aug 30 from St. Louis to New Orleans, returning Wed, Sep 3, priced at $227 just found

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

September is typically the cheapest month to fly

From $133 - $399 per traveler.

Graph displaying average flight prices per month

Alternative airports near New Orleans

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Louis Armstrong New Orleans Intl. MSY. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $342
MSY
Louis Armstrong New Orleans Intl.
Cheapest
Average driving time to city center20 min
Flights from $342
Flights from St. Louis (STL) to New Orleans (MSY)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Louis Armstrong New Orleans Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$195
Distance
605 mi
Average flight time
2 hours 29 mins

St. Louis to New Orleans Flights

The cheapest times to fly from St. Louis to New Orleans

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to New Orleans are during the month of October. You can find some of the cheapest flights from St. Louis to New Orleans with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to New Orleans

Sunday is one of the best days to book for cheap flights from St. Louis to New Orleans: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to New Orleans

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to New Orleans in 2025. You can also book with separate airlines for your outbound and return journeys, from $98 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to New Orleans flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to New Orleans airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Louis Armstrong New Orleans Intl. Airport (MSY) cost?
You can land cheap return fares from Lambert-St. Louis Intl. Airport (STL) to Louis Armstrong New Orleans Intl. Airport (MSY) starting at $217. Book a seat and get ready for takeoff. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Southwest Airlines flight leaving STL on August 17 2025 and touching down at MSY. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from STL to MSY?
The cheapest flights from STL to MSY are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to Louis Armstrong New Orleans Intl. Airport (MSY)?
When departing from Lambert-St. Louis Intl. Airport (STL), you can get on a direct flight to Louis Armstrong New Orleans Intl. Airport (MSY) with Southwest Airlines.
What is the cheapest airline that flies from STL to MSY?
Take off from STL to MSY with Southwest Airlines. This airline currently has the lowest one-way fare on this route, starting from $109. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from STL on October 13 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Louis Armstrong New Orleans Intl. Airport (MSY)?
With, on average, 2 nonstop flights that operate from Lambert-St. Louis Intl. Airport (STL) to Louis Armstrong New Orleans Intl. Airport (MSY) each day, you'll be soaring through the skies in no time.
What are the most popular departure times for flights from Lambert-St. Louis Intl. Airport (STL) to Louis Armstrong New Orleans Intl. Airport (MSY)?
The 9 AM departures from STL to MSY are the top choice for many travelers. Prices can be higher for these popular slots. If you want to save money, pick a less crowded time to fly.
What day of the week has the most flights from STL to MSY?
Friday offers the most flights from Lambert-St. Louis Intl. Airport (STL) to Louis Armstrong New Orleans Intl. Airport (MSY). Consider leaving on this day and you'll have the best chance of finding a departure that works with your plans.
What is the earliest flight from Lambert-St. Louis Intl. Airport (STL) to Louis Armstrong New Orleans Intl. Airport (MSY)?
The earliest flight leaving from Lambert-St. Louis Intl. Airport (STL) is at around 8:25AM UTC-6. Board this plane and you'll arrive at Louis Armstrong New Orleans Intl. Airport (MSY) at approximately 10:15AM UTC-6. The overall travel time is 1h 50m.
How long does it take to fly from Lambert-St. Louis Intl. Airport (STL) to Louis Armstrong New Orleans Intl. Airport (MSY)?
Flights from STL to MSY have an average travel time of 1 hour and 50 minutes. The total distance between these two airports is 610 mi.
What airline has the least delays from STL to MSY?
Southwest Airlines has the strongest track record for on-time direct flights from Lambert-St. Louis Intl. Airport (STL) to Louis Armstrong New Orleans Intl. Airport (MSY), with an on-time score of 86%. Use the Expedia App to check your journey status before you jet off and get immediate updates about any trip changes.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Louis Armstrong New Orleans Intl. Airport (MSY)?
To touch down at Louis Armstrong New Orleans Intl. Airport (MSY) on time, pick a flight that leaves Lambert-St. Louis Intl. Airport (STL) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for New Orleans from Lambert-St. Louis Intl. Airport (STL)?
Louis Armstrong New Orleans Intl. Airport (MSY) is the only airport in New Orleans with direct flights from Lambert-St. Louis Intl. Airport (STL). Consider the options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Louis Armstrong New Orleans Intl. Airport (MSY) last-minute?
Booking your flight from STL to MSY right before your journey is usually more expensive. However, if you're flexible with your departure dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a STL to MSY flight and hotel package?
Opting for a STL to MSY flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Select from our extensive range of hotels and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Louis Armstrong New Orleans Intl. Airport (MSY)?
It's generally possible to cancel or reschedule your STL to MSY flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.