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$90 Cheap Flights from New Orleans (MSY) to St. Louis (STL)

View $90 flight on Fri, Nov 20, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $90 for one-way flights and $226 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, Nov 20 - Sun, Nov 22
MSY
New Orleans
STL
St. Louis
$226 Roundtrip, found 14 hours ago
$226
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Fri, Nov 20 from New Orleans to St. Louis, returning Sun, Nov 22, priced at $226 found 14 hours ago
Frontier Airlines
Mon, Sep 28 - Thu, Oct 1
MSY
New Orleans
STL
St. Louis
$246 Roundtrip, found 4 days ago
$246
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Mon, Sep 28 from New Orleans to St. Louis, returning Thu, Oct 1, priced at $246 found 4 days ago
Frontier Airlines
Wed, Sep 23 - Thu, Oct 1
MSY
New Orleans
STL
St. Louis
$250 Roundtrip, found 4 days ago
$250
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, Sep 23 from New Orleans to St. Louis, returning Thu, Oct 1, priced at $250 found 4 days ago
Frontier Airlines
Wed, Sep 23 - Fri, Oct 2
MSY
New Orleans
STL
St. Louis
$252 Roundtrip, found 4 days ago
$252
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, Sep 23 from New Orleans to St. Louis, returning Fri, Oct 2, priced at $252 found 4 days ago
Frontier Airlines
Thu, Oct 15 - Mon, Oct 19
MSY
New Orleans
STL
St. Louis
$258 Roundtrip, found 1 day ago
$258
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Oct 15 from New Orleans to St. Louis, returning Mon, Oct 19, priced at $258 found 1 day ago
Frontier Airlines
Mon, Sep 28 - Thu, Oct 1
MSY
New Orleans
STL
St. Louis
$259 Roundtrip, found 4 days ago
$259
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Mon, Sep 28 from New Orleans to St. Louis, returning Thu, Oct 1, priced at $259 found 4 days ago
Southwest Airlines
Wed, Nov 4 - Mon, Nov 9
MSY
New Orleans
STL
St. Louis
$296 Roundtrip, found 1 day ago
$296
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Wed, Nov 4 from New Orleans to St. Louis, returning Mon, Nov 9, priced at $296 found 1 day ago
United
Fri, Oct 30 - Mon, Nov 2
MSY
New Orleans
STL
St. Louis
$362 Roundtrip, just found
$362
Roundtrip
just found
Select United flight, departing Fri, Oct 30 from New Orleans to St. Louis, returning Mon, Nov 2, priced at $362 just found
American Airlines
Wed, Jan 6 - Tue, Jan 12
MSY
New Orleans
STL
St. Louis
$365 Roundtrip, found 1 day ago
$365
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jan 6 from New Orleans to St. Louis, returning Tue, Jan 12, priced at $365 found 1 day ago
Delta
Wed, Oct 7 - Wed, Oct 14
MSY
New Orleans
STL
St. Louis
$367 Roundtrip, just found
$367
Roundtrip
just found
Select Delta flight, departing Wed, Oct 7 from New Orleans to St. Louis, returning Wed, Oct 14, priced at $367 just found

Alternative airports near St. Louis

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

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $350
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $350

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

February is typically the cheapest month to fly

From $145 - $458 per traveler.

What you need to know for your flight from Louis Armstrong New Orleans Intl. to Lambert-St. Louis Intl.

New Orleans (MSY) to St. Louis (STL) at a glance

Travel from New Orleans (MSY) to St. Louis (STL) with a selection of airlines operating on this domestic short-haul route. You can evaluate options from both full-service and budget carriers to discover the best itinerary that aligns with your budget and schedule while visiting the iconic attractions and neighborhoods of St. Louis. Get all the essential information for flights from Louis Armstrong New Orleans International Airport (MSY) to Lambert-St. Louis International Airport (STL).

  • Fastest flight duration: around 1h 45m non-stop
  • Route distance: roughly 600 miles (970 km)
  • Flights per week: around 14 flights with multiple daily departures on average
  • Typical fares (one-way): economy tickets often range from $100–$465, depending on seasonality and how far ahead you book

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

Based on the latest traveler bookings, here are the top airlines flying from New Orleans to St. Louis, favored for both non-stop and one-stop flights. Popular layover spots include Hartsfield-Jackson Atlanta International Airport (ATL) with an approximate 1 hour and 15 minutes layover, George Bush Intercontinental Airport (IAH) also around 1 hour and 15 minutes, and Dallas-Fort Worth International Airport (DFW) with a similar layover time. These options allow you to tailor your journey by balancing cost, overall travel time, and cabin class for the best itinerary.

  • Southwest Airlines: This affordable airline provides both non-stop and one-stop flights, with one-way ticket prices usually between $110 and $545. It represents about 50% of the departures on this route, with direct flights taking around 1 hour and 45 minutes.
  • American Airlines: Offering a full-service experience, this airline features one-stop options with one-way fares typically in the range of $105 to $390. It accounts for nearly 22% of the departures, with a flight duration of 3 hours and 30 minutes and a total travel time of about 4 hours and 45 minutes, including layover.
  • Delta: Similar to American Airlines, Delta is a full-service airline providing one-stop service. Its one-way fares generally vary from $100 to $405, making up around 14% of departures on this route. Expect an in-flight duration of 3 hours and 30 minutes, leading to a total journey time of roughly 4 hours and 45 minutes, including layover.
  • United: As another full-service option, United Airlines offers one-stop flights with one-way fares typically ranging from $100 to $405. This airline constitutes about 12% of the route's departures, with an in-flight time of 3 hours and 30 minutes and an overall travel time of approximately 4 hours and 45 minutes, including layover.
  • Frontier Airlines: This low-cost airline provides one-stop flight services, with one-way fares usually priced between $100 and $215. Frontier accounts for roughly 3% of the departures on this route, with an in-flight duration of 3 hours and 30 minutes and a total travel time of around 4 hours and 45 minutes, including layover.

Best time to fly from New Orleans (MSY) to St. Louis (STL)

The most popular months for travelers flying from New Orleans to St. Louis are February, March, and April, when peak temperatures in St. Louis reach up to 56.1°F in April. If you prefer quieter travel, consider December, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 37.8°F. For better deals, November usually offers the lowest average one-way fare around $225. Flight availability peaks in February, August, and November, with approximately 16 flights per week, making it easier to find convenient departure times. January has the fewest flights, with approximately 11 flights per week.

  • Cheapest time to fly: November usually offers good deals with average one-way fare around $225, roughly 11% cheaper than the yearly average.
  • More budget-friendly months to fly: December, January, and April typically offer average one-way fares of around $232.
  • Most flight options: February, August, and November have the highest number of flights from New Orleans to St. Louis, with approximately 16 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January31.6°F (-0.2°C)Average11$233
February34.9°F (1.6°C)Moderately High16$237
March46.4°F (8.0°C)Moderately High13$281
April56.1°F (13.4°C)Moderately High15$236
May66.6°F (19.2°C)Moderately Low13$280
June76.1°F (24.5°C)Moderately Low13$247
July78.6°F (25.9°C)Average14$279
August77.0°F (25.0°C)Average16$280
September70.9°F (21.6°C)Average13$242
October58.6°F (14.8°C)Average15$285
November46.2°F (7.9°C)Average16$225
December37.8°F (3.2°C)Moderately Low15$228

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from New Orleans (MSY) to St. Louis (STL)

  • New Orleans to St. Louis (MSY-SUS): Spirit of St. Louis Airport (SUS) lies approximately 16 miles from Lambert-St. Louis International Airport (STL), providing a convenient option for travelers.
  • New Orleans to St. Louis (MSY-CPS): St. Louis Downtown Airport (CPS) is located about 16 miles from Lambert-St. Louis International Airport (STL), making it another viable travel alternative.

How to find the best prices for flights from New Orleans (MSY) to St. Louis (STL)

Getting some of the best deals on flights from New Orleans to St. Louis is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking 2-8 weeks in advance, although most travelers tend to book within 2 weeks. Departures in the afternoon (12 PM-6 PM) generally offer lower prices, while morning flights (5 AM-12 PM) are the most popular. Additionally, flying on Wednesday typically results in cheaper fares, but Sunday remains the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Lambert-St. Louis International Airport from Louis Armstrong New Orleans International Airport

St. Louis welcomes travelers from New Orleans with a range of transport options based on price, convenience, and proximity. For departures, Louis Armstrong New Orleans International Airport is roughly a 20-minute drive (covering about 14 miles) from central New Orleans. Here's how to reach St. Louis efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in St. Louis, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Lambert-St. Louis International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Lambert-St. Louis International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Lambert-St. Louis International Airport, Lambert Main Terminal Station, a metro station, is located about 0.1 miles away on foot, providing convenient access for travelers.

Frequently asked questions

How much does a flight from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
You can find cheap one-way flights from $90 and cheap return flights from $226 New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) with Expedia. One-way flights typically cost between $184 and $651, and return flights often range between $347 and $991. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
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 the cheapest month to fly from New Orleans (MSY) to St. Louis (STL), with average round-trip fares around $332. This is about 20% lower than the average price throughout the year, as February often sees reduced travel demand. Other cheap months to fly from New Orleans to St. Louis 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.
What is the cheapest airline that flies from New Orleans, LA (MSY-Louis Armstrong New Orleans Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Southwest Airlines is one of the cheapest airlines offering nonstop flights from Louis Armstrong New Orleans Intl. (MSY) to Lambert-St. Louis Intl. (STL), with round-trip tickets starting from around $217. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
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) to St. Louis, MO (STL) 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 MSY to STL, 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.)?
For flights from New Orleans to St. Louis, February and September are the best months to consider. Average return flight prices are around $332, providing a great balance of cost and convenience. February is especially attractive as it often features milder weather, making your trip more enjoyable.*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.)?
On average, there are around 2 nonstop flights per day from Louis Armstrong New Orleans Intl. (MSY) to Lambert-St. Louis Intl. (STL). For more options, look at flights that include layovers.
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 New Orleans (MSY) to St. Louis (STL) usually departs at around 5:00 AM, operated by American Airlines. This seasonal service is active in May, allowing you to make the most of your day in St. Louis. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
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 New Orleans (MSY) to St. Louis (STL) are in the late morning, from 9am to 12pm. About 25% of passengers prefer this time window. Many major carriers, including Southwest Airlines and American Airlines, offer flights during this window. This timing works well because it allows you to enjoy a leisurely morning in New Orleans before heading to the airport.
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.)?
First class seats are offered on the MSY to STL route. First class cabins are available on:

  • Delta Air Lines
  • American Airlines
  • United Airlines
  • Spirit Airlines

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)?
If you're planning to travel to St. Louis from Louis Armstrong New Orleans Intl. (MSY), you can fly into Lambert-St. Louis Intl. (STL) 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.) St Louis Vacation Packages 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.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$225
Distance
605 mi
Average flight time
2 hours 19 mins

Book with confidence

New Orleans to St. Louis Flights

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

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 New Orleans to St. Louis are during the month of November. You can find some of the cheapest flights from New Orleans to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from New Orleans to St. Louis: 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 New Orleans to St. Louis

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 New Orleans to St. Louis in 2026. You can also book with separate airlines for your outbound and return journeys, from $90 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 New Orleans to St. Louis 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 New Orleans to St. Louis 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.

 

New Orleans to St. Louis Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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