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$99+ Cheap flights from New Orleans to St. Louis (MSY - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
MSY — STL
Mar 26 — Apr 21
Wed 3/26
Wed 4/2
1 adult, Economy
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1. Tell us where you want to go
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Cheapflights Tip: The best prices from New Orleans Louis Armstrong to Lambert-St Louis are usually found in July or August, booked 36 days in advance, depart on a Thursday or Tuesday and return on a Monday

Cheap flight deals from New Orleans to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from New Orleans (MSY) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$217
(Delta)

One-way from

$99
(Southwest)

Popular in

October

Cheapest in

July

Average price

$389

Good round-trip deal

$307 or less

Good one-way deal

$175 or less
Provider with most accurate pricing for New Orleans Louis Armstrong-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for New Orleans Louis Armstrong-Lambert-St Louis flights.
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From New Orleans Louis Armstrong to Lambert-St Louis
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One-way flight from New Orleans Louis Armstrong to Lambert-St Louis
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Highest demand for flights based on searches. 8% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from New Orleans Louis Armstrong to Lambert-St Louis.
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Price to beat on a one-way flight from New Orleans Louis Armstrong to Lambert-St Louis.
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Find flight deals from New Orleans to St. Louis

Cheapest flights from New Orleans to St. Louis
Explore the most affordable flight options available from New Orleans to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2025.

This Delta deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/15:30 amMSY - STL
1 stop4h 06mDelta
Sat 5/37:10 amSTL - MSY
1 stop4h 39mDelta
Deal found 3/20$217
This United Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/107:00 amMSY - STL
2 stops8h 47mUnited Airlines
Wed 5/146:15 amSTL - MSY
1 stop4h 34mUnited Airlines
Deal found 3/20$222
This Mytrip deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/18:20 pmMSY - STL
1 stop15h 11mSun Country Air
Sun 5/48:00 amSTL - MSY
1 stop8h 47mSun Country Air
Deal found 3/20$231
This Mytrip deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/110:23 amMSY - STL
2 stops33h 47mMultiple Airlines
Sun 5/48:00 amSTL - MSY
1 stop8h 47mMultiple Airlines
Deal found 3/20$244
This CheapOair deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/132:08 pmMSY - STL
1 stop9h 38mFrontier
Sat 4/196:51 pmSTL - MSY
1 stop24h 00mFrontier
Deal found 3/21$251
This Mytrip deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/193:09 pmMSY - STL
2 stops26h 06mSpirit Airlines
Tue 4/226:10 pmSTL - MSY
1 stop21h 03mSpirit Airlines
Deal found 3/20$267
This Southwest deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/247:40 amMSY - STL
Nonstop1h 50mSouthwest
Sat 4/265:25 amSTL - MSY
1 stop4h 05mSouthwest
Deal found 3/20$278
This American Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/169:51 amMSY - STL
1 stop6h 18mAmerican Airlines
Wed 11/199:39 amSTL - MSY
1 stop4h 05mAmerican Airlines
Deal found 3/20$401
This Alaska Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/46:59 pmMSY - STL
2 stops19h 16mAlaska Airlines
Tue 4/83:11 pmSTL - MSY
1 stop14h 23mAlaska Airlines
Deal found 3/20$810

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated March 21, 2025.
Use the filters below to find and compare flights from New Orleans to St. Louis that are best for you.

Fly from

New Orleans

Fly to

St. Louis

Route

Depart

Return

Price

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Thu 5/1

7:40 am-9:30 am

Nonstop1h 50m

Lambert-St Louis

Sat 5/3

5:25 am-9:30 am

1 stop4h 05m

$217

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Sat 5/10

7:00 am-3:47 pm

2 stops8h 47m

Lambert-St Louis

Wed 5/14

6:15 am-10:49 am

1 stop4h 34m

$222

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Thu 5/1

8:20 pm-11:31 am

1 stop15h 11m

Lambert-St Louis

Sun 5/4

8:00 am-4:47 pm

1 stop8h 47m

$231

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Fri 4/18

12:59 pm-5:56 pm

1 stop4h 57m

Lambert-St Louis

Fri 4/25

5:32 pm-9:49 pm

1 stop4h 17m

$237

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Thu 5/1

10:23 am-8:10 pm

2 stops33h 47m

Lambert-St Louis

Sun 5/4

8:00 am-4:47 pm

1 stop8h 47m

$244

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Sun 4/13

2:08 pm-11:46 pm

1 stop9h 38m

Lambert-St Louis

Sat 4/19

6:51 pm-6:51 pm

1 stop24h 00m

$251

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Sat 4/19

3:09 pm-5:15 pm

2 stops26h 06m

Lambert-St Louis

Tue 4/22

6:10 pm-3:13 pm

1 stop21h 03m

$267

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Fri 4/4

6:59 pm-2:15 pm

2 stops19h 16m

Lambert-St Louis

Tue 4/8

3:11 pm-5:34 am

1 stop14h 23m

$810

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Thu 6/5

1:59 pm-6:01 pm

1 stop4h 02m

$99

New OrleansSt. Louis

MSY - STL

MSYSTL

New Orleans Louis Armstrong

Mon 4/28

9:31 pm-5:15 pm

1 stop19h 44m

$103

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 16 results
1
2

Compare providers for flights from New Orleans to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from New Orleans to St. Louis in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on New Orleans-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New Orleans-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from New Orleans-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on New Orleans-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for New Orleans-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for New Orleans to St. Louis flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your New Orleans to St. Louis trip
Airports
MSY

Expect average security wait times of around 15 minutes at MSY, thanks to efficient processes and lower passenger volumes.

Read more about MSYby Brandon Schultz
STL

Use the MetroLink light rail for a convenient and economical trip from STL to downtown St. Louis, taking about 40 minutes.

Read more about STLby Taryn White
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on MSY

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Taryn White

Taryn White

Expert on STL

Taryn White

Taryn White

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Read more

Best time to book a flight from New Orleans to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from New Orleans with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from New Orleans to St. Louis

How far ahead should I book a flight from New Orleans to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from New Orleans to St. Louis. Price data was last updated on March 14, 2025.

The price you pay for your flight from New Orleans to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 36 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from New Orleans to St. Louis?

Currently, August is the cheapest month in which you can book a flight from New Orleans to St. Louis (average of $311). Flying from New Orleans to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MSY to STL?

Find hourly flight availability from New Orleans to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 21, 2025.

It’s optimal to fly from New Orleans to St. Louis in the afternoon. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight at noon.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated March 21, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from New Orleans to St. Louis have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,278 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,278 reviews
Southwest
8.1
Very good
4,278 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,759 reviews
Southwest
8.1
Very good
4,278 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,895 reviews
Southwest
8.1
Very good
4,278 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,605 reviews
Southwest
8.1
Very good
4,278 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,278 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from New Orleans to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from New Orleans to St. Louis?

    Booking a flight from New Orleans Louis Armstrong (MSY) to Lambert-St Louis (STL) is your only option if you wish to fly from New Orleans to St. Louis. On a typical day, there is 1 flight from Louis Armstrong to Lambert-St Louis, all of which are around 1h 50m for a nonstop flight. You can also purchase a plane ticket from 6 airlines when you book a flight from Louis Armstrong to St. Louis.

  • How popular is this New Orleans to St. Louis flight route?

    The New Orleans Louis Armstrong to Lambert-St Louis flight path was viewed by 6 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from New Orleans to St. Louis round-trip?

    According to our current data, Delta ($217), United Airlines ($222), and Sun Country Air ($231) offers the cheapest pricing from New Orleans to St. Louis. Delta is currently priced 34% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from New Orleans to St. Louis one-way?

    The cheapest airlines for a one-way flight from New Orleans to St. Louis are Southwest ($99), Spirit Airlines ($103), and United Airlines ($104).

  • What are the cheapest flights from New Orleans to St. Louis?

    The cheapest flight price from New Orleans to St. Louis is $138. On average you can expect to pay $317. The most popular route, (New Orleans Louis Armstrong - Lambert-St Louis), can usually be booked for $217.

  • Can I find deals for flights from New Orleans to St. Louis that include hotel bookings?

    Yes. In addition to deals on New Orleans to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from New Orleans to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from New Orleans to St. Louis.

  • Can I find deals for business class flights from New Orleans to St. Louis?

    Yes. Cheapflights offers flight deals from New Orleans to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from New Orleans to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from New Orleans to St. Louis (average of $311). Flying from New Orleans to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near New Orleans?

Book flights to New Orleans if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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Top 6 airlines flying from New Orleans to St. Louis

Discover the top 6 airlines that operate flights from New Orleans to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$106Average$178FlexibilityNo cancel feeOn-time65%
FrontierCheapest$134Average$168FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$188Average$324FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$283FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$228Average$293FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$307Average$431FlexibilityNo cancel feeOn-time63%
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