Cheap Flights from New Orleans Louis Armstrong to St Louis

Compare New Orleans Louis Armstrong to St Louis flight deals

Find the cheapest month or even day of the year to fly to St Louis

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Flight deals from New Orleans Louis Armstrong Airport to St Louis Airport

Looking for a cheap last-minute deal or the best return flight from New Orleans Louis Armstrong Airport to St Louis Airport? If you want to travel next month, return fares start from $501. Find the lowest prices on one-way and return tickets right here.

St Louis.$390 per passenger.Departing Fri, 27 Mar, returning Sat, 4 Apr.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from New Orleans Louis Armstrong on Fri, 27 Mar, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Sat, 4 Apr, arriving in New Orleans Louis Armstrong.Price includes taxes and charges.From $390, select.

St Louis.$458 per passenger.Departing Fri, 20 Mar, returning Sun, 22 Mar.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from New Orleans Louis Armstrong on Fri, 20 Mar, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Sun, 22 Mar, arriving in New Orleans Louis Armstrong.Price includes taxes and charges.From $458, select.

St Louis.$501 per passenger.Departing Sat, 4 Apr, returning Wed, 8 Apr.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from New Orleans Louis Armstrong on Sat, 4 Apr, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Wed, 8 Apr, arriving in New Orleans Louis Armstrong.Price includes taxes and charges.From $501, select.

St Louis.$521 per passenger.Departing Fri, 15 May, returning Tue, 19 May.Return flight with Delta.Outbound indirect flight with Delta, departs from New Orleans Louis Armstrong on Fri, 15 May, arriving in St Louis.Inbound indirect flight with Delta, departs from St Louis on Tue, 19 May, arriving in New Orleans Louis Armstrong.Price includes taxes and charges.From $521, select.

St Louis.$527 per passenger.Departing Thu, 26 Mar, returning Mon, 30 Mar.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from New Orleans Louis Armstrong on Thu, 26 Mar, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Mon, 30 Mar, arriving in New Orleans Louis Armstrong.Price includes taxes and charges.From $527, select.

St Louis.$540 per passenger.Departing Mon, 10 Aug, returning Fri, 21 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from New Orleans Louis Armstrong on Mon, 10 Aug, arriving in St Louis.Inbound indirect flight with Delta, departs from St Louis on Fri, 21 Aug, arriving in New Orleans Louis Armstrong.Price includes taxes and charges.From $540, select.

St Louis.$540 per passenger.Departing Mon, 8 Jun, returning Fri, 19 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from New Orleans Louis Armstrong on Mon, 8 Jun, arriving in St Louis.Inbound indirect flight with Delta, departs from St Louis on Fri, 19 Jun, arriving in New Orleans Louis Armstrong.Price includes taxes and charges.From $540, select.

St Louis.$540 per passenger.Departing Mon, 13 Jul, returning Fri, 24 Jul.Return flight with Delta.Outbound indirect flight with Delta, departs from New Orleans Louis Armstrong on Mon, 13 Jul, arriving in St Louis.Inbound indirect flight with Delta, departs from St Louis on Fri, 24 Jul, arriving in New Orleans Louis Armstrong.Price includes taxes and charges.From $540, select.

St Louis.$577 per passenger.Departing Sat, 3 Oct, returning Tue, 6 Oct.Return flight with United.Outbound indirect flight with United, departs from New Orleans Louis Armstrong on Sat, 3 Oct, arriving in St Louis.Inbound indirect flight with United, departs from St Louis on Tue, 6 Oct, arriving in New Orleans Louis Armstrong.Price includes taxes and charges.From $577, select.

St Louis.$615 per passenger.Departing Mon, 11 May, returning Fri, 22 May.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from New Orleans Louis Armstrong on Mon, 11 May, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Fri, 22 May, arriving in New Orleans Louis Armstrong.Price includes taxes and charges.From $615, select.

Find the cheapest month to fly from New Orleans Louis Armstrong to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like New Orleans Louis Armstrong to St Louis flights are currently cheapest in March.

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Direct flights from New Orleans Louis Armstrong to St Louis

New Orleans Louis Armstrong to St Louis: Alternative routes

Compare routes from New Orleans Louis Armstrong to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

New Orleans to St Louis: Flight information

The things to know before you go.

Cheapest flight found	$388
Cheapest month to fly	March
Average flight time	1 hr, 49 mins
Most popular airline	Southwest Airlines
Average flights per week	15

Finding cheap flights from New Orleans Louis Armstrong to St Louis: Frequently asked questions

How much are return flights from New Orleans Louis Armstrong to St Louis?

The best price we found for a return flight from New Orleans Louis Armstrong to St Louis is $390. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from New Orleans Louis Armstrong to St Louis?

1 hour and 49 minutes is the average flight time from New Orleans Louis Armstrong to St Louis.

Which airlines fly direct from New Orleans Louis Armstrong to St Louis?

Southwest Airlines flies direct from New Orleans Louis Armstrong to St Louis.

How many flights are there a week from New Orleans Louis Armstrong to St Louis?

As of March 2026, there are 15 flights per week flying from New Orleans Louis Armstrong to St Louis.

When is the cheapest time to fly from New Orleans Louis Armstrong to St Louis?

The cheapest month to fly from New Orleans Louis Armstrong to St Louis is usually March.

Which upcoming date is cheapest to fly from New Orleans Louis Armstrong Airport to St Louis Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from New Orleans Louis Armstrong Airport to St Louis Airport on Friday, 27 March 2026.

Can I get a direct flight from New Orleans Louis Armstrong Airport to St Louis Airport?

Yes – the average flight time is 1 hour and 49 minutes.

How can I find the best flight deal to St Louis?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to St Louis?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from New Orleans Louis Armstrong Airport to St Louis with?

Currently, Frontier Airlines and Southwest Airlines offer the cheapest flight tickets to St Louis.

Flying from Louis Armstrong New Orleans International Airport (MSY) to Lambert-St. Louis International Airport (STL): what you need to know

Hop on a direct flight from Louis Armstrong New Orleans International Airport to Lambert-St. Louis International Airport and you'll be travelling for an average of 1 hour 45 minutes.
New Orleans and St Louis are both in the UTC-5 timezone. That means you won't need to account for any time differences.
Every week, there are ten Louis Armstrong New Orleans International Airport to Lambert-St. Louis International Airport flights. To get going as soon as possible, go for the 05:10 Southwest Airlines flight. If you'd rather make the most of your day before flying, the last flight is at 20:15 with Southwest Airlines.
Get to the airport on time so you don't miss your MSY to STL flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the stress of rushing.
During popular months such as October, you'll want to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead for an international flight when you fly during a high season in general.
Southwest Airlines offers direct flights from Louis Armstrong New Orleans International Airport to Lambert-St. Louis International Airport. Book with this popular airline, then get ready to discover the sights in St Louis — and maybe even more of United States if time allows.
The airline with the highest number of bookings on this route is Southwest Airlines.
Southwest Airlines is the most punctual carrier offering MSY to STL flights. An exceptional 83.05% of its services on this route arrive without delay.
Think about adding a stopover when booking your ticket from Louis Armstrong New Orleans International Airport to Lambert-St. Louis International Airport. Just uncheck 'Direct flights only' to break up your trip, or perhaps see a new city along the way. Here are some options between MSY and STL:
- Hartsfield-Jackson Atlanta International Airport
- George Bush Intercontinental Airport
- Chicago Midway International Airport

How to find the cheapest flights from Louis Armstrong New Orleans International Airport (MSY) to Lambert-St. Louis International Airport (STL)

Currently, $149 is the lowest price we've seen for a one-way Louis Armstrong New Orleans International Airport to Lambert-St. Louis International Airport flight. The best price for a return plane ticket is $390. Keep in mind that fares can change due to availability at the time of booking.
To secure cheap tickets from MSY to STL, book your journey six months before your departure date.
Plan your trip for May. That's the cheapest month for flights from Louis Armstrong New Orleans International Airport to Lambert-St. Louis International Airport. If your travel dates are flexible, try out the 'Whole month' tool to find the lowest price across every month.
Save time searching for cheap flights from MSY to STL by creating a Price Alert. You'll receive an email or notification on the app when fares go down.
Select your preferred arrival and departure times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from Louis Armstrong New Orleans International Airport to Lambert-St. Louis International Airport.

Handy information about Louis Armstrong New Orleans International Airport (MSY)

MSY is located at 900 Airline Highway.
81.19% of flights leaving Louis Armstrong New Orleans International Airport land at their destination as planned. With its impressive on-time stats, disruptions are unlikely when jetting out of MSY.
To reach Louis Armstrong New Orleans International Airport from central New Orleans, it takes around 20 minutes if you're travelling by car. This depends on traffic, however. It's approximately 24 kilometres from the airport to the city centre.
Catching public transport? You can expect a journey time of around 50 minutes.
Looking for a convenient hotel close to MSY? If you're catching an early flight from Louis Armstrong New Orleans International Airport to Lambert-St. Louis International Airport, these stays will have you moments from your check-in counter:

Arriving at Lambert-St. Louis International Airport (STL)

The last thing you want is a long journey to your hotel if you're arriving on a late Louis Armstrong New Orleans International Airport to Lambert-St. Louis International Airport flight. Stay at one of these accommodation options near STL instead:
Pick up a Lambert-St. Louis International Airport rental car and explore St Louis and beyond with your own wheels. Hertz, Budget and Alamo are top providers to choose from here.
For the lowest price, reserve your vehicle from Lambert-St. Louis International Airport around one week before you set off.

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

The street address for STL is 10701 Lambert International Blvd..
Lambert-St. Louis International Airport is roughly 26 kilometres from the centre of St Louis. Driving there takes about 20 minutes.
Getting there on public transport will take you around 35 minutes.

When to fly to Lambert-St. Louis International Airport (STL)

It's time to pick your trip dates for your flight from Louis Armstrong New Orleans International Airport to Lambert-St. Louis International Airport. July is the most popular month to visit St Louis. If you want a quieter vibe, go in April.
Lock in your flight from Louis Armstrong New Orleans International Airport to Lambert-St. Louis International Airport for July if you'd like to explore St Louis during its warmest month. You can expect temperatures of between 17ºC and 33ºC.
Look for cheap tickets from MSY to STL in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between -8ºC and 7ºC on average.

Explore more of United States

St Louis has its own special appeal, but there are so many other corners of United States just waiting to be explored. About 418 kilometres north-east of St Louis, a visit to Chicago will keep you busy. Start with leading attractions like Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.
Indianapolis is another sought-after destination in United States and is around 370 kilometres east of St Louis. No trip is complete without experiencing The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.