Route guide · 605 miles
Cheap Flights from New Orleans to St. Louis
MSY → STL · Nonstop 1h 44m · Live round-trip fares
The run from New Orleans (MSY) to St. Louis (STL) is 605 miles of sky, and ticket prices on it are anything but steady. One week can cost double the next. Booking about 2–4 weeks in advance — and watching fares with a free Airfare Deal alert — is how regulars on this route keep costs down.
Live fares for MSY → STL are updating. Use the search below for real-time prices.
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Updated daily
Flight time
1h 44m
Nonstop, typical
Distance
605 mi
MSY → STL
Book ahead
2–4 weeks
Best window, typically
Nonstop airlines
1
Southwest Airlines
Nonstop flights from New Orleans to St. Louis
Nonstop flights from New Orleans to St. Louis are flown by Southwest Airlines. The 605-mile trip takes about 1h 44m gate to gate, and nonstops are usually cheapest when booked 2–4 weeks ahead.
Booking insights: New Orleans → St. Louis
- Distance: 605 miles · nonstop flight time: 1h 44m.
- Fares tend to bottom out when you book about 2–4 weeks ahead — earlier than that rarely helps, later usually hurts.
- Tuesday and Wednesday departures usually undercut Friday and Sunday fares on routes like this one.
- A free fare alert beats daily checking: we watch this route and ping you when prices drop.
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Flying from New Orleans to St. Louis: what you need to know
The flight
The nonstop from MSY to STL runs about 1h 44m over 605 miles. It's a comfortable mid-range flight: long enough that seat choice matters a little, short enough that paying up for extras rarely does.
Airlines on this route
Southwest Airlines flies this route nonstop. That matters more than it sounds: the cheapest fare on one carrier is rarely the same product as the cheapest on another. Checked-bag fees, free seat selection and change rules all differ, so compare the full trip cost before you pick a winner. See our airline guides for exactly what each carrier charges — then send an enquiry and we'll confirm the all-in price for your dates.
Leaving from New Orleans (MSY)
Plan to be at the airport two hours before a domestic departure — ninety minutes can work at smaller airports outside peak times, but security lines are the one variable you can't control. If you're checking a bag, add time rather than cutting it close. Our New Orleans airport guide covers terminals, parking and ground transport so you can plan the trip to the airport, not just the flight.
Arriving in St. Louis (STL)
Before you land, know how you're getting from the airport to where you're staying — it's the part of the trip people forget to plan. The St. Louis airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars. Flying back the other way? Check St. Louis to New Orleans fares — prices on the return direction often move on a different rhythm.
When to book
For a trip of 605 miles, booking 2–4 weeks ahead typically lands you in the sweet spot. Leave it to the final two weeks and prices usually climb as the cheapest seats sell out. If your dates are flexible, midweek departures are where the lower fares hide on most domestic routes.
Good to know before you go
- Get to the airport two hours before departure; security, not the flight, is the part that runs late.
- If you're traveling with only a carry-on, you can skip the bag-drop line entirely with mobile check-in.
- Download the airline's app before you fly; gate changes and delays show up there first.
- Nonstop time on this route is about 1h 44m — a one-stop itinerary needs to be a lot cheaper to be worth the extra hours.
- Tuesday and Wednesday departures are typically the cheapest days on domestic routes.
New Orleans to St. Louis flight FAQs
How long is the flight from MSY to STL?
A nonstop from MSY to STL clocks in at around 1h 44m for the 605-mile trip. If you're connecting, budget an extra 2–4 hours depending on where you stop.
Are there nonstop flights from New Orleans to St. Louis?
Southwest Airlines typically operate nonstop flights from MSY to STL. Nonstops are usually cheapest when booked 2–4 weeks ahead of departure.
What is the cheapest month to fly from New Orleans to St. Louis?
There's no single magic month, but prices on this route generally soften in the shoulder season, when demand dips after the holidays and again in early fall. A free fare alert is the easiest way to catch those windows.
How much are last minute flights from MSY to STL?
Last-minute flights from MSY to STL (booked within 7 days of departure) typically cost noticeably more than fares booked 2–4 weeks out. Booking early is the smarter move.
What is a good round-trip deal from New Orleans to St. Louis?
A good deal is anything at or below the recent fares shown above. Set a free Airfare Deal alert and we'll ping you the moment fares drop.
Which airlines fly from New Orleans to St. Louis?
You'll mainly see Southwest Airlines on New Orleans to St. Louis. Checking each against the live fares below is the surest way to find the lowest price for your dates.
How early should I get to New Orleans airport for this flight?
Plan on two hours before departure for a domestic flight — ninety minutes can work at smaller airports outside peak times. If you're checking a bag, earlier is better; the bag-drop line, not the flight, is what runs late.
Do the cheapest fares on this route include a checked bag?
Usually not. Basic economy fares on most airlines include a carry-on but charge extra for checked bags, and seat selection can cost more too. Add up the real total before comparing — a slightly higher regular fare sometimes works out cheaper. Our team confirms the full breakdown with you before you pay.
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