$161 Cheap Flights from Missoula (MSO) to New Orleans (MSY)

View $161 flight on Tue, Oct 21, 2025Opens in a new window

Popular airlines from Missoula Intl. Airport (MSO) to Louis Armstrong New Orleans Intl. Airport (MSY)

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Find available prices by choosing your travel dates.

Cheap Flights from Missoula to New Orleans (MSO-MSY)

Prices were available within the past 7 days and start at $161 for one-way flights and $306 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Jun 3 - Tue, Jun 10
MSO
Missoula
MSY
New Orleans
$306 Roundtrip, found 8 hours ago
$306
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Tue, Jun 3 from Missoula to New Orleans, returning Tue, Jun 10, priced at $306 found 8 hours ago
American Airlines
Thu, Jun 5 - Mon, Jun 9
MSO
Missoula
MSY
New Orleans
$315 Roundtrip, just found
$315
Roundtrip
just found
Select American Airlines flight, departing Thu, Jun 5 from Missoula to New Orleans, returning Mon, Jun 9, priced at $315 just found
Bargain Flight
Tue, Oct 21 - Sat, Oct 25
MSO
Missoula
MSY
New Orleans
$318 Roundtrip, found 3 days ago
$318
Roundtrip
found 3 days ago
Select Bargain Flight flight, departing Tue, Oct 21 from Missoula to New Orleans, returning Sat, Oct 25, priced at $318 found 3 days ago
Alaska Airlines
Tue, Oct 21 - Sat, Oct 25
MSO
Missoula
MSY
New Orleans
$322 Roundtrip, found 3 days ago
$322
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Oct 21 from Missoula to New Orleans, returning Sat, Oct 25, priced at $322 found 3 days ago
United
Wed, May 28 - Tue, Jun 3
MSO
Missoula
MSY
New Orleans
$323 Roundtrip, found 1 hour ago
$323
Roundtrip
found 1 hour ago
Select United flight, departing Wed, May 28 from Missoula to New Orleans, returning Tue, Jun 3, priced at $323 found 1 hour ago
Delta
Thu, Jun 5 - Mon, Jun 9
MSO
Missoula
MSY
New Orleans
$323 Roundtrip, just found
$323
Roundtrip
just found
Select Delta flight, departing Thu, Jun 5 from Missoula to New Orleans, returning Mon, Jun 9, priced at $323 just found
Alaska Airlines
Tue, Oct 21 - Sat, Oct 25
MSO
Missoula
MSY
New Orleans
$328 Roundtrip, found 3 days ago
$328
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Oct 21 from Missoula to New Orleans, returning Sat, Oct 25, priced at $328 found 3 days ago
United
Tue, Jun 3 - Tue, Jun 10
MSO
Missoula
MSY
New Orleans
$328 Roundtrip, found 8 hours ago
$328
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Jun 3 from Missoula to New Orleans, returning Tue, Jun 10, priced at $328 found 8 hours ago
United
Thu, Jun 5 - Mon, Jun 9
MSO
Missoula
MSY
New Orleans
$333 Roundtrip, just found
$333
Roundtrip
just found
Select United flight, departing Thu, Jun 5 from Missoula to New Orleans, returning Mon, Jun 9, priced at $333 just found
Delta
Thu, Jun 12 - Tue, Jul 1
MSO
Missoula
MSY
New Orleans
$338 Roundtrip, found 5 days ago
$338
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Jun 12 from Missoula to New Orleans, returning Tue, Jul 1, priced at $338 found 5 days ago
Flights from Missoula (MSO) to New Orleans (MSY)
Origin airport
Missoula Intl.
Destination airport
Louis Armstrong New Orleans Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$306
Distance
1728 mi

Missoula to New Orleans Flights

The cheapest times to fly from Missoula 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 Missoula to New Orleans are during the month of June. You can find some of the cheapest flights from Missoula to New Orleans with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Missoula to New Orleans

Sunday is one of the best days to book for cheap flights from Missoula 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 Missoula 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 Missoula to New Orleans in 2025. You can also book with separate airlines for your outbound and return journeys, from $161 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 Missoula 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 Missoula 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 Missoula Intl. Airport (MSO) to Louis Armstrong New Orleans Intl. Airport (MSY) cost?
Discover the latest flight deals from MSO to MSY by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from MSO to MSY?
The cheapest flights from MSO 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.
What is the cheapest airline that flies from MSO to MSY?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from MSO to MSY. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Missoula Intl. Airport (MSO) to Louis Armstrong New Orleans Intl. Airport (MSY)?
You’ll need to book a flight with a layover when traveling from Missoula Intl. Airport (MSO) to Louis Armstrong New Orleans Intl. Airport (MSY). Direct flights don’t operate daily on this route. However, simply filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from MSO to MSY?
You’ll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Missoula Intl. Airport (MSO) to Louis Armstrong New Orleans Intl. Airport (MSY)?
To arrive at Louis Armstrong New Orleans Intl. Airport (MSY) on schedule, book a flight that leaves Missoula Intl. Airport (MSO) before 3 PM. The likelihood 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.
Is it cheaper to buy a plane ticket from Missoula Intl. Airport (MSO) to Louis Armstrong New Orleans Intl. Airport (MSY) last-minute?
Waiting until right before your break to book your flight from MSO to MSY generally means paying more. While you may come across some last-minute offers, they aren’t always guaranteed. Be flexible with your itinerary to boost your chances of landing a bargain.
Is it cheaper to book a MSO to MSY flight and hotel package?
You’ll typically save money by booking a MSO to MSY flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one place. Once you’ve selected your preferred flights and accommodations, consider adding extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Missoula Intl. Airport (MSO) to Louis Armstrong New Orleans Intl. Airport (MSY)?
If you reserved your MSO to MSY flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more information.

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*Available to One Key members.