$241 Cheap Flights from Harlingen (HRL) to Missoula (MSO)

View $241 flight on Tue, Jan 13, 2026Opens in a new window

Popular airlines from Valley Intl. Airport (HRL) to Missoula Intl. Airport (MSO)

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Cheap Flights from Harlingen to Missoula (HRL-MSO)

Prices were available within the past 7 days and start at $241 for one-way flights and $409 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Jan 8 - Wed, Jan 21
HRL
Harlingen
MSO
Missoula
$409 Roundtrip, found 13 hours ago
$409
Roundtrip
found 13 hours ago
Select United flight, departing Thu, Jan 8 from Harlingen to Missoula, returning Wed, Jan 21, priced at $409 found 13 hours ago
American Airlines
Fri, Jan 9 - Wed, Jan 14
HRL
Harlingen
MSO
Missoula
$424 Roundtrip, found 1 day ago
$424
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Jan 9 from Harlingen to Missoula, returning Wed, Jan 14, priced at $424 found 1 day ago
United
Thu, Jan 8 - Tue, Jan 20
HRL
Harlingen
MSO
Missoula
$434 Roundtrip, found 13 hours ago
$434
Roundtrip
found 13 hours ago
Select United flight, departing Thu, Jan 8 from Harlingen to Missoula, returning Tue, Jan 20, priced at $434 found 13 hours ago
American Airlines
Fri, Jan 9 - Sat, Jan 10
HRL
Harlingen
MSO
Missoula
$449 Roundtrip, found 1 day ago
$449
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Jan 9 from Harlingen to Missoula, returning Sat, Jan 10, priced at $449 found 1 day ago
American Airlines
Thu, Jan 8 - Wed, Jan 14
HRL
Harlingen
MSO
Missoula
$454 Roundtrip, found 1 day ago
$454
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Jan 8 from Harlingen to Missoula, returning Wed, Jan 14, priced at $454 found 1 day ago
United
Sat, Jan 10 - Tue, Jan 20
HRL
Harlingen
MSO
Missoula
$459 Roundtrip, found 13 hours ago
$459
Roundtrip
found 13 hours ago
Select United flight, departing Sat, Jan 10 from Harlingen to Missoula, returning Tue, Jan 20, priced at $459 found 13 hours ago
United
Wed, Jan 7 - Sun, Jan 11
HRL
Harlingen
MSO
Missoula
$462 Roundtrip, found 1 day ago
$462
Roundtrip
found 1 day ago
Select United flight, departing Wed, Jan 7 from Harlingen to Missoula, returning Sun, Jan 11, priced at $462 found 1 day ago
American Airlines
Thu, Jan 8 - Sat, Jan 10
HRL
Harlingen
MSO
Missoula
$479 Roundtrip, found 1 day ago
$479
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Jan 8 from Harlingen to Missoula, returning Sat, Jan 10, priced at $479 found 1 day ago
United
Thu, Jan 8 - Sat, Jan 24
HRL
Harlingen
MSO
Missoula
$479 Roundtrip, found 13 hours ago
$479
Roundtrip
found 13 hours ago
Select United flight, departing Thu, Jan 8 from Harlingen to Missoula, returning Sat, Jan 24, priced at $479 found 13 hours ago
United
Wed, Jan 7 - Sun, Jan 11
HRL
Harlingen
MSO
Missoula
$483 Roundtrip, found 1 day ago
$483
Roundtrip
found 1 day ago
Select United flight, departing Wed, Jan 7 from Harlingen to Missoula, returning Sun, Jan 11, priced at $483 found 1 day ago
Flights from Harlingen (HRL) to Missoula (MSO)
Origin airport
Valley Intl.
Destination airport
Missoula Intl.
Airlines serving
American Airlines, United
Roundtrip price
$409
Distance
1687 mi

Harlingen to Missoula Flights

The cheapest times to fly from Harlingen to Missoula

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 Harlingen to Missoula are during the month of January. You can find some of the cheapest flights from Harlingen to Missoula with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Harlingen to Missoula

Sunday is one of the best days to book for cheap flights from Harlingen to Missoula: 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 Harlingen to Missoula

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 Harlingen to Missoula in 2026. You can also book with separate airlines for your outbound and return journeys, from $241 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 Harlingen to Missoula 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 Harlingen to Missoula 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 Valley Intl. Airport (HRL) to Missoula Intl. Airport (MSO) cost?
Lock in a cheap one-way flight from $241 or cheap return flight from $409 from Valley Intl. Airport (HRL) to Missoula Intl. Airport (MSO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Valley Intl. Airport (HRL) to Missoula Intl. Airport (MSO)?
January is the most affordable month to fly from HRL to MSO. Traveling during an off-peak travel window is often the key to finding a great deal.
What is the cheapest airline that flies from Valley Intl. Airport (HRL) to Missoula Intl. Airport (MSO)?
To find the cheapest airline flying from HRL to MSO, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Valley Intl. Airport (HRL) to Missoula Intl. Airport (MSO)?
There are no daily nonstop flights available from Valley Intl. Airport (HRL) to Missoula Intl. Airport (MSO). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from HRL to MSO?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Valley Intl. Airport (HRL) to Missoula Intl. Airport (MSO)?
Select a flight from Valley Intl. Airport (HRL) to Missoula Intl. Airport (MSO) that takes off before 3 PM to reduce the risk of cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**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 Valley Intl. Airport (HRL) to Missoula Intl. Airport (MSO) last-minute?
Last-minute fares from HRL to MSO are typically more expensive. For the cheapest rates, start searching for flights as soon as possible. That being said, if your travel plans are flexible, you may score a cheap ticket right before your journey.
Is it cheaper to book a HRL to MSO flight and hotel package?
Booking a HRL to MSO flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our wide range of hotels and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Valley Intl. Airport (HRL) to Missoula Intl. Airport (MSO)?
In most instances, you can cancel or reschedule your HRL to MSO flight. However, additional charges may apply, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you need further information, go to our Customer Service portal.

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*Available to One Key members.