$128 Cheap Flights from Missoula (MSO) to Pasco (PSC)

View $128 flight on Tue, Mar 31, 2026Opens in a new window

Popular airlines from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC)

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Cheap Flights from Missoula to Pasco (MSO-PSC)

Prices were available within the past 7 days and start at $128 for one-way flights and $237 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Apr 28 - Tue, May 12
MSO
Missoula
PSC
Pasco
$237 Roundtrip, found 6 days ago
$237
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Apr 28 from Missoula to Pasco, returning Tue, May 12, priced at $237 found 6 days ago
Alaska Airlines
Tue, Apr 28 - Sat, May 16
MSO
Missoula
PSC
Pasco
$259 Roundtrip, found 6 days ago
$259
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Apr 28 from Missoula to Pasco, returning Sat, May 16, priced at $259 found 6 days ago
Alaska Airlines
Tue, Apr 28 - Sun, May 17
MSO
Missoula
PSC
Pasco
$269 Roundtrip, found 6 days ago
$269
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Apr 28 from Missoula to Pasco, returning Sun, May 17, priced at $269 found 6 days ago
Alaska Airlines
Wed, Apr 29 - Sat, May 16
MSO
Missoula
PSC
Pasco
$281 Roundtrip, found 6 days ago
$281
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Apr 29 from Missoula to Pasco, returning Sat, May 16, priced at $281 found 6 days ago
Alaska Airlines
Tue, Apr 21 - Tue, May 5
MSO
Missoula
PSC
Pasco
$283 Roundtrip, found 6 days ago
$283
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Apr 21 from Missoula to Pasco, returning Tue, May 5, priced at $283 found 6 days ago
Alaska Airlines
Wed, Apr 29 - Sun, May 17
MSO
Missoula
PSC
Pasco
$291 Roundtrip, found 6 days ago
$291
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Apr 29 from Missoula to Pasco, returning Sun, May 17, priced at $291 found 6 days ago
Alaska Airlines
Wed, Apr 22 - Tue, May 5
MSO
Missoula
PSC
Pasco
$293 Roundtrip, found 6 days ago
$293
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Apr 22 from Missoula to Pasco, returning Tue, May 5, priced at $293 found 6 days ago
Delta
Fri, Mar 20 - Sat, Apr 4
MSO
Missoula
PSC
Pasco
$318 Roundtrip, found 6 days ago
$318
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Mar 20 from Missoula to Pasco, returning Sat, Apr 4, priced at $318 found 6 days ago
Hawaiian Airlines
Thu, Apr 2 - Sat, Apr 18
MSO
Missoula
PSC
Pasco
$322 Roundtrip, found 6 days ago
$322
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Thu, Apr 2 from Missoula to Pasco, returning Sat, Apr 18, priced at $322 found 6 days ago
United
Thu, Mar 5 - Fri, Mar 20
MSO
Missoula
PSC
Pasco
$587 Roundtrip, found 6 days ago
$587
Roundtrip
found 6 days ago
Select United flight, departing Thu, Mar 5 from Missoula to Pasco, returning Fri, Mar 20, priced at $587 found 6 days ago

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Alternative airports near Pasco

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Tri-Cities PSC. Cheapest and Closest option available. Average driving time to city center is 4 minutes. Flights from $338
PSC
Tri-Cities
CheapestClosest
Average driving time to city center4 min
Flights from $338

Frequently asked questions

How much does a flight from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC) cost?
Secure a cheap one-way flight from $128 or cheap return flight from $237 from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC)?
April is the least expensive month to fly from MSO to PSC. Avoiding peak travel times is often the key to landing a great deal.
What is the cheapest airline that flies from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll fly you from MSO to PSC. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC)?
Direct flights from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from MSO to PSC?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the airline, season 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 Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC)?
To avoid potential delays on the Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC) route, travel before 3 PM. Later flights are 22% more likely to be canceled.**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 Tri-Cities Airport (PSC) last-minute?
Waiting until right before your break to book a flight from MSO to PSC generally means paying more. While it's possible to find some last-minute offers, they aren't always guaranteed. Allow some flexibility in your schedule for the best chance of snagging a bargain.
Is it cheaper to book a MSO to PSC flight and hotel package?
Compared with arranging hotels and flights separately, booking a MSO to PSC flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one easy place takes the hassle out of travel planning. Simply secure your flights and select from our extensive range of stays, then tailor your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC)?
If you reserved your MSO to PSC flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

Travel information

Origin airport
Missoula Intl.
Destination airport
Tri-Cities
Airlines serving
Alaska Airlines, Delta, United
Roundtrip price
$236
Distance
243 mi

Book with confidence

Missoula to Pasco Flights

The cheapest times to fly from Missoula to Pasco

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

 

The best time to book a flight from Missoula to Pasco

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

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 Pasco in 2026. You can also book with separate airlines for your outbound and return journeys, from $128 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 Pasco 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 Pasco 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.

 

Missoula to Pasco Flights

*Flight schedules are subject to change.

*Available to One Key members.