$88 Cheap Flights from Portland (PDX) to Missoula (MSO)

View $88 flight on Tue, Nov 18, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Missoula Intl. Airport (MSO)

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Cheap Flights from Portland to Missoula (PDX-MSO)

Prices were available within the past 7 days and start at $88 for one-way flights and $157 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Wed, Aug 20 - Sat, Aug 23
PDX
Portland
MSO
Missoula
$157 Roundtrip, found 5 hours ago
$157
Roundtrip
found 5 hours ago
Select Hawaiian Airlines flight, departing Wed, Aug 20 from Portland to Missoula, returning Sat, Aug 23, priced at $157 found 5 hours ago
Hawaiian Airlines
Thu, Sep 18 - Tue, Sep 30
PDX
Portland
MSO
Missoula
$158 Roundtrip, found 5 days ago
$158
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Thu, Sep 18 from Portland to Missoula, returning Tue, Sep 30, priced at $158 found 5 days ago
Alaska Airlines
Sat, Sep 27 - Mon, Sep 29
PDX
Portland
MSO
Missoula
$177 Roundtrip, found 2 hours ago
$177
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Sat, Sep 27 from Portland to Missoula, returning Mon, Sep 29, priced at $177 found 2 hours ago
Delta
Fri, Aug 15 - Sat, Aug 16
PDX
Portland
MSO
Missoula
$185 Roundtrip, found 5 days ago
$185
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Aug 15 from Portland to Missoula, returning Sat, Aug 16, priced at $185 found 5 days ago
Alaska Airlines
Sat, Sep 13 - Sat, Sep 20
PDX
Portland
MSO
Missoula
$188 Roundtrip, found 1 day ago
$188
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Sep 13 from Portland to Missoula, returning Sat, Sep 20, priced at $188 found 1 day ago
Delta
Wed, Oct 29 - Mon, Nov 10
PDX
Portland
MSO
Missoula
$188 Roundtrip, found 5 days ago
$188
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Oct 29 from Portland to Missoula, returning Mon, Nov 10, priced at $188 found 5 days ago
Delta
Tue, Aug 19 - Wed, Aug 20
PDX
Portland
MSO
Missoula
$195 Roundtrip, found 9 hours ago
$195
Roundtrip
found 9 hours ago
Select Delta flight, departing Tue, Aug 19 from Portland to Missoula, returning Wed, Aug 20, priced at $195 found 9 hours ago
Alaska Airlines
Tue, Oct 28 - Thu, Oct 30
PDX
Portland
MSO
Missoula
$196 Roundtrip, found 1 hour ago
$196
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Tue, Oct 28 from Portland to Missoula, returning Thu, Oct 30, priced at $196 found 1 hour ago
United
Mon, Sep 15 - Wed, Sep 17
PDX
Portland
MSO
Missoula
$199 Roundtrip, found 2 hours ago
$199
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Sep 15 from Portland to Missoula, returning Wed, Sep 17, priced at $199 found 2 hours ago
Frontier Airlines
Thu, Jul 31 - Fri, Aug 8
PDX
Portland
MSO
Missoula
$208 Roundtrip, just found
$208
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Jul 31 from Portland to Missoula, returning Fri, Aug 8, priced at $208 just found

Find the cheapest month to fly from Portland (PDX) to Missoula (MSO)

June is typically the cheapest month to fly

From $147 - $292 per traveler.

Graph displaying average flight prices per month

Alternative airports near Missoula

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

Select flight to Missoula Intl. MSO. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $279
MSO
Missoula Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $279
Flights from Portland (PDX) to Missoula (MSO)
Origin airport
Portland Intl.
Destination airport
Missoula Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, United
Roundtrip price
$136
Distance
416 mi
Average flight time
2 hours 25 mins

Portland to Missoula Flights

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

 

The best time to book a flight from Portland to Missoula

Sunday is one of the best days to book for cheap flights from Portland 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 Portland 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 Portland to Missoula in 2025. You can also book with separate airlines for your outbound and return journeys, from $88 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 Portland 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 Portland 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 Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO) cost?
You'll find cheap return tickets from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO) starting at $138. Reserve your seat and be on your way. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Alaska Airlines flight leaving PDX on August 16 2025 and touching down at MSO. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from PDX to MSO?
The cheapest flights from PDX to MSO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO)?
You can travel nonstop from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO) on an Alaska Airlines flight.
What is the cheapest airline that flies from PDX to MSO?
Currently, the cheapest carrier operating one-way flights from PDX to MSO is Alaska Airlines. You can take off on this route from $89. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from PDX on September 17 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO)?
On average, there are 4 nonstop flights flying from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO) each week. If you can't find one that fits your schedule, consider taking a flight that includes a layover. Filter your search on Expedia to include one or more stops and select the next best alternative.
What are the most popular departure times for flights from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO)?
The 1 PM departures from PDX to MSO see the highest demand. They can also be more expensive. If you're looking to save, pick a less crowded time to fly.
What day of the week has the most flights from PDX to MSO?
Friday offers the most flights from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO). Consider jetting off on this day and you'll have a greater chance of finding a departure that fits your plans.
What is the earliest flight from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO)?
Portland Intl. Airport (PDX)'s earliest flight to Missoula Intl. Airport (MSO) takes off at approximately 1:17PM UTC-8. With a total flight time of 1h 15m, you'll arrive at around 3:32PM UTC-7.
How long does it take to fly from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO)?
It usually takes 1 hour and 15 minutes to travel the 420 mi from PDX to MSO.
What airline has the least delays from PDX to MSO?
Consider traveling with Alaska Airlines if you'd like to fly straight from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO) without any delays. This airline has the best track record for punctuality, with an on-time performance of 92%. Want to get notified of any changes? You can check your flight status using the Expedia App.
What is the best time to fly from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO)?
Opt for a flight from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this hour 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.
What airports do you fly into for Missoula from Portland Intl. Airport (PDX)?
Missoula Intl. Airport (MSO) is the only airport in Missoula with direct flights from Portland Intl. Airport (PDX). Explore the available options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO) last-minute?
Booking your ticket from PDX to MSO just before your getaway is usually more expensive. However, if there's some wiggle room with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a PDX to MSO flight and hotel package?
Compared with arranging flights and hotels separately, booking a PDX to MSO flight and hotel package with Expedia could result in significant savings. What's more, managing everything in one place takes the hassle out of travel planning. Just pick your flights and choose from our wide range of hotels, then customize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Missoula Intl. Airport (MSO)?
If you reserved your PDX to MSO flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the ticket type 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, go to our Customer Service portal for further details.

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