Cheap flights from Portland to Missoula

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Compare Portland to Missoula flight deals

Find the cheapest month or even day of the year to fly to Missoula

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Flight deals from Portland to Missoula

Looking for a cheap last-minute deal or the best round-trip flight from Portland Airport to Missoula Airport? If you want to travel next month, round-trip fares start from $293. Find the lowest prices on one-way and round-trip tickets right here.

Missoula.$237 per passenger.Departing Sat, Nov 7, returning Tue, Nov 10.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from Portland on Sat, Nov 7, arriving in Missoula.Inbound direct flight with Alaska Airlines departing from Missoula on Tue, Nov 10, arriving in Portland.Price includes taxes and charges.From $237, select.

Missoula.$293 per passenger.Departing Wed, Oct 14, returning Wed, Oct 21.Round-trip flight with United.Outbound indirect flight with United, departing from Portland on Wed, Oct 14, arriving in Missoula.Inbound indirect flight with United, departing from Missoula on Wed, Oct 21, arriving in Portland.Price includes taxes and charges.From $293, select.

Missoula.$312 per passenger.Departing Fri, Dec 11, returning Mon, Dec 14.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from Portland on Fri, Dec 11, arriving in Missoula.Inbound direct flight with Alaska Airlines departing from Missoula on Mon, Dec 14, arriving in Portland.Price includes taxes and charges.From $312, select.

Missoula.$332 per passenger.Departing Wed, Oct 14, returning Wed, Oct 21.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from Portland on Wed, Oct 14, arriving in Missoula.Inbound direct flight with Alaska Airlines departing from Missoula on Wed, Oct 21, arriving in Portland.Price includes taxes and charges.From $332, select.

Missoula.$336 per passenger.Departing Fri, Oct 30, returning Sun, Nov 1.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Portland on Fri, Oct 30, arriving in Missoula.Inbound indirect flight with Delta, departing from Missoula on Sun, Nov 1, arriving in Portland.Price includes taxes and charges.From $336, select.

Missoula.$397 per passenger.Departing Thu, Mar 11, returning Thu, Mar 18.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Portland on Thu, Mar 11, arriving in Missoula.Inbound indirect flight with Delta, departing from Missoula on Thu, Mar 18, arriving in Portland.Price includes taxes and charges.From $397, select.

Missoula.$455 per passenger.Departing Mon, Mar 15, returning Mon, Mar 22.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from Portland on Mon, Mar 15, arriving in Missoula.Inbound direct flight with Alaska Airlines departing from Missoula on Mon, Mar 22, arriving in Portland.Price includes taxes and charges.From $455, select.

Missoula.$465 per passenger.Departing Wed, Sep 30, returning Tue, Oct 6.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Portland on Wed, Sep 30, arriving in Missoula.Inbound indirect flight with Delta, departing from Missoula on Tue, Oct 6, arriving in Portland.Price includes taxes and charges.From $465, select.

Missoula.$467 per passenger.Departing Sun, Nov 1, returning Tue, Dec 1.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Portland on Sun, Nov 1, arriving in Missoula.Inbound indirect flight with Delta, departing from Missoula on Tue, Dec 1, arriving in Portland.Price includes taxes and charges.From $467, select.

Missoula.$772 per passenger.Departing Fri, Sep 25, returning Sun, Sep 27.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Portland on Fri, Sep 25, arriving in Missoula.Inbound indirect flight with Alaska Airlines, departing from Missoula on Sun, Sep 27, arriving in Portland.Price includes taxes and charges.From $772, select.

Find the cheapest month to fly from Portland to Missoula

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Portland to Missoula flights are currently cheapest in November.

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Direct flights from Portland to Missoula

Portland to Missoula: Alternative routes

Compare routes from Portland to Missoula below. You may find an airport to fly into that's cheaper, faster, or easier than Missoula.

Missoula

8km from central Missoula

ClosestCheapest

from $237

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Portland to Missoula: Flight information

The things to know before you go.

Cheapest flight found	$237
Cheapest month to fly	November
Average flight time	1 hr, 35 mins
Most popular airline	Alaska Airlines
Average flights per week	16

Finding cheap flights from Portland to Missoula: Frequently asked questions

How much are round-trip flights from Portland to Missoula?

The best price we found for a round-trip flight from Portland to Missoula is $237. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Portland to Missoula?

1 hour and 35 minutes is the average flight time from Portland to Missoula.

Which airlines fly direct from Portland to Missoula?

Alaska Airlines, SkyWest Airlines and Horizon Air fly direct from Portland to Missoula.

How many flights are there a week from Portland to Missoula?

There are 16 flights per week flying from Portland to Missoula, as of September 2026.

When is the cheapest time to fly from Portland to Missoula?

The cheapest month to fly from Portland to Missoula is usually November.

Which upcoming date is cheapest to fly from Portland Airport to Missoula Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to Missoula Airport on Saturday, November 7, 2026.

Can I get a direct flight from Portland Airport to Missoula Airport?

Yes – the average flight time is 1 hour and 35 minutes.

How can I find the best flight deal to Missoula?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Missoula but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Missoula?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Missoula is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Portland Airport to Missoula?

Currently, Alaska Airlines offers the cheapest flight tickets to Missoula.

Traveling from Portland Airport (PDX) to Missoula Airport (MSO): what you need to know

The average length of a direct flight from Portland Airport to Missoula Airport is 1 hour 30 minutes.
Flights from PDX to MSO start at 10:30 — the first with Alaska Airlines. The latest departure is at 21:47 with Alaska Airlines. Overall, you can choose from six weekly Portland Airport to Missoula Airport flights.
Leave enough time to catch your PDX to MSO flight. It's generally best to arrive two hours before international departures and an hour ahead for domestic flights.
You can expect longer lines in popular months like July. Arriving up to four hours ahead of international flights and two hours for domestic departures will give you ample time for security and boarding.
Flying into Missoula (and then discovering more of the United States!) is a cinch with Alaska Airlines. This popular airline has direct flights from Portland Airport to Missoula Airport.
The airline that tops the list for bookings on this route is Alaska Airlines.
Alaska Airlines is a leader in on-time performance for PDX to MSO flights, with 90.36% of services landing as scheduled.
If you'd like to break up your flight, just uncheck 'Direct flights only' when searching for your ticket from Portland Airport to Missoula Airport. Here are the most popular stopovers between PDX and MSO:
- Denver International Airport
- Los Angeles International Airport
- Salt Lake City Airport

How to find the cheapest flights from Portland Airport (PDX) to Missoula Airport (MSO)

At the moment, $153 is the lowest price we've found for a one-way Portland Airport to Missoula Airport flight. The best price for a return ticket is $237. Bear in mind that fares could change due to availability at the time of booking.
To secure cheap tickets from PDX to MSO, book your trip two months before your departure date.
Plan your trip for July. That's the cheapest month for flights from Portland Airport to Missoula Airport. If you're flexible with your travel dates, use the 'Whole month' tool to find the lowest airfare across every month.
Getting your hands on cheap flights from PDX to MSO is easy with Price Alerts. All you need to do is set up one of these automatic alerts and we'll notify you when there's a better deal.
Pick your preferred departure and arrival times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from Portland Airport to Missoula Airport.

Handy information about Portland Airport (PDX)

PDX is located at 7000 NE Airport Way.
Portland Airport gets high marks for on-time performance. 83% of flights that take off from PDX arrive at their destination on time.
Central Portland to Portland Airport is around 19 kilometers. Depending on traffic, it'll take about 20 minutes to get there if you're ride-sharing, catching a cab or driving.
Expect a trip time of about 40 minutes when using public transport.
Need a handy hotel near PDX? If you're catching an early flight from Portland Airport to Missoula Airport, these accommodation options will have you sleeping moments from your check-in counter:

Arriving at Missoula Airport (MSO)

Consider staying in a hotel close to MSO if you're catching a late Portland Airport to Missoula Airport flight. Select one of these options and avoid the hassle of a long transfer:
Grab a Missoula Airport rental car and discover Missoula and beyond with your own wheels. Budget, Dollar and Hertz are leading providers you can book with here.
To secure the best deal, book your vehicle from Missoula Airport several weeks in advance. Rates generally rise closer to your date of travel.

When to fly to Missoula Airport (MSO)

It's time to work out your travel dates for your flight from Portland Airport to Missoula Airport. July is the busiest month to visit Missoula. If you like a more low-key vibe, go in March.
When reserving your flight from Portland Airport to Missoula Airport, think about the kind of weather you like. July is the warmest month in Missoula, with temperatures ranging from 8ºC (46ºF) to 33ºC (91ºF).
Look for cheap tickets from PDX to MSO in January if you like cooler conditions. Temperatures are at their lowest then, ranging between -16ºC (3ºF) and 2ºC (36ºF) on average.

Explore more of the United States

Missoula has loads to offer, but there are so many other corners of the United States you'll want to see. Around 274 kilometers west of Missoula, a trip to Spokane will fill your itinerary to the brim. Start with leading attractions like Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.
Around 402 kilometers south-west of Missoula, Boise is another essential stop in the United States. Experience major highlights starting with Cathedral Of The Rockies, Boise Depot and St. John's Cathedral.