£111 Cheap Flights from Missoula (MSO) to Portland (PDX)

View £111 flight on Sun, 24 May 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at £111 for one-way flights and £221 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 20 May - Wed, 27 May
MSO
Missoula
PDX
Portland
£221 Return, found 1 day ago
£221
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Missoula to Portland, returning Wed, 27 May, priced at £221 found 1 day ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
MSO
Missoula
PDX
Portland
£228 Return, found 1 day ago
£228
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Missoula to Portland, returning Wed, 27 May, priced at £228 found 1 day ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
MSO
Missoula
PDX
Portland
£254 Return, found 1 day ago
£254
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Missoula to Portland, returning Wed, 27 May, priced at £254 found 1 day ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
MSO
Missoula
PDX
Portland
£258 Return, found 1 day ago
£258
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Missoula to Portland, returning Wed, 27 May, priced at £258 found 1 day ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
MSO
Missoula
PDX
Portland
£266 Return, found 1 day ago
£266
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Missoula to Portland, returning Wed, 27 May, priced at £266 found 1 day ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
MSO
Missoula
PDX
Portland
£271 Return, found 1 day ago
£271
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Missoula to Portland, returning Wed, 27 May, priced at £271 found 1 day ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
MSO
Missoula
PDX
Portland
£274 Return, found 1 day ago
£274
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Missoula to Portland, returning Wed, 27 May, priced at £274 found 1 day ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
MSO
Missoula
PDX
Portland
£281 Return, found 1 day ago
£281
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Missoula to Portland, returning Wed, 27 May, priced at £281 found 1 day ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
MSO
Missoula
PDX
Portland
£282 Return, found 1 day ago
£282
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Missoula to Portland, returning Wed, 27 May, priced at £282 found 1 day ago
Alaska Airlines
Mon, 18 May - Mon, 25 May
MSO
Missoula
PDX
Portland
£287 Return, found 1 day ago
£287
Return
found 1 day ago
Select Alaska Airlines flight, departing Mon, 18 May from Missoula to Portland, returning Mon, 25 May, priced at £287 found 1 day ago

Frequently asked questions

How much is a flight from MSO to Portland Airport?
The lowest price advertised for a round-trip journey between Missoula Intl. Airport (MSO) and Portland Airport is £221. But you better act soon. This figure is based on fares offered within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from MSO to Portland Airport?
When it comes to cancellation fees, every airline has a different set of terms and conditions. If you decide to cancel your getaway, visit our Customer Service Portal.
How do I find cheap flights from MSO to Portland Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for MSO to Portland Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from MSO to PDX?
With a flight distance of 670 kilometres, it's only a hop from Missoula Intl. Airport (MSO) to PDX. It might be a quick flight, but it's still worth bringing along a book to read.
Which airlines fly direct from Missoula Intl. Airport to Portland Airport?
Unfortunately, there are no airlines that fly directly between Missoula Intl. Airport (MSO) and Portland Intl. Airport (PDX). You'll need to book a flight with one or more stops.
Are MSO to Portland Airport flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can occasionally score a bargain, with some of the cheapest fares from Missoula Intl. Airport to Portland Airport arising a few weeks before the date of departure. If you'd rather book ahead, Expedia compares and updates all the best flight deals continually — as early as a year in advance in some cases. It depends on the carrier though, as not all airlines release prices that far in advance.

Frequently asked questions

What is the cheapest month to fly from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
April is typically the cheapest month to fly from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.), with average return fares of approximately £357. This is about 16% lower than the average price throughout the year. April often sees lower prices as it's outside of peak holiday or summer travel seasons, leading to reduced demand. Other cheap months to fly from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) include May and September.
How do I find cheap flights from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
To find a cheap flight from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
The best airline to fly with from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) will differ from traveller to traveller. If you like to fly early, AS offers early morning flights. If price is the most important factor, AS typically offers the lowest fares. AS offers the most daily flights from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.), which is brilliant if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
The best time to fly from Missoula, MT (MSO-Missoula Intl.) (MSO) to Portland, OR (PDX-Portland Intl.) (PDX) for a good balance of price and availability is typically April or September. Based on booking data from the past year, you can expect average return flight prices around £357 during these months. These periods often offer pleasant weather for travel and a good selection of flights without the peak season crowds.
How many flights per day from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
There are approximately 13 connecting flights per day from Missoula Intl. (MSO) to Portland Intl. (PDX). Some common connection points include Seattle - Tacoma Intl. (SEA), Salt Lake City Intl. (SLC), and Denver Intl. (DEN).
What is the earliest flight from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
The earliest flight from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) typically departs at approximately 5:00 AM local time, operated by Delta. This is a seasonal service active in January, February, March, and April. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
You'll typically find the most flights from Missoula, MT (MSO-Missoula Intl.) (MSO) to Portland, OR (PDX-Portland Intl.) (PDX) on a Thursday, with around 12 flights available. This gives you a good selection for your travel plans. Major airlines on this route include Alaska Airlines, Delta Air Lines, and United Airlines.
What are the most popular departure times for flights from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
The most popular departure times for flights from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) are between 12pm and 3pm. Approximately 44% of passengers prefer this time window. Many major carriers, including Alaska Airlines and Delta Air Lines, offer flights during this window. This timing works well because it allows for a morning in Missoula and an afternoon arrival in Portland.
How long does it take to fly from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
Direct flights from MSO to PDX usually take about 2 hours, traveling roughly 416 miles. If you opt for a connecting flight, expect to add around 4 hours 50 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
Select the "Business class" and "First class" filters when looking for MSO to PDX flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) flight with Expedia?
It's easy to earn miles on a Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Portland from Missoula Intl. (MSO)?
When traveling from Missoula Intl. (MSO) to Portland, you can fly into Portland Intl. Jetport (PWM) and Portland Intl. (PDX). Some flights may connect through major hubs like Denver Intl. (DEN), Salt Lake City Intl. (SLC), Minneapolis - St. Paul Intl. (MSP) before reaching Portland. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) at the last minute?
Typically, booking a last minute flight from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) flight and hotel package?
Securing a Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
If you booked your Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, 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'd like more information.

Travel information

Origin airport
Missoula Intl.
Destination airport
Portland Intl.
Airlines serving
Alaska Airlines
Return price
£221
Distance
666 km
Average flight time
1 hour 36 mins

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