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$139 Cheap Flights from Missoula (MSO) to Portland (PDX)

View $139 flight on Sat, Oct 31, 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 to Portland (MSO-PDX)

Prices were available within the past 7 days and start at $139 for one-way flights and $257 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Oct 31 - Sat, Nov 7
MSO
Missoula
PDX
Portland
$257 Roundtrip, found 11 hours ago
$257
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Sat, Oct 31 from Missoula to Portland, returning Sat, Nov 7, priced at $257 found 11 hours ago
Delta
Tue, Nov 3 - Tue, Nov 17
MSO
Missoula
PDX
Portland
$267 Roundtrip, found 2 days ago
$267
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Nov 3 from Missoula to Portland, returning Tue, Nov 17, priced at $267 found 2 days ago
Alaska Airlines
Sat, Oct 31 - Sat, Nov 7
MSO
Missoula
PDX
Portland
$267 Roundtrip, found 11 hours ago
$267
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Sat, Oct 31 from Missoula to Portland, returning Sat, Nov 7, priced at $267 found 11 hours ago
Delta
Tue, Nov 3 - Tue, Nov 10
MSO
Missoula
PDX
Portland
$272 Roundtrip, found 3 days ago
$272
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Nov 3 from Missoula to Portland, returning Tue, Nov 10, priced at $272 found 3 days ago
Alaska Airlines
Thu, Nov 5 - Sat, Nov 14
MSO
Missoula
PDX
Portland
$272 Roundtrip, found 12 hours ago
$272
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Thu, Nov 5 from Missoula to Portland, returning Sat, Nov 14, priced at $272 found 12 hours ago
Alaska Airlines
Sat, Jan 23 - Sat, Jan 30
MSO
Missoula
PDX
Portland
$275 Roundtrip, found 19 hours ago
$275
Roundtrip
found 19 hours ago
Select Alaska Airlines flight, departing Sat, Jan 23 from Missoula to Portland, returning Sat, Jan 30, priced at $275 found 19 hours ago
Alaska Airlines
Wed, Nov 4 - Tue, Nov 10
MSO
Missoula
PDX
Portland
$277 Roundtrip, found 18 hours ago
$277
Roundtrip
found 18 hours ago
Select Alaska Airlines flight, departing Wed, Nov 4 from Missoula to Portland, returning Tue, Nov 10, priced at $277 found 18 hours ago
Delta
Sat, Jan 23 - Sat, Jan 30
MSO
Missoula
PDX
Portland
$282 Roundtrip, found 1 day ago
$282
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Jan 23 from Missoula to Portland, returning Sat, Jan 30, priced at $282 found 1 day ago
United
Sat, Oct 17 - Sat, Oct 24
MSO
Missoula
PDX
Portland
$287 Roundtrip, found 1 day ago
$287
Roundtrip
found 1 day ago
Select United flight, departing Sat, Oct 17 from Missoula to Portland, returning Sat, Oct 24, priced at $287 found 1 day ago
American Airlines
Tue, Dec 1 - Wed, Dec 2
MSO
Missoula
PDX
Portland
$827 Roundtrip, found 2 days ago
$827
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Dec 1 from Missoula to Portland, returning Wed, Dec 2, priced at $827 found 2 days ago

Alternative airports near Portland

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

Select flight to Portland Intl. PDX. Cheapest and Closest option available. Average driving time to city center is 17 minutes. Flights from $547
PDX
Portland Intl.
CheapestClosest
Average driving time to city center17 min
Flights from $547

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

February is typically the cheapest month to fly

From $147 - $261 per traveler.

What you need to know for your flight from Missoula Intl. to Portland Intl.

Missoula (MSO) to Portland (PDX) at a glance

Explore a range of airlines offering flights from Missoula (MSO) to Portland (PDX) on this convenient domestic route. Whether you prefer full-service options or budget-friendly choices, you can easily compare flights to find the itinerary that suits your travel plans and budget. Discover the highlights of Portland's iconic attractions and neighborhoods as you plan your adventure. Here are the essential details for your journey from Missoula International Airport to Portland International Airport.

  • Fastest flight duration: around 1h 30m non-stop
  • Route distance: roughly 400 miles (645 km)
  • Flights per week: around 10 departures on average
  • Typical fares (one-way): economy tickets often range from $80–$340, depending on seasonality and how far ahead you book

Flights from Missoula International Airport (MSO) to Portland International Airport (PDX)

According to recent traveler bookings, here are the top airlines favored for flights from Missoula to Portland, offering both non-stop and one-stop options. Common layover points include Seattle-Tacoma International Airport (SEA) with a layover of about 1 hour and 45 minutes, Salt Lake City International Airport (SLC) with a 1-hour layover, and Denver International Airport (DEN) with a layover of roughly 1 hour and 30 minutes. This variety allows you to balance price, total travel time, and cabin class for the ideal travel experience.

  • Alaska Airlines: This full-service airline provides both non-stop and one-stop options, with one-way ticket prices generally falling between $80 and $355. It dominates the route, handling around 85% of departures, and offers a typical non-stop flight duration of 1 hour and 30 minutes.
  • Delta: As a full-service carrier, Delta offers one-stop flights with one-way fares that usually range from $80 to $490. It represents about 9% of departures on this route, featuring an in-flight duration of 3 hours and a total travel time of approximately 4 hours and 30 minutes, including layover time.
  • United: Another full-service option, United provides one-stop services with one-way fares typically between $125 and $335. It accounts for roughly 4% of route departures, with an in-flight duration of 3 hours and a total journey time of around 4 hours and 30 minutes, factoring in layovers.
  • Hawaiian Airlines: This full-service carrier offers non-stop flights, with one-way fares ranging from $85 to $270. It comprises about 2% of departures for this route, allowing for a total travel time of 1 hour and 30 minutes.

Travelers flying from Missoula to Portland have the option to upgrade their experience, with Alaska Airlines offering first class and business class, while Delta provides a premium economy service.

Best time to fly from Missoula (MSO) to Portland (PDX)

The most popular months for travelers flying from Missoula to Portland are March, April, and June, when peak temperatures in Portland reach up to 62.4°F in June. If you prefer quieter travel, consider September, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 64°F. For better deals, October usually offers the lowest average one-way fare around $156. Flight availability peaks in May and June, with approximately 12 flights per week, making it easier to find convenient departure times. January has the fewest flights, with approximately 8 flights per week.

  • Cheapest time to fly: October usually offers good deals with average one-way fare around $156, roughly 13% cheaper than the yearly average.
  • Another budget-friendly time to fly: December typically offers an average one-way fare of around $159.
  • Most flight options: May and June have the highest number of flights from Missoula to Portland, with approximately 12 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January40.8°F (4.9°C)Average8$191
February41.4°F (5.2°C)Average9$179
March45.0°F (7.2°C)Moderately High10$192
April49.5°F (9.7°C)Moderately High10$190
May56.7°F (13.7°C)Moderately Low12$179
June62.4°F (16.9°C)Moderately High12$181
July69.1°F (20.6°C)Average10$199
August70.3°F (21.3°C)Moderately Low10$178
September64.0°F (17.8°C)Moderately Low11$172
October54.7°F (12.6°C)Average10$156
November45.5°F (7.5°C)Average10$196
December39.9°F (4.4°C)Average10$159

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative route from Missoula (MSO) to Portland (PDX)

  • Missoula to Troutdale (MSO-TTD): Troutdale Airport (TTD) is located approximately 10 miles from Portland International Airport (PDX).

How to find the best prices for flights from Missoula (MSO) to Portland (PDX)

Getting some of the best deals on flights from Missoula to Portland is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Morning departures (5 am-12 pm) often provide lower prices, while afternoon flights (12 pm-6 pm) are more popular. Additionally, flying on Saturday typically offers cheaper rates, although Friday is the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Portland International Airport from Missoula International Airport

Portland welcomes travelers from Missoula with a range of transport options based on price, convenience, and proximity. Here's how to reach Portland efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Portland, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Portland International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Portland International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Portland International Airport, both the Portland International Airport Bus Stop (a bus station) and Portland International Airport Station (a metro station) are conveniently located about 0.3 miles away on foot, while Portland Union Station (a train station) is situated approximately 9 miles from the airport by car.

Frequently asked questions

How much does a flight from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) cost?
You can find cheap one-way flights from $139 and cheap return flights from $257 Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) with Expedia. One-way flights generally range between $160 and $745, and roundtrip flights usually range from $270 to $1007. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
April is the cheapest month to fly from Missoula (MSO) to Portland (PDX), with average round-trip fares around $257. This is about 16% lower than the average price throughout the year, as April often has less travel demand compared to the summer months. Other cheap months to fly from Missoula to Portland include May and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
Hawaiian Airlines offers around 7 weekly direct flights from MSO to PDX.
What is the cheapest airline that flies from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
Alaska Airlines is one of the cheapest airlines offering nonstop flights from Missoula, MT (MSO) to Portland, OR (PDX), with round-trip tickets starting from around $462. You can also find connecting flights with American Airlines, which is one of the cheapest options, starting from around $430. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
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) to Portland, OR (PDX) will differ from traveler to traveler. If you like to fly early, Alaska Airlines offers early morning flights. If price is the most important factor, Alaska Airlines typically offers the lowest fares. Alaska Airlines offers the most daily flights from Missoula to Portland, which is great 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.)?
For flights from Missoula, MT (MSO) to Portland, OR (PDX), the best times to fly are in April and September. Both months offer average return flight prices of about $257, making them budget-friendly options. Additionally, you'll enjoy mild weather and fewer crowds, enhancing your travel experience.*Prices based on flights available on Expedia in the last year.
How many flights per day from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
On average, there are around 1 nonstop flights per day from Missoula Intl. (MSO) to Portland Intl. (PDX). For more options, look at flights that include layovers.
What is the earliest flight from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
The earliest flight from Missoula International Airport (MSO) to Portland International Airport (PDX) usually leaves at around 5:00 AM, operated by Delta. Catching this early flight allows you to maximize your time in Portland. This service is seasonal, so check for availability during your travel months. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
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 Intl. (MSO) to Portland Intl. (PDX) are in the early afternoon, from 12pm to 3pm. About 37% of passengers prefer this time window. Many major carriers, including Alaska Airlines and United Airlines, offer flights during this window. This timing is favored because it allows travelers to enjoy a leisurely morning before heading to the airport.
How long does it take to fly from Missoula, MT (MSO-Missoula Intl.) to Portland, OR (PDX-Portland Intl.)?
Flying nonstop from MSO to PDX takes around 1 hour 30 minutes, with the route covering approximately 416 miles. Flights with a layover typically take 3 hours longer than direct options. 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.)?
First class is available on flights from MSO to PDX. First class cabins are available on:

  • United Airlines
  • Delta Air Lines
  • American Airlines

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.) Portland Vacation Packages 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, Delta, United
Roundtrip price
$257
Distance
416 mi
Average flight time
1 hour 31 mins

Book with confidence

Missoula to Portland Flights

The cheapest times to fly from Missoula to Portland

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

 

The best time to book a flight from Missoula to Portland

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

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 Portland in 2026. You can also book with separate airlines for your outbound and return journeys, from $139 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 Portland 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 Portland 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 Portland Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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