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Missoula

$369+ Cheap flights from Portland, ME to Missoula (PWM - MSO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — MSO
May 31 — Jun 71
Sun 5/31
Sun 6/7
1 adult, Economy
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Cheap flight deals from Portland to Missoula

Cheapest flights from Portland to Missoula
Explore the most affordable flight options available from Portland to Missoula. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.

This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:00 am
PWM
-
MSO
1 stop7h 34m
United Airlines
Tue 9/112:40 pm
MSO
-
PWM
1 stop7h 21m
United Airlines
Deal found 4/30$369
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:00 am
PWM
-
MSO
1 stop8h 49m
American Airlines
Fri 6/51:15 pm
MSO
-
PWM
1 stop9h 27m
American Airlines
Deal found 4/29$439
This American Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/291:35 pm
PWM
-
MSO
2 stops11h 03m
American Airlines
Tue 6/21:25 pm
MSO
-
PWM
1 stop9h 10m
American Airlines
Deal found 4/27$472
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:39 pm
PWM
-
MSO
2 stops12h 24m
American Airlines
Mon 10/51:29 pm
MSO
-
PWM
2 stops21h 03m
American Airlines
Deal found 4/29$478
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:00 am
PWM
-
MSO
1 stop7h 32m
United Airlines
Wed 5/2712:33 pm
MSO
-
PWM
1 stop7h 18m
United Airlines
Deal found 4/30$479
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:15 am
PWM
-
MSO
3 stops13h 05m
United Airlines
Tue 6/212:34 pm
MSO
-
PWM
1 stop7h 18m
United Airlines
Deal found 4/29$489

Find flight deals from Portland to Missoula

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Missoula (MSO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$369
(United Airlines)
Provider with most accurate pricing for Portland-Missoula Johnson-Bell Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Missoula Johnson-Bell Field flights.
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From Portland to Missoula Johnson-Bell Field
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Missoula that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2026.
Use the filters below to find and compare flights from Portland to Missoula that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Fri 5/29

6:00 am-12:49 pm

1 stop8h 49m

Missoula Johnson-Bell Field

Fri 6/5

1:15 pm-12:42 am

1 stop9h 27m

$439
Quickest round-trip

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Sat 5/23

6:00 am-11:32 am

1 stop7h 32m

Missoula Johnson-Bell Field

Wed 5/27

12:33 pm-9:51 pm

1 stop7h 18m

$479

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Fri 5/29

10:55 am-9:34 pm

2 stops12h 39m

Missoula Johnson-Bell Field

Tue 6/2

12:34 pm-9:52 pm

1 stop7h 18m

$524

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Thu 6/11

6:00 am-11:32 am

1 stop7h 32m

Missoula Johnson-Bell Field

Mon 6/15

7:15 am-11:51 pm

2 stops14h 36m

$573

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Tue 5/12

4:48 pm-12:22 am

2 stops9h 34m

Missoula Johnson-Bell Field

Sat 5/16

5:30 am-11:09 pm

2 stops15h 39m

$595

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Fri 6/12

3:31 pm-9:34 pm

1 stop8h 03m

Missoula Johnson-Bell Field

Mon 6/15

12:33 pm-9:51 pm

1 stop7h 18m

$689

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Thu 7/2

6:00 am-11:32 am

1 stop7h 32m

Missoula Johnson-Bell Field

Tue 7/7

6:25 am-11:30 pm

2 stops15h 05m

$721

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Sorted by cheapest first

Compare providers for flights from Portland to Missoula

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Missoula in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland, Maine-Missoula flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Missoula flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Missoula flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Missoula flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-Missoula flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Missoula

Have a flexible travel schedule? Discover the best time to fly to Missoula from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Missoula

Get insights into the airlines that provide service to Missoula. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Missoula. Reviews last updated May 1, 2026.
Peruse reviews from past customers who have flown with United Airlines and American Airlines from Portland to Missoula to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,675 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,675 reviews
United Airlines
7.4
Good
9,675 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
American Airlines
7.1
Good
11,684 reviews
United Airlines
7.4
Good
9,675 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

Related info for your journey

Find useful and relevant information for your journey from Portland to Missoula. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portland, Maine to Missoula?

    American Airlines and United Airlines can get you from Portland, Maine to Missoula in just under 7h 32m. Your travel time can differ by up to 1h 17m. Airlines will cover a distance of 2111 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Portland, Maine to Missoula round-trip?

    Cheapflights users have booked flights from Portland, Maine to Missoula round-trip from $308. Another airline that can offer you cheap pricing is American Airlines.

  • Can I find deals for flights from Portland to Missoula that include hotel bookings?

    Yes. In addition to deals on Portland to Missoula flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Missoula?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Missoula.

  • Can I find deals for business class flights from Portland to Missoula?

    Yes. Cheapflights offers flight deals from Portland to Missoula by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Top 2 airlines flying from Portland to Missoula

Discover the top 2 airlines that operate flights from Portland to Missoula. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$308Average$550FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$429Average$588FlexibilityNo cancel feeOn-time71%

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