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

Delta and United Airlines can get you from Portland, Maine to Missoula in just under 8h 12m. Your travel time can differ by up to 1h 42m. 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. These flights start at 47% lower than the current average price 3 months from now.

In terms of precipitation, rainfall in Missoula ranges from 0.7 - 2.1 inches per month. June is typically the wettest month, when rainfall can reach 2.1 in. February is typically the driest time to visit Missoula when rainfall is around 0.7 in.

If weather is an important factor for your trip to Missoula, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 24.8 F).

What is the cheapest time of day to fly from PWM to MSO?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland, Maine to Missoula as you normally would.

Most accurate provider : When it comes to deals on Portland, Maine-Missoula flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland, Maine-Missoula flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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.

$296+ Flights from Portland, ME to Missoula

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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 December 12, 2025.

Sun 12/287:17 amPWM - MSO

2 stops16h 07mAmerican Airlines

Sun 1/47:00 amMSO - PWM

2 stops13h 55mAmerican Airlines

Deal found 12/11

$1,843

Best flights from Portland to Missoula
Discover carefully curated flight deals from Portland to Missoula that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Mon 1/2612:20 pmPWM - MSO

2 stops9h 54mDelta

Tue 2/37:55 amMSO - PWM

2 stops13h 27mDelta

Deal found 12/9

$369

Sat 5/23:30 pmPWM - MSO

1 stop8h 12mUnited Airlines

Wed 5/66:15 amMSO - PWM

1 stop7h 20mUnited Airlines

Deal found 12/9

$449

Thu 1/88:40 amPWM - MSO

2 stops15h 11mUnited Airlines

Thu 1/155:15 pmMSO - PWM

2 stops19h 24mUnited Airlines

Deal found 12/11

$568

Mon 1/269:40 amPWM - MSO

2 stops14h 11mUnited Airlines

Tue 2/36:00 amMSO - PWM

3 stops15h 28mUnited Airlines

Deal found 12/9

$739

Sun 12/287:17 amPWM - MSO

2 stops16h 07mAmerican Airlines

Sun 1/47:00 amMSO - PWM

2 stops13h 55mAmerican Airlines

Deal found 12/11

$1,843

Last-minute flights from Portland to Missoula
Discover last-minute flight deals from Portland to Missoula. Data last updated December 12, 2025 and is based on user searches.

Sun 12/287:17 amPWM - MSO

2 stops16h 07mAmerican Airlines

Sun 1/47:00 amMSO - PWM

2 stops13h 55mAmerican Airlines

Deal found 12/11

$1,843

Thu 1/88:40 amPWM - MSO

2 stops15h 11mUnited Airlines

Thu 1/155:15 pmMSO - PWM

2 stops19h 24mUnited Airlines

Deal found 12/11

$568

Mon 1/2612:20 pmPWM - MSO

2 stops9h 54mDelta

Tue 2/37:55 amMSO - PWM

2 stops13h 27mDelta

Deal found 12/9

$369

Mon 1/269:40 amPWM - MSO

2 stops14h 11mUnited Airlines

Tue 2/36:00 amMSO - PWM

3 stops15h 28mUnited Airlines

Deal found 12/9

$739

One-way flights from Portland to Missoula
Search for one-way flight options from Portland to Missoula. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Fri 1/307:00 amPWM - MSO

2 stops15h 45mAmerican Airlines

Deal found 12/11

$296

Fri 1/303:12 pmPWM - MSO

3 stops24h 23mUnited Airlines

Deal found 12/11

$462

Thu 1/17:30 pmPWM - MSO

2 stops28h 11mUnited Airlines

Deal found 12/11

$472

Thu 1/15:20 pmPWM - MSO

2 stops21h 28mAmerican Airlines

Deal found 12/11

$483

Find flight deals from Portland to Missoula

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$369 (Delta)
One-way from	$296 (American Airlines)
Popular in	March
Cheapest in	November
Average price	$468

Provider with most accurate pricing for Portland-Missoula Johnson-Bell Field flight deals.

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Provider most trusted by Cheapflights users for Portland-Missoula Johnson-Bell Field flights.

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From Portland to Missoula Johnson-Bell Field

Search Deals

One-way flight from Portland to Missoula Johnson-Bell Field

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($63 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($34 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Mon 1/26

12:20 pm-8:14 pm

2 stops9h 54m

Missoula Johnson-Bell Field

Tue 2/3

7:55 am-11:22 pm

2 stops13h 27m

$369

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Sat 5/2

3:30 pm-9:42 pm

1 stop8h 12m

Missoula Johnson-Bell Field

Wed 5/6

6:15 am-3:35 pm

1 stop7h 20m

$449

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Thu 1/8

8:40 am-9:51 pm

2 stops15h 11m

Missoula Johnson-Bell Field

Thu 1/15

5:15 pm-2:39 pm

2 stops19h 24m

$568

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Mon 1/26

9:40 am-9:51 pm

2 stops14h 11m

Missoula Johnson-Bell Field

Tue 2/3

6:00 am-11:28 pm

3 stops15h 28m

$739

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Sun 12/28

7:17 am-9:24 pm

2 stops16h 07m

Missoula Johnson-Bell Field

Sun 1/4

7:00 am-10:55 pm

2 stops13h 55m

$1,843

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Fri 1/30

7:00 am-8:45 pm

2 stops15h 45m

$296

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Fri 1/30

3:12 pm-1:35 pm

3 stops24h 23m

$462

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Thu 1/1

7:30 pm-9:41 pm

2 stops28h 11m

$472

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Thu 1/1

5:20 pm-12:48 pm

2 stops21h 28m

$483

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Compare providers for flights from Portland to Missoula

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Missoula in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland, Maine-Missoula flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

Cheapflights Insights

Everything you need to know about your flight from Portland to Missoula

What is the cheapest month to book a flight from Portland, Maine to Missoula?

Currently, July is the cheapest month in which you can book a flight from Portland, Maine to Missoula (average of $211). Flying from Portland, Maine to Missoula in December is currently the most expensive (average of $443). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Missoula

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

9,095 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

United Airlines

7.4

Good

9,095 reviews

United Airlines

7.4

Good

9,095 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

American Airlines

7.2

Good

11,050 reviews

United Airlines

7.4

Good

9,095 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

How long is the flight from Portland, Maine to Missoula?
Delta and United Airlines can get you from Portland, Maine to Missoula in just under 8h 12m. Your travel time can differ by up to 1h 42m. 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. These flights start at 47% lower than the current average price 3 months from now.
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.
What is the cheapest month to book a flight from Portland, Maine to Missoula?
Currently, July is the cheapest month in which you can book a flight from Portland, Maine to Missoula (average of $211). Flying from Portland, Maine to Missoula in December is currently the most expensive (average of $443). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Other flights to Missoula

Top 2 airlines flying from Portland to Missoula

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$308	Average$576	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$429	Average$634	FlexibilityNo cancel fee	On-time71%

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$296+ Cheap flights from Portland, ME to Missoula (PWM - MSO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/30. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portland to Missoula with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Portland to Missoula

Cheapest flights from Portland to MissoulaExplore 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 December 12, 2025.

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 December 12, 2025.

Find flight deals from Portland to Missoula

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portland to Missoula that are best for you.

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 December.

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.

Cheapflights Insights

Everything you need to know about your flight from Portland to Missoula

What is the cheapest month to book a flight from Portland, Maine to Missoula?

Reviews of airlines servicing Missoula

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.

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?

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

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

How can I find direct flights from Portland to Missoula?

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

What is the cheapest month to book a flight from Portland, Maine to Missoula?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Missoula

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Portland to Missoula

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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 December 12, 2025.