What airlines fly to Missoula?

Delta, United Airlines and American Airlines are the top three most popular airlines that fly to Missoula from Portland, Maine according to our data. Delta is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Missoula. Keep in mind that there are 4 different airlines that fly to Missoula on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Portland Airport to Missoula Johnson-Bell Field Airport?

Prices for flights from Portland Airport to Missoula Johnson-Bell Field Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Portland Airport to Missoula Johnson-Bell Field Airport?

There are 2 operators available for flights from Portland Airport to Missoula Johnson-Bell Field Airport as of November 2025.

How old do you have to be to fly from Portland Airport to Missoula Johnson-Bell Field Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Missoula Johnson-Bell Field Airport.

What documentation or ID do you need to fly to Missoula Johnson-Bell Field Airport?

The travel and health documents required for your trip to Missoula Johnson-Bell Field Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Missoula Johnson-Bell Field Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$456 Cheap Flights from Portland to Missoula in 2025/26

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Cheap round-trip flights

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12:48 pm - 9:46 pmPWM-MSO

10h 58m2 stops

8:00 am - 10:19 pmMSO-PWM

12h 19m2 stops

$484Delta

Find Deal

Sat, Nov 15 - Tue, Nov 18

6:00 am - 4:10 pmPWM-MSO

12h 10m2 stops

6:15 am - 6:54 pmMSO-PWM

10h 39m2 stops

$487United Airlines

Find Deal

Wed, Dec 3 - Wed, Dec 10

6:00 am - 4:10 pmPWM-MSO

12h 10m2 stops

2:35 pm - 11:09 pmMSO-PWM

30h 34m2 stops

$523United Airlines

Find Deal

Fri, Dec 5 - Mon, Dec 8

6:00 am - 4:10 pmPWM-MSO

12h 10m2 stops

2:35 pm - 6:42 pmMSO-PWM

26h 07m3 stops

$538United Airlines

Find Deal

Fri, Dec 5 - Mon, Dec 8

3:20 pm - 9:47 pmPWM-MSO

8h 27m1 stop

6:20 am - 3:48 pmMSO-PWM

7h 28m1 stop

$539United Airlines

Find Deal

Sat, Nov 15 - Tue, Nov 18

5:30 am - 1:33 pmPWM-MSO

10h 03m2 stops

6:20 am - 3:48 pmMSO-PWM

7h 28m1 stop

$544United Airlines

Find Deal

Sat, Nov 15 - Tue, Nov 18

7:02 am - 8:06 pmPWM-MSO

15h 04m2 stops

7:01 am - 11:59 pmMSO-PWM

14h 58m2 stops

$549American Airlines

Find Deal

Sat, Nov 15 - Tue, Nov 18

4:53 pm - 12:36 amPWM-MSO

9h 43m2 stops

7:45 am - 10:23 pmMSO-PWM

12h 38m2 stops

$623Delta

Find Deal

Mon, Dec 8 - Mon, Dec 15

7:02 am - 8:02 pmPWM-MSO

15h 00m3 stops

7:00 am - 9:37 pmMSO-PWM

12h 37m3 stops

$1,137American Airlines

Find Deal

Fri, Dec 5 - Mon, Dec 8

7:02 am - 8:02 pmPWM-MSO

15h 00m3 stops

7:00 am - 9:37 pmMSO-PWM

12h 37m3 stops

$1,199American Airlines

Find Deal

Mon, Dec 8 - Mon, Dec 15

United Airlines flights from Portland, Maine to Missoula

Our best United Airlines deals on Portland, Maine to Missoula flight tickets

United Airlines

Dec 3

PWM6:00 amPortland

12h 10m

2 stops

MSO4:10 pmMissoula Johnson-Bell Field

Dec 10

MSO6:15 amMissoula Johnson-Bell Field

10h 39m

2 stops

PWM6:54 pmPortland

$487

Find similar

United Airlines

Dec 5

PWM6:00 amPortland

12h 10m

2 stops

MSO4:10 pmMissoula Johnson-Bell Field

Dec 8

MSO2:35 pmMissoula Johnson-Bell Field

30h 34m

2 stops

PWM11:09 pmPortland

$523

Find similar

United Airlines

Nov 8

PWM3:20 pmPortland

8h 27m

1 stop

MSO9:47 pmMissoula Johnson-Bell Field

Nov 11

MSO6:20 amMissoula Johnson-Bell Field

7h 28m

1 stop

PWM3:48 pmPortland

$529

Find similar

Delta flights from Portland, Maine to Missoula

Our best Delta deals on Portland, Maine to Missoula flight tickets

Delta

Nov 15

PWM12:48 pmPortland

10h 58m

2 stops

MSO9:46 pmMissoula Johnson-Bell Field

Nov 18

MSO8:00 amMissoula Johnson-Bell Field

12h 19m

2 stops

PWM10:19 pmPortland

$484

Find similar

Delta

Nov 15

PWM1:25 pmPortland

11h 48m

2 stops

MSO11:13 pmMissoula Johnson-Bell Field

Nov 18

MSO6:16 pmMissoula Johnson-Bell Field

17h 34m

2 stops

PWM1:50 pmPortland

$538

Find similar

Delta

Dec 8

PWM4:53 pmPortland

9h 43m

2 stops

MSO12:36 amMissoula Johnson-Bell Field

Dec 15

MSO7:45 amMissoula Johnson-Bell Field

12h 38m

2 stops

PWM10:23 pmPortland

$623

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Sat 11/15

12:48 pm-9:46 pm

2 stops10h 58m

Missoula Johnson-Bell Field

Tue 11/18

8:00 am-10:19 pm

2 stops12h 19m

$484

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Wed 12/3

6:00 am-4:10 pm

2 stops12h 10m

Missoula Johnson-Bell Field

Wed 12/10

6:15 am-6:54 pm

2 stops10h 39m

$487

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Fri 12/5

6:00 am-4:10 pm

2 stops12h 10m

Missoula Johnson-Bell Field

Mon 12/8

2:35 pm-11:09 pm

2 stops30h 34m

$523

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Fri 12/5

6:00 am-4:10 pm

2 stops12h 10m

Missoula Johnson-Bell Field

Mon 12/8

2:35 pm-6:42 pm

3 stops26h 07m

$538

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Sat 11/15

3:20 pm-9:47 pm

1 stop8h 27m

Missoula Johnson-Bell Field

Tue 11/18

6:20 am-3:48 pm

1 stop7h 28m

$539

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Sat 11/15

5:30 am-1:33 pm

2 stops10h 03m

Missoula Johnson-Bell Field

Tue 11/18

6:20 am-3:48 pm

1 stop7h 28m

$544

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Sat 11/15

7:02 am-8:06 pm

2 stops15h 04m

Missoula Johnson-Bell Field

Tue 11/18

7:01 am-11:59 pm

2 stops14h 58m

$549

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Mon 12/8

4:53 pm-12:36 am

2 stops9h 43m

Missoula Johnson-Bell Field

Mon 12/15

7:45 am-10:23 pm

2 stops12h 38m

$623

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Fri 12/5

7:02 am-8:02 pm

3 stops15h 00m

Missoula Johnson-Bell Field

Mon 12/8

7:00 am-9:37 pm

3 stops12h 37m

$1,137

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Mon 12/8

7:02 am-8:02 pm

3 stops15h 00m

Missoula Johnson-Bell Field

Mon 12/15

7:00 am-9:37 pm

3 stops12h 37m

$1,199

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Portland, Maine to Missoula

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Missoula?

On average, the least expensive day to fly to Missoula from Portland, Maine is on a Saturday. momondo users have found tickets for Saturday departures for as low as $566. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Tuesday is the most expensive day to depart from Portland, Maine because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $854.

What is the cheapest time of day to depart on your flight to Missoula?

The cheapest time of day to fly to Missoula is in the morning when flights can be purchased for as low as $727. Flights in the afternoon are often more expensive with an average ticket price of $766.

When to book flights from Portland, Maine to Missoula

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Missoula according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland, Maine to Missoula (PWM to MSO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Missoula

Direct flights	None

There are no direct flights from Portland, Maine to Missoula. There are no popular flight routes from Portland, Maine to Missoula.

Search flight deals

How far is Portland to Missoula Johnson-Bell Field by plane?
The distance between Portland and Missoula Johnson-Bell Field is about 2109.3 mi. Flights usually cover this in 8h 27m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Portland Airport to Missoula Johnson-Bell Field Airport?
Prices for flights from Portland Airport to Missoula Johnson-Bell Field Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to Missoula Johnson-Bell Field Airport?
There are 2 operators available for flights from Portland Airport to Missoula Johnson-Bell Field Airport as of November 2025.
How old do you have to be to fly from Portland Airport to Missoula Johnson-Bell Field Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Missoula Johnson-Bell Field Airport.
What documentation or ID do you need to fly to Missoula Johnson-Bell Field Airport?
The travel and health documents required for your trip to Missoula Johnson-Bell Field Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Missoula Johnson-Bell Field Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Portland, Maine to Missoula?
momondo data reveals that the most frequently booked airline on the route from Portland, Maine to Missoula is United Airlines, representing 57% of all bookings. The subsequent popular airline is American Airlines at 43%.

Best airlines flying from Portland, Maine to Missoula

Compare and see reviews for airlines that fly from Portland, Maine to Missoula with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $308	Free Cancellation	Rating 7.4 9,002 reviews		Search United Airlines flights
American Airlines	PriceFrom $429	Free Cancellation	Rating 7.2 11,042 reviews		Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Missoula?

Finding the right flight to Missoula from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Missoula quick and easy, saving you time and money.

Can I find flights from Portland to Missoula with flexible booking policies on momondo?

momondo does allow users to show only those flights to Missoula from Portland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Portland to Missoula?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Missoula from Portland.

I’m not ready to book a flight from Portland to Missoula right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Missoula, momondo offers a useful price alert feature which will track prices for flights to Missoula from Portland and alert you when they change.

An easier way to manage your Missoula trip

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Cheap flights from Portland, Maine to Missoula from $484

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Missoula departing on 11/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Portland, Maine to Missoula

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Our best Delta deals on Portland, Maine to Missoula flight tickets

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How to get the cheapest flight ticket from Portland, Maine to Missoula

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Missoula?

What is the cheapest time of day to depart on your flight to Missoula?

The cheapest time of day to fly to Missoula is in the morning when flights can be purchased for as low as $727. Flights in the afternoon are often more expensive with an average ticket price of $766.

What airlines fly to Missoula?

When to book flights from Portland, Maine to Missoula

Cheap Portland, Maine to Missoula (PWM to MSO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Missoula

Direct flights

How far is Portland to Missoula Johnson-Bell Field by plane?

When did momondo last update prices for flights from Portland Airport to Missoula Johnson-Bell Field Airport?

How many operators does momondo search for flights from Portland Airport to Missoula Johnson-Bell Field Airport?

How old do you have to be to fly from Portland Airport to Missoula Johnson-Bell Field Airport?

What documentation or ID do you need to fly to Missoula Johnson-Bell Field Airport?

What is the most popular airline from Portland, Maine to Missoula?

Best airlines flying from Portland, Maine to Missoula

Compare and see reviews for airlines that fly from Portland, Maine to Missoula with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Missoula?

Can I find flights from Portland to Missoula with flexible booking policies on momondo?

How can momondo help me find flights from Portland to Missoula?

I’m not ready to book a flight from Portland to Missoula right now. Can momondo alert me if prices change?

An easier way to manage your Missoula trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Montana