What is the cheapest airline that flies from Portland to Montana?

United Airlines, Delta, and American Airlines are the most popular carriers operating from Portland to Montana

What airlines fly to Montana?

Delta, American Airlines and JetBlue are the top three most popular airlines that fly to Montana from Portland, Maine according to our data. Delta is the first choice among our users, with 28% of people opting to fly with this airline when traveling to Montana. Keep in mind that there are 7 different airlines that fly to Montana 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 Montana?

Prices for flights from Portland Airport to Montana are updated daily.

How many operators does momondo search for flights from Portland Airport to Montana?

There are 3 operators available for flights from Portland Airport to Montana as of March 2026.

How old do you have to be to fly from Portland Airport to Montana?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Montana.

What documentation or ID do you need to fly to Montana?

The required travel and health documents for your Montana trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Montana. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$135 Cheap Flights from Portland to Montana in 2026

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Find the cheapest flights from Portland, Maine to Montana

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 3:50 pm

PWM

BZN

11h 50m

2 stops

7:25 am - 5:49 pm

BZN

PWM

8h 24m

1 stop

$304American Airlines

Tue, Aug 25 - Tue, Sep 1

6:00 am - 3:50 pm

PWM

BZN

11h 50m

2 stops

7:25 am - 5:49 pm

BZN

PWM

8h 24m

1 stop

$324American Airlines

Tue, Aug 25 - Tue, Sep 1

12:00 pm - 6:23 pm

PWM

BZN

8h 23m

1 stop

8:30 am - 5:44 pm

BZN

PWM

7h 14m

1 stop

$339United Airlines

Tue, Aug 25 - Tue, Sep 1

6:15 am - 12:39 pm

PWM

BZN

8h 24m

1 stop

7:25 am - 5:49 pm

BZN

PWM

8h 24m

1 stop

$340American Airlines

Tue, Aug 25 - Tue, Sep 1

6:04 am - 11:29 am

PWM

BZN

7h 25m

1 stop

4:20 pm - 10:22 am

BZN

PWM

16h 02m

2 stops

$344United Airlines

Thu, Apr 23 - Tue, Apr 28

6:00 am - 3:22 pm

PWM

BZN

11h 22m

2 stops

10:41 am - 11:59 pm

BZN

PWM

11h 18m

2 stops

$349United Airlines

Tue, Aug 25 - Tue, Sep 1

6:00 am - 3:02 pm

PWM

BZN

11h 02m

2 stops

7:25 am - 5:49 pm

BZN

PWM

8h 24m

1 stop

$365American Airlines

Wed, Aug 19 - Mon, Aug 24

3:00 pm - 10:37 pm

PWM

BIL

9h 37m

2 stops

6:15 am - 10:33 pm

BIL

PWM

14h 18m

2 stops

$374Delta

Tue, Aug 25 - Sun, Sep 6

3:00 pm - 10:37 pm

PWM

BIL

9h 37m

2 stops

6:15 am - 10:49 am

BIL

PWM

26h 34m

1 stop

$473Delta

Tue, Aug 25 - Tue, Sep 8

4:48 pm - 11:06 pm

PWM

BIL

8h 18m

2 stops

6:27 am - 11:18 pm

BIL

PWM

14h 51m

2 stops

$492Delta

Thu, May 14 - Sun, May 24

American Airlines flights from Portland, Maine to Montana

Our best American Airlines deals on Portland, Maine to Montana flight tickets

American Airlines

Aug 25

PWM6:00 amPortland

11h 50m

2 stops

BZN3:50 pmBozeman Gallatin Field

Sep 1

BZN7:25 amBozeman Gallatin Field

8h 24m

1 stop

PWM5:49 pmPortland

$304

American Airlines

Aug 25

PWM6:00 amPortland

11h 50m

2 stops

BZN3:50 pmBozeman Gallatin Field

Sep 1

BZN7:25 amBozeman Gallatin Field

8h 24m

1 stop

PWM5:49 pmPortland

$324

American Airlines

Aug 25

PWM6:15 amPortland

8h 24m

1 stop

BZN12:39 pmBozeman Gallatin Field

Sep 1

BZN7:25 amBozeman Gallatin Field

8h 24m

1 stop

PWM5:49 pmPortland

$340

Southwest flights from Portland, Maine to Montana

Our best Southwest deals on Portland, Maine to Montana flight tickets

Southwest

Mar 10

PWM5:30 amPortland

18h 25m

2 stops

BZN9:55 pmBozeman Gallatin Field

Mar 17

BZN6:30 amBozeman Gallatin Field

14h 35m

2 stops

PWM11:05 pmPortland

$530

Southwest

Mar 15

PWM5:30 amPortland

11h 25m

2 stops

BZN2:55 pmBozeman Gallatin Field

Mar 19

BZN5:25 amBozeman Gallatin Field

16h 40m

2 stops

PWM12:05 amPortland

$683

Fly from

Fly to

Route

Depart

Return

Price

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 8/25

6:00 am-3:50 pm

2 stops11h 50m

Bozeman Gallatin Field

Tue 9/1

7:25 am-5:49 pm

1 stop8h 24m

$304

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 8/25

6:00 am-3:50 pm

2 stops11h 50m

Bozeman Gallatin Field

Tue 9/1

7:25 am-5:49 pm

1 stop8h 24m

$324

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 8/25

12:00 pm-6:23 pm

1 stop8h 23m

Bozeman Gallatin Field

Tue 9/1

8:30 am-5:44 pm

1 stop7h 14m

$339

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 8/25

6:15 am-12:39 pm

1 stop8h 24m

Bozeman Gallatin Field

Tue 9/1

7:25 am-5:49 pm

1 stop8h 24m

$340

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Thu 4/23

6:04 am-11:29 am

1 stop7h 25m

Bozeman Gallatin Field

Tue 4/28

4:20 pm-10:22 am

2 stops16h 02m

$344

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 8/25

6:00 am-3:22 pm

2 stops11h 22m

Bozeman Gallatin Field

Tue 9/1

10:41 am-11:59 pm

2 stops11h 18m

$349

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Wed 8/19

6:00 am-3:02 pm

2 stops11h 02m

Bozeman Gallatin Field

Mon 8/24

7:25 am-5:49 pm

1 stop8h 24m

$365

PortlandBillings

PWM - BIL

PWMBIL

Portland

Tue 8/25

3:00 pm-10:37 pm

2 stops9h 37m

Billings Logan Intl

Sun 9/6

6:15 am-10:33 pm

2 stops14h 18m

$374

PortlandBillings

PWM - BIL

PWMBIL

Portland

Tue 8/25

3:00 pm-10:37 pm

2 stops9h 37m

Billings Logan Intl

Tue 9/8

6:15 am-10:49 am

1 stop26h 34m

$473

PortlandBillings

PWM - BIL

PWMBIL

Portland

Thu 5/14

4:48 pm-11:06 pm

2 stops8h 18m

Billings Logan Intl

Sun 5/24

6:27 am-11:18 pm

2 stops14h 51m

$492

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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 month to fly to Montana?

The cheapest month to fly to Montana from Portland, Maine is in January. Flight prices, which tend to average around $359, are often lower during this time because this is during the off-season. The month of April is another great option to travel to Montana, with average flight prices from Portland, Maine averaging around $383.

How far in advance should I book a flight to Montana?

You are more likely to see cheaper flights to Montana from Portland, Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to Montana for around $479 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montana from Portland, Maine for as low as $325 on momondo.

Can stopping save me money on Portland, Maine to Montana flights?

You could potentially save up to 19% on your flight if you consider stops on a Portland, Maine to Montana flight.

Cheap Portland, Maine to Montana flight deals and tips

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

Fastest flight time	7h 25m
Direct flights	None

The fastest flight from Portland, Maine to Montana takes 7h 25m

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

Search flight deals

When did momondo last update prices for flights from Portland Airport to Montana?
Prices for flights from Portland Airport to Montana are updated daily.
How many operators does momondo search for flights from Portland Airport to Montana?
There are 3 operators available for flights from Portland Airport to Montana as of March 2026.
How old do you have to be to fly from Portland Airport to Montana?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Montana.
What documentation or ID do you need to fly to Montana?
The required travel and health documents for your Montana trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Montana. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Portland, Maine to Montana

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $248	Free Cancellation	Rating 7.4 9,389 reviews	Search United Airlines flights
Delta	PriceFrom $263	Free Cancellation	Rating 7.9 8,248 reviews	Search Delta flights
American Airlines	PriceFrom $311	Free Cancellation	Rating 7.1 11,381 reviews	Search American Airlines flights

Why use momondo?

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

It is quick and easy to find Portland to Montana flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Montana that suits you.

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

All flight searches from Portland to Montana on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Portland to Montana flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

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