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

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

What airlines fly to Montana?

American Airlines, Delta and JetBlue are the top three most popular airlines that fly to Montana from Portland, Maine according to our data. American Airlines 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 6 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 June 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.

$155 Cheap Flights from Portland, Maine 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.

1:35 pm - 12:10 am

PWM

BZN

12h 35m

2 stops

6:00 am - 10:23 pm

BZN

PWM

14h 23m

2 stops

$319Delta

Thu, Oct 22 - Sun, Oct 25

8:00 am - 3:25 pm

PWM

BZN

9h 25m

1 stop

6:26 am - 6:53 pm

BZN

PWM

10h 27m

1 stop

$334American Airlines

Tue, Aug 25 - Tue, Sep 1

8:00 am - 3:25 pm

PWM

BZN

9h 25m

1 stop

6:26 am - 9:21 pm

BZN

PWM

12h 55m

2 stops

$364American Airlines

Tue, Aug 25 - Tue, Sep 1

12:55 pm - 12:05 am

PWM

BZN

13h 10m

2 stops

6:00 am - 10:23 pm

BZN

PWM

14h 23m

2 stops

$366Delta

Tue, Sep 29 - Tue, Oct 6

6:00 am - 1:16 pm

PWM

BZN

9h 16m

1 stop

6:00 am - 10:23 pm

BZN

PWM

14h 23m

2 stops

$369Delta

Thu, Oct 22 - Sun, Oct 25

8:00 am - 3:25 pm

PWM

BZN

9h 25m

1 stop

6:26 am - 6:53 pm

BZN

PWM

10h 27m

1 stop

$370American Airlines

Tue, Aug 25 - Tue, Sep 1

11:17 am - 8:51 pm

PWM

BIL

11h 34m

2 stops

5:00 am - 3:49 pm

BIL

PWM

8h 49m

1 stop

$454United Airlines

Tue, Oct 27 - Sat, Oct 31

11:17 am - 8:51 pm

PWM

BIL

11h 34m

2 stops

5:00 am - 6:13 pm

BIL

PWM

11h 13m

2 stops

$459United Airlines

Tue, Oct 27 - Sat, Oct 31

3:35 pm - 8:51 pm

PWM

BIL

7h 16m

1 stop

5:51 pm - 8:19 am

BIL

PWM

12h 28m

2 stops

$525United Airlines

Sat, Oct 31 - Tue, Nov 3

6:00 am - 11:46 am

PWM

GTF

7h 46m

1 stop

12:30 pm - 9:41 pm

GTF

PWM

7h 11m

1 stop

$527United Airlines

Sat, Jul 4 - Tue, Jul 14

American Airlines flights from Portland, Maine to Montana

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

American Airlines

Aug 25

PWM8:00 amPortland

9h 25m

1 stop

BZN3:25 pmBozeman Gallatin Field

Sep 1

BZN6:26 amBozeman Gallatin Field

10h 27m

1 stop

PWM6:53 pmPortland

$334

American Airlines

Aug 25

PWM8:00 amPortland

9h 25m

1 stop

BZN3:25 pmBozeman Gallatin Field

Sep 1

BZN6:26 amBozeman Gallatin Field

12h 55m

2 stops

PWM9:21 pmPortland

$364

American Airlines

Aug 25

PWM8:00 amPortland

9h 25m

1 stop

BZN3:25 pmBozeman Gallatin Field

Sep 1

BZN6:26 amBozeman Gallatin Field

10h 27m

1 stop

PWM6:53 pmPortland

$370

United Airlines flights from Portland, Maine to Montana

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

United Airlines

Oct 31

PWM3:35 pmPortland

7h 32m

1 stop

BZN9:07 pmBozeman Gallatin Field

Nov 4

BZN12:30 pmBozeman Gallatin Field

6h 57m

1 stop

PWM9:27 pmPortland

$409

United Airlines

Oct 27

PWM5:30 amPortland

11h 43m

2 stops

BZN3:13 pmBozeman Gallatin Field

Oct 28

BZN12:30 pmBozeman Gallatin Field

6h 57m

1 stop

PWM9:27 pmPortland

$414

United Airlines

Oct 27

PWM11:17 amPortland

11h 50m

2 stops

BZN9:07 pmBozeman Gallatin Field

Oct 28

BZN7:00 amBozeman Gallatin Field

13h 57m

2 stops

PWM10:57 pmPortland

$419

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Thu 10/22

1:35 pm-12:10 am

2 stops12h 35m

Bozeman Gallatin Field

Sun 10/25

6:00 am-10:23 pm

2 stops14h 23m

$319

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 8/25

8:00 am-3:25 pm

1 stop9h 25m

Bozeman Gallatin Field

Tue 9/1

6:26 am-6:53 pm

1 stop10h 27m

$334

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 8/25

8:00 am-3:25 pm

1 stop9h 25m

Bozeman Gallatin Field

Tue 9/1

6:26 am-9:21 pm

2 stops12h 55m

$364

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 9/29

12:55 pm-12:05 am

2 stops13h 10m

Bozeman Gallatin Field

Tue 10/6

6:00 am-10:23 pm

2 stops14h 23m

$366

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Thu 10/22

6:00 am-1:16 pm

1 stop9h 16m

Bozeman Gallatin Field

Sun 10/25

6:00 am-10:23 pm

2 stops14h 23m

$369

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 8/25

8:00 am-3:25 pm

1 stop9h 25m

Bozeman Gallatin Field

Tue 9/1

6:26 am-6:53 pm

1 stop10h 27m

$370

PortlandBillings

PWM - BIL

PWMBIL

Portland

Tue 10/27

11:17 am-8:51 pm

2 stops11h 34m

Billings Logan Intl

Sat 10/31

5:00 am-3:49 pm

1 stop8h 49m

$454

PortlandBillings

PWM - BIL

PWMBIL

Portland

Tue 10/27

11:17 am-8:51 pm

2 stops11h 34m

Billings Logan Intl

Sat 10/31

5:00 am-6:13 pm

2 stops11h 13m

$459

PortlandBillings

PWM - BIL

PWMBIL

Portland

Sat 10/31

3:35 pm-8:51 pm

1 stop7h 16m

Billings Logan Intl

Tue 11/3

5:51 pm-8:19 am

2 stops12h 28m

$525

Quickest round-trip

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

Sat 7/4

6:00 am-11:46 am

1 stop7h 46m

Great Falls

Tue 7/14

12:30 pm-9:41 pm

1 stop7h 11m

$527

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 $203, are often lower during this time because this is during the off-season. The month of August is another great option to travel to Montana, with average flight prices from Portland, Maine averaging around $225.

How far in advance should I book a flight from Portland, Maine 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 $471 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 $326 on momondo.

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

You could potentially save up to 38% 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	6h 54m
Direct flights	None

The fastest flight from Portland, Maine to Montana takes 6h 54m

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

Search flight deals

Frequently asked questions about flying from Portland, Maine to Montana

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 June 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
Delta	PriceFrom $203	Free Cancellation	Rating 7.8 8,395 reviews	Search Delta flights
United Airlines	PriceFrom $308	Free Cancellation	Rating 7.4 9,775 reviews	Search United Airlines flights
American Airlines	PriceFrom $311	Free Cancellation	Rating 7.1 11,644 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.