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

United Airlines, American Airlines, and Delta 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 April 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.

$160 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.

8:00 am - 3:25 pm

PWM

BZN

9h 25m

1 stop

6:26 am - 6:53 pm

BZN

PWM

10h 27m

1 stop

$309American Airlines

Wed, Aug 26 - Tue, Sep 1

1:35 pm - 11:59 pm

PWM

BZN

12h 24m

2 stops

12:20 pm - 10:33 pm

BZN

PWM

8h 13m

1 stop

$314Delta

Tue, Aug 25 - Tue, Sep 1

9:29 am - 8:44 pm

PWM

BZN

13h 15m

2 stops

6:44 am - 4:46 pm

BZN

PWM

8h 02m

1 stop

$339American Airlines

Wed, May 27 - Sat, May 30

6:00 am - 3:25 pm

PWM

BZN

11h 25m

2 stops

11:55 am - 11:51 pm

BZN

PWM

9h 56m

2 stops

$344American Airlines

Wed, Aug 26 - Tue, Sep 1

4:50 pm - 10:39 pm

PWM

BZN

7h 49m

1 stop

12:35 pm - 9:19 pm

BZN

PWM

6h 44m

1 stop

$359United Airlines

Sun, May 3 - Wed, May 6

4:50 pm - 10:39 pm

PWM

BZN

7h 49m

1 stop

12:35 pm - 11:59 pm

BZN

PWM

9h 24m

2 stops

$364United Airlines

Sun, May 3 - Wed, May 6

6:00 am - 3:50 pm

PWM

BZN

11h 50m

2 stops

11:55 am - 11:51 pm

BZN

PWM

9h 56m

2 stops

$370American Airlines

Tue, Aug 25 - Tue, Sep 1

4:03 pm - 10:22 pm

PWM

BIL

8h 19m

1 stop

12:17 pm - 11:41 pm

BIL

PWM

9h 24m

2 stops

$379American Airlines

Sat, Sep 19 - Sat, Sep 26

6:00 am - 11:34 am

PWM

MSO

7h 34m

1 stop

12:40 pm - 10:01 pm

MSO

PWM

7h 21m

1 stop

$389United Airlines

Thu, Aug 20 - Mon, Aug 24

3:00 pm - 11:47 pm

PWM

MSO

10h 47m

2 stops

6:10 pm - 1:54 pm

MSO

PWM

17h 44m

2 stops

$446Delta

Sat, Sep 5 - Tue, Sep 15

American Airlines flights from Portland, Maine to Montana

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

American Airlines

Aug 26

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

$309

American Airlines

May 27

PWM9:29 amPortland

13h 15m

2 stops

BZN8:44 pmBozeman Gallatin Field

May 30

BZN6:44 amBozeman Gallatin Field

8h 02m

1 stop

PWM4:46 pmPortland

$339

American Airlines

Aug 26

PWM6:00 amPortland

11h 25m

2 stops

BZN3:25 pmBozeman Gallatin Field

Sep 1

BZN11:55 amBozeman Gallatin Field

9h 56m

2 stops

PWM11:51 pmPortland

$344

Delta flights from Portland, Maine to Montana

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

Delta

Aug 25

PWM1:35 pmPortland

12h 24m

2 stops

BZN11:59 pmBozeman Gallatin Field

Sep 1

BZN12:20 pmBozeman Gallatin Field

8h 13m

1 stop

PWM10:33 pmPortland

$314

Delta

Sep 5

PWM3:00 pmPortland

10h 47m

2 stops

MSO11:47 pmMissoula Johnson-Bell Field

Sep 15

MSO6:10 pmMissoula Johnson-Bell Field

17h 44m

2 stops

PWM1:54 pmPortland

$446

Delta

Aug 18

PWM4:50 pmPortland

9h 09m

2 stops

BZN11:59 pmBozeman Gallatin Field

Aug 25

BZN12:20 pmBozeman Gallatin Field

8h 13m

1 stop

PWM10:33 pmPortland

$449

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Wed 8/26

8:00 am-3:25 pm

1 stop9h 25m

Bozeman Gallatin Field

Tue 9/1

6:26 am-6:53 pm

1 stop10h 27m

$309

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 8/25

1:35 pm-11:59 pm

2 stops12h 24m

Bozeman Gallatin Field

Tue 9/1

12:20 pm-10:33 pm

1 stop8h 13m

$314

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Wed 5/27

9:29 am-8:44 pm

2 stops13h 15m

Bozeman Gallatin Field

Sat 5/30

6:44 am-4:46 pm

1 stop8h 02m

$339

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Wed 8/26

6:00 am-3:25 pm

2 stops11h 25m

Bozeman Gallatin Field

Tue 9/1

11:55 am-11:51 pm

2 stops9h 56m

$344

Quickest round-trip

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Sun 5/3

4:50 pm-10:39 pm

1 stop7h 49m

Bozeman Gallatin Field

Wed 5/6

12:35 pm-9:19 pm

1 stop6h 44m

$359

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Sun 5/3

4:50 pm-10:39 pm

1 stop7h 49m

Bozeman Gallatin Field

Wed 5/6

12:35 pm-11:59 pm

2 stops9h 24m

$364

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 8/25

6:00 am-3:50 pm

2 stops11h 50m

Bozeman Gallatin Field

Tue 9/1

11:55 am-11:51 pm

2 stops9h 56m

$370

PortlandBillings

PWM - BIL

PWMBIL

Portland

Sat 9/19

4:03 pm-10:22 pm

1 stop8h 19m

Billings Logan Intl

Sat 9/26

12:17 pm-11:41 pm

2 stops9h 24m

$379

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Thu 8/20

6:00 am-11:34 am

1 stop7h 34m

Missoula Johnson-Bell Field

Mon 8/24

12:40 pm-10:01 pm

1 stop7h 21m

$389

PortlandMissoula

PWM - MSO

PWMMSO

Portland

Sat 9/5

3:00 pm-11:47 pm

2 stops10h 47m

Missoula Johnson-Bell Field

Tue 9/15

6:10 pm-1:54 pm

2 stops17h 44m

$446

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 November. Flight prices, which tend to average around $249, are often lower during this time because this is during the off-season. The month of January is another great option to travel to Montana, with average flight prices from Portland, Maine averaging around $359.

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 $480 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 $416 on momondo.

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

You could potentially save up to 33% 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

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 April 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 7.9 8,434 reviews	Search Delta flights
United Airlines	PriceFrom $308	Free Cancellation	Rating 7.4 9,613 reviews	Search United Airlines flights
American Airlines	PriceFrom $311	Free Cancellation	Rating 7.1 11,645 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.