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Cheap flights from Portland, Maine to Montana from $343

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 Montana departing on 1/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portland, Maine to Montana

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
4:10 pm - 10:29 pm
PWM
-
BZN
8h 19m1 stop
United Airlines Logo
12:05 pm - 11:30 pm
BZN
-
PWM
9h 25m1 stop
$343United Airlines
Mon, Jan 5 - Mon, Jan 12
United Airlines Logo
6:00 am - 3:34 pm
PWM
-
BZN
11h 34m2 stops
United Airlines Logo
6:20 am - 10:58 pm
BZN
-
PWM
14h 38m2 stops
$363United Airlines
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
4:23 pm - 10:11 pm
PWM
-
BZN
7h 48m1 stop
United Airlines Logo
8:10 am - 10:58 pm
BZN
-
PWM
12h 48m2 stops
$394United Airlines
Tue, Mar 24 - Tue, Mar 31
American Airlines Logo
5:38 pm - 12:34 pm
PWM
-
BZN
20h 56m1 stop
American Airlines Logo
1:36 pm - 4:54 pm
BZN
-
PWM
25h 18m1 stop
$397American Airlines
Tue, Mar 24 - Tue, Mar 31
United Airlines Logo
11:30 am - 10:11 pm
PWM
-
BZN
12h 41m2 stops
United Airlines Logo
8:10 am - 10:58 pm
BZN
-
PWM
12h 48m2 stops
$399United Airlines
Tue, Mar 24 - Tue, Mar 31
United Airlines Logo
6:00 am - 3:10 pm
PWM
-
BZN
11h 10m2 stops
United Airlines Logo
10:50 am - 11:30 pm
BZN
-
PWM
10h 40m2 stops
$414United Airlines
Mon, Jan 5 - Mon, Jan 12
American Airlines Logo
5:31 am - 8:21 pm
PWM
-
BZN
16h 50m2 stops
American Airlines Logo
7:00 am - 4:54 pm
BZN
-
PWM
7h 54m1 stop
$418American Airlines
Sat, Mar 7 - Tue, Mar 17
United Airlines Logo
9:37 am - 9:07 pm
PWM
-
BZN
13h 30m2 stops
United Airlines Logo
7:00 am - 3:35 pm
BZN
-
PWM
6h 35m1 stop
$446United Airlines
Tue, May 12 - Mon, May 18
Delta Logo
12:50 pm - 11:53 pm
PWM
-
BZN
13h 03m2 stops
Delta Logo
2:15 pm - 11:59 pm
BZN
-
PWM
7h 44m1 stop
$452Delta
Mon, Jun 8 - Sat, Jun 13
Southwest Logo
5:35 am - 10:40 pm
PWM
-
BZN
19h 05m2 stops
Southwest Logo
11:00 am - 10:45 pm
BZN
-
PWM
9h 45m2 stops
$460Southwest
Mon, Feb 23 - Mon, Mar 2

American Airlines flights from Portland, Maine to Montana

Our best American Airlines deals on Portland, Maine to Montana flight tickets
American Airlines
Mar 24
PWM5:38 pmPortland
20h 56m
1 stop
BZN12:34 pmBozeman Gallatin Field
Mar 31
BZN1:36 pmBozeman Gallatin Field
25h 18m
1 stop
PWM4:54 pmPortland
$397
Find similar
American Airlines
Mar 7
PWM5:31 amPortland
16h 50m
2 stops
BZN8:21 pmBozeman Gallatin Field
Mar 17
BZN7:00 amBozeman Gallatin Field
7h 54m
1 stop
PWM4:54 pmPortland
$418
Find similar
American Airlines
Feb 19
PWM12:17 pmPortland
10h 04m
2 stops
BZN8:21 pmBozeman Gallatin Field
Feb 24
BZN1:34 pmBozeman Gallatin Field
20h 13m
2 stops
PWM11:47 amPortland
$484
Find similar

United Airlines flights from Portland, Maine to Montana

Our best United Airlines deals on Portland, Maine to Montana flight tickets
United Airlines
Jan 5
PWM4:10 pmPortland
8h 19m
1 stop
BZN10:29 pmBozeman Gallatin Field
Jan 12
BZN12:05 pmBozeman Gallatin Field
9h 25m
1 stop
PWM11:30 pmPortland
$343
Find similar
United Airlines
Apr 7
PWM8:58 amPortland
14h 19m
2 stops
BZN9:17 pmBozeman Gallatin Field
Apr 21
BZN6:20 amBozeman Gallatin Field
14h 38m
2 stops
PWM10:58 pmPortland
$363
Find similar
United Airlines
Mar 24
PWM4:23 pmPortland
7h 48m
1 stop
BZN10:11 pmBozeman Gallatin Field
Mar 31
BZN8:10 amBozeman Gallatin Field
12h 48m
2 stops
PWM10:58 pmPortland
$394
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine to Montana that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 15, 2025.
Use the filters below to find and compare flights from Portland, Maine to Montana that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Mon 1/5

4:10 pm-10:29 pm

1 stop8h 19m

Bozeman Gallatin Field

Mon 1/12

12:05 pm-11:30 pm

1 stop9h 25m

$343

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 4/14

6:00 am-3:34 pm

2 stops11h 34m

Bozeman Gallatin Field

Tue 4/21

6:20 am-10:58 pm

2 stops14h 38m

$363

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 3/24

4:23 pm-10:11 pm

1 stop7h 48m

Bozeman Gallatin Field

Tue 3/31

8:10 am-10:58 pm

2 stops12h 48m

$394

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 3/24

5:38 pm-12:34 pm

1 stop20h 56m

Bozeman Gallatin Field

Tue 3/31

1:36 pm-4:54 pm

1 stop25h 18m

$397

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 3/24

11:30 am-10:11 pm

2 stops12h 41m

Bozeman Gallatin Field

Tue 3/31

8:10 am-10:58 pm

2 stops12h 48m

$399

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Mon 1/5

6:00 am-3:10 pm

2 stops11h 10m

Bozeman Gallatin Field

Mon 1/12

10:50 am-11:30 pm

2 stops10h 40m

$414

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Sat 3/7

5:31 am-8:21 pm

2 stops16h 50m

Bozeman Gallatin Field

Tue 3/17

7:00 am-4:54 pm

1 stop7h 54m

$418

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Tue 5/12

9:37 am-9:07 pm

2 stops13h 30m

Bozeman Gallatin Field

Mon 5/18

7:00 am-3:35 pm

1 stop6h 35m

$446

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Mon 6/8

12:50 pm-11:53 pm

2 stops13h 03m

Bozeman Gallatin Field

Sat 6/13

2:15 pm-11:59 pm

1 stop7h 44m

$452

PortlandBozeman

PWM - BZN

PWMBZN

Portland

Mon 2/23

5:35 am-10:40 pm

2 stops19h 05m

Bozeman Gallatin Field

Mon 3/2

11:00 am-10:45 pm

2 stops9h 45m

$460

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Montana from

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

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

Our data shows that Tuesday is the least expensive day to fly to Montana. Tickets to fly out on this day can be as low as $613. The most expensive day to fly to Montana is Sunday, with ticket prices averaging around $752.

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

The cheapest time of day to fly to Montana is in the morning when flights can be purchased for as low as $635. In the afternoon is when there is more demand to fly to Montana, so prices are often more expensive at around $765 per ticket.

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 $556 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 $449 on momondo.

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

You could potentially save up to 22% 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 48m

Direct flights

None
The fastest flight from Portland, Maine to Montana takes 7h 48m
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?

  • 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
DeltaPriceFrom $263Free CancellationRating
7.9
8,008 reviews
Search Delta flights
United AirlinesPriceFrom $308Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
American AirlinesPriceFrom $311Free CancellationRating
7.2
11,051 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.

An easier way to manage your Montana 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.
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