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

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

What airlines fly to Portland, Maine?

United Airlines, Delta and JetBlue are the top three most popular airlines that fly to Portland, Maine from Montana according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Portland, Maine. Keep in mind that there are 6 different airlines that fly to Portland, Maine on a routine basis, so you have a few additional options to choose from.

How many flights depart from Montana to Portland, Maine on average per week?

7 flights are operational weekly from Montana to Portland, Maine as of August 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

How long does it take to fly to Portland, Maine?

The flight from Montana to Portland, Maine depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Bozeman (a popular airport in Montana) to Boston (the most popular airport in Portland, Maine), then the flight time is 4h 25m on average. If you fly from Missoula (another popular airport in Montana) to Boston, then the average flight time is 6h 22m.

When did momondo last update prices for flights from Montana to Portland Airport?

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

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

There are 2 operators available for flights from Montana to Portland Airport as of August 2026.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Montana to Portland Airport.

What documentation or ID do you need to fly to Portland Airport?

The necessary travel and health documents for your Portland Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$204 Cheap Flights from Montana to Portland, Maine in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montana to Portland

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 4:02 pmBIL Billings Logan Intl-PWM Portland

7h 02m1 stop Denver Intl

3:23 pm - 10:30 pmPWM Portland-BIL Billings Logan Intl

9h 07m1 stop Denver Intl

$354United Airlines

Sat, Oct 24 - Wed, Oct 28

7:00 am - 4:02 pmBIL Billings Logan Intl-PWM Portland

7h 02m1 stop Denver Intl

8:47 am - 9:14 pmPWM Portland-BIL Billings Logan Intl

14h 27m2 stops Chicago O'Hare Intl Denver Intl

$360United Airlines

Sat, Oct 24 - Wed, Oct 28

1:58 pm - 11:40 pmFCA Kalispell Glacier Park-PWM Portland

7h 42m1 stop Chicago O'Hare Intl

7:00 am - 1:27 pmPWM Portland-FCA Kalispell Glacier Park

8h 27m1 stop Chicago O'Hare Intl

$379American Airlines

Tue, Oct 20 - Tue, Oct 27

7:00 am - 11:32 pmMSO Missoula Johnson-Bell Field-PWM Portland

14h 32m2 stops Los Angeles Newark

6:00 am - 11:24 amPWM Portland-MSO Missoula Johnson-Bell Field

7h 24m1 stop Chicago O'Hare Intl

$384United Airlines

Tue, Sep 22 - Tue, Sep 29

7:00 am - 3:51 pmBIL Billings Logan Intl-PWM Portland

6h 51m1 stop Denver Intl

9:49 am - 9:00 pmPWM Portland-BIL Billings Logan Intl

13h 11m2 stops Washington, D.C. Dulles Intl Denver Intl

$395United Airlines

Sat, Aug 29 - Tue, Sep 1

6:30 am - 10:35 pmBZN Bozeman Gallatin Field-PWM Portland

14h 05m2 stops Las Vegas Harry Reid Intl Baltimore/Washington

11:35 am - 10:05 pmPWM Portland-BZN Bozeman Gallatin Field

12h 30m2 stops Nashville Intl Denver Intl

$425Southwest

Tue, Oct 13 - Tue, Oct 27

6:30 am - 6:50 pmBZN Bozeman Gallatin Field-PWM Portland

10h 20m1 stop Dallas/Fort Worth

6:00 am - 3:26 pmPWM Portland-BZN Bozeman Gallatin Field

11h 26m2 stops Washington, D.C. Reagan-National Dallas/Fort Worth

$431American Airlines

Fri, Sep 25 - Tue, Sep 29

6:01 am - 9:01 pmBIL Billings Logan Intl-PWM Portland

13h 00m2 stops Minneapolis St Paul New York LaGuardia

6:01 am - 5:49 pmPWM Portland-BIL Billings Logan Intl

13h 48m2 stops Atlanta Hartsfield-Jackson Salt Lake City

$439Delta

Sat, Oct 24 - Tue, Oct 27

1:48 pm - 11:40 pmMSO Missoula Johnson-Bell Field-PWM Portland

7h 52m1 stop Chicago O'Hare Intl

12:48 pm - 12:40 pmPWM Portland-MSO Missoula Johnson-Bell Field

25h 52m1 stop Chicago O'Hare Intl

$444American Airlines

Fri, Oct 30 - Wed, Nov 4

7:15 pm - 10:30 amBZN Bozeman Gallatin Field-PWM Portland

13h 15m2 stops Las Vegas Harry Reid Intl Baltimore/Washington

12:45 pm - 10:25 pmPWM Portland-BZN Bozeman Gallatin Field

11h 40m2 stops Baltimore/Washington Denver Intl

$471Southwest

Sat, Nov 21 - Tue, Dec 1

Cheap last minute flights

Enter your travel dates to find the best prices.

6:55 am - 9:10 pmBZN Bozeman Gallatin Field-PWM Portland

12h 15m2 stops Las Vegas Harry Reid Intl Baltimore/Washington

1:05 pm - 10:25 pmPWM Portland-BZN Bozeman Gallatin Field

11h 20m2 stops Baltimore/Washington Denver Intl

$545Southwest

Wed, Aug 19 - Tue, Aug 25

10:25 am - 7:17 pmBZN Bozeman Gallatin Field-PWM Portland

6h 52m1 stop Washington, D.C. Dulles Intl

5:15 am - 10:42 amPWM Portland-BZN Bozeman Gallatin Field

7h 27m1 stop Washington, D.C. Dulles Intl

$555United Airlines

Sat, Aug 15 - Sat, Aug 22

1:41 pm - 11:32 pmBZN Bozeman Gallatin Field-PWM Portland

7h 51m1 stop Newark

6:00 am - 11:40 amPWM Portland-BZN Bozeman Gallatin Field

7h 40m1 stop Chicago O'Hare Intl

$555United Airlines

Wed, Aug 19 - Tue, Aug 25

12:06 pm - 11:13 pmBZN Bozeman Gallatin Field-PWM Portland

9h 07m1 stop Atlanta Hartsfield-Jackson

2:53 pm - 12:04 amPWM Portland-BZN Bozeman Gallatin Field

11h 11m2 stops New York John F Kennedy Intl Salt Lake City

$560Delta

Sun, Aug 16 - Fri, Aug 28

12:06 pm - 11:13 pmBZN Bozeman Gallatin Field-PWM Portland

9h 07m1 stop Atlanta Hartsfield-Jackson

2:53 pm - 12:04 amPWM Portland-BZN Bozeman Gallatin Field

11h 11m2 stops New York John F Kennedy Intl Salt Lake City

$560Delta

Sun, Aug 16 - Thu, Aug 27

10:25 am - 7:17 pmBZN Bozeman Gallatin Field-PWM Portland

6h 52m1 stop Washington, D.C. Dulles Intl

5:15 am - 3:23 pmPWM Portland-BZN Bozeman Gallatin Field

12h 08m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl

$560United Airlines

Sat, Aug 15 - Sat, Aug 22

12:06 pm - 11:13 pmBZN Bozeman Gallatin Field-PWM Portland

9h 07m1 stop Atlanta Hartsfield-Jackson

4:47 pm - 12:04 amPWM Portland-BZN Bozeman Gallatin Field

9h 17m2 stops Detroit Metropolitan Wayne County Salt Lake City

$560Delta

Sun, Aug 16 - Fri, Aug 21

6:26 am - 10:00 pmBZN Bozeman Gallatin Field-PWM Portland

13h 34m2 stops Dallas/Fort Worth Charlotte Douglas

7:28 am - 8:37 pmPWM Portland-BZN Bozeman Gallatin Field

15h 09m2 stops Philadelphia Dallas/Fort Worth

$613American Airlines

Sat, Aug 15 - Sat, Aug 22

11:55 am - 11:47 pmBZN Bozeman Gallatin Field-PWM Portland

9h 52m2 stops Dallas/Fort Worth Washington, D.C. Reagan-National

5:30 am - 3:25 pmPWM Portland-BZN Bozeman Gallatin Field

11h 55m2 stops Philadelphia Dallas/Fort Worth

$675American Airlines

Wed, Aug 19 - Sun, Aug 23

6:26 am - 10:00 pmBZN Bozeman Gallatin Field-PWM Portland

13h 34m2 stops Dallas/Fort Worth Charlotte Douglas

7:28 am - 8:37 pmPWM Portland-BZN Bozeman Gallatin Field

15h 09m2 stops Philadelphia Dallas/Fort Worth

$696American Airlines

Tue, Aug 18 - Wed, Aug 26

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United Airlines flights from Montana to Portland, Maine

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

United Airlines

Oct 24

BIL7:00 amBillings Logan Intl

7h 02m

1 stop

PWM4:02 pmPortland

Oct 28

PWM3:23 pmPortland

9h 07m

1 stop

BIL10:30 pmBillings Logan Intl

$354

United Airlines

Oct 24

BIL7:00 amBillings Logan Intl

7h 02m

1 stop

PWM4:02 pmPortland

Oct 28

PWM8:47 amPortland

14h 27m

2 stops

BIL9:14 pmBillings Logan Intl

$360

United Airlines

Sep 22

MSO7:00 amMissoula Johnson-Bell Field

14h 32m

2 stops

PWM11:32 pmPortland

Sep 29

PWM6:00 amPortland

7h 24m

1 stop

MSO11:24 amMissoula Johnson-Bell Field

$384

Southwest flights from Montana to Portland, Maine

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

Southwest

Oct 13

BZN6:30 amBozeman Gallatin Field

14h 05m

2 stops

PWM10:35 pmPortland

Oct 27

PWM11:35 amPortland

12h 30m

2 stops

BZN10:05 pmBozeman Gallatin Field

$425

Southwest

Oct 9

BZN6:15 pmBozeman Gallatin Field

13h 30m

2 stops

PWM9:45 amPortland

Oct 11

PWM7:25 amPortland

12h 10m

2 stops

BZN5:35 pmBozeman Gallatin Field

$539

Southwest

Oct 6

BZN6:30 amBozeman Gallatin Field

14h 05m

2 stops

PWM10:35 pmPortland

Oct 11

PWM7:25 amPortland

12h 10m

2 stops

BZN5:35 pmBozeman Gallatin Field

$545

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

BillingsPortland

BIL Billings Logan Intl - PWM Portland

BILPWM

Billings Logan Intl

Sat 10/24

7:00 am-4:02 pm

1 stop7h 02m

Portland

Wed 10/28

3:23 pm-10:30 pm

1 stop9h 07m

$354

BillingsPortland

BIL Billings Logan Intl - PWM Portland

BILPWM

Billings Logan Intl

Sat 10/24

7:00 am-4:02 pm

1 stop7h 02m

Portland

Wed 10/28

8:47 am-9:14 pm

2 stops14h 27m

$360

KalispellPortland

FCA Kalispell Glacier Park - PWM Portland

FCAPWM

Kalispell Glacier Park

Tue 10/20

1:58 pm-11:40 pm

1 stop7h 42m

Portland

Tue 10/27

7:00 am-1:27 pm

1 stop8h 27m

$379

MissoulaPortland

MSO Missoula Johnson-Bell Field - PWM Portland

MSOPWM

Missoula Johnson-Bell Field

Tue 9/22

7:00 am-11:32 pm

2 stops14h 32m

Portland

Tue 9/29

6:00 am-11:24 am

1 stop7h 24m

$384

BillingsPortland

BIL Billings Logan Intl - PWM Portland

BILPWM

Billings Logan Intl

Sat 8/29

7:00 am-3:51 pm

1 stop6h 51m

Portland

Tue 9/1

9:49 am-9:00 pm

2 stops13h 11m

$395

BozemanPortland

BZN Bozeman Gallatin Field - PWM Portland

BZNPWM

Bozeman Gallatin Field

Tue 10/13

6:30 am-10:35 pm

2 stops14h 05m

Portland

Tue 10/27

11:35 am-10:05 pm

2 stops12h 30m

$425

BozemanPortland

BZN Bozeman Gallatin Field - PWM Portland

BZNPWM

Bozeman Gallatin Field

Fri 9/25

6:30 am-6:50 pm

1 stop10h 20m

Portland

Tue 9/29

6:00 am-3:26 pm

2 stops11h 26m

$431

BillingsPortland

BIL Billings Logan Intl - PWM Portland

BILPWM

Billings Logan Intl

Sat 10/24

6:01 am-9:01 pm

2 stops13h 00m

Portland

Tue 10/27

6:01 am-5:49 pm

2 stops13h 48m

$439

MissoulaPortland

MSO Missoula Johnson-Bell Field - PWM Portland

MSOPWM

Missoula Johnson-Bell Field

Fri 10/30

1:48 pm-11:40 pm

1 stop7h 52m

Portland

Wed 11/4

12:48 pm-12:40 pm

1 stop25h 52m

$444

BozemanPortland

BZN Bozeman Gallatin Field - PWM Portland

BZNPWM

Bozeman Gallatin Field

Sat 11/21

7:15 pm-10:30 am

2 stops13h 15m

Portland

Tue 12/1

12:45 pm-10:25 pm

2 stops11h 40m

$471

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 Montana to Portland, Maine

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

Other information

What is the cheapest month to fly to Portland, Maine?

The cheapest month to fly to Portland, Maine from Montana is in January. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland, Maine during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $389.

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

You could potentially save up to 17% on your flight if you consider stops on a Montana to Portland, Maine flight.

Cheap Montana to Portland, Maine flight deals and tips

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

Fastest flight time	6h 50m
Direct flights	None

The fastest flight from Montana to Portland, Maine takes 6h 50m

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

Search flight deals

Frequently asked questions about flying from Montana to Portland, Maine

When did momondo last update prices for flights from Montana to Portland Airport?
Prices for flights from Montana to Portland Airport are updated daily.
How many operators does momondo search for flights from Montana to Portland Airport?
There are 2 operators available for flights from Montana to Portland Airport as of August 2026.
How old do you have to be to fly from Montana to Portland Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Montana to Portland Airport.
What documentation or ID do you need to fly to Portland Airport?
The necessary travel and health documents for your Portland Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Montana to Portland, Maine

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $308	Free Cancellation	Rating 7.4 10,108 reviews		Search United Airlines flights
American Airlines	PriceFrom $400	Free Cancellation	Rating 7.1 11,929 reviews		Search American Airlines flights

North Conway

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Jackson

Lewiston

Brunswick

Freeport

Gorham

Auburn

Bartlett

Conway

Windham

Bath

Intervale

Oxford

Georgetown

Falmouth

Tamworth

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Montana to Portland. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Portland from Montana on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between Montana and Portland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Montana to Portland now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Portland and let you know when they change.

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Cheap flights from Montana to Portland from $204

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to Portland departing on 10/10. 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 Montana to Portland, Maine

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

Southwest flights from Montana to Portland, Maine

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

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

What is the cheapest month to fly to Portland, Maine?

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

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

What airlines fly to Portland, Maine?

How many flights depart from Montana to Portland, Maine on average per week?

How long does it take to fly to Portland, Maine?

Cheap Montana to Portland, Maine flight deals and tips

Fastest flight time

Direct flights

Frequently asked questions about flying from Montana to Portland, Maine

Best airlines flying from Montana to Portland, Maine

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

Traveling to a place near Portland?

Why use momondo?

An easier way to manage your Portland, Maine 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 Maine

Fly your favorite airline to Portland

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Portland

List of cabin classes available on flights landing in Portland. Availability may vary depending on flight origin and airline.

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