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Cheap flights from Montana to Portland from $181

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 9/5. 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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Cheap round-trip flights

American Airlines Logo
12:20 pm - 10:45 pmBIL-PWM
8h 25m1 stop
American Airlines Logo
6:14 am - 11:50 amPWM-BIL
7h 36m1 stop
$289American Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27
American Airlines Logo
12:20 pm - 11:51 pmBIL-PWM
9h 31m2 stops
American Airlines Logo
6:14 am - 11:50 amPWM-BIL
7h 36m1 stop
$294American Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27
United Airlines Logo
7:00 am - 7:29 pmBIL-PWM
10h 29m2 stops
United Airlines Logo
6:14 am - 11:16 amPWM-BIL
7h 02m1 stop
$319United Airlines
Find Deal
Wed, Aug 20 - Wed, Aug 27
Southwest Logo
5:45 pm - 9:50 amBZN-PWM
14h 05m2 stops
Southwest Logo
9:05 am - 6:40 pmPWM-BZN
11h 35m2 stops
$347Southwest
Find Deal
Tue, Sep 16 - Tue, Sep 23
United Airlines Logo
7:00 am - 7:29 pmBIL-PWM
10h 29m2 stops
United Airlines Logo
6:14 am - 1:17 pmPWM-BIL
9h 03m2 stops
$348United Airlines
Find Deal
Wed, Aug 20 - Wed, Aug 27
American Airlines Logo
1:14 pm - 11:28 amFCA-PWM
20h 14m1 stop
American Airlines Logo
6:14 am - 12:43 pmPWM-FCA
8h 29m1 stop
$368American Airlines
Find Deal
Fri, Oct 17 - Wed, Oct 22
Delta Logo
8:00 am - 11:07 pmMSO-PWM
13h 07m2 stops
Delta Logo
12:45 pm - 11:13 pmPWM-MSO
12h 28m2 stops
$375Delta
Find Deal
Tue, Oct 28 - Sat, Nov 1
American Airlines Logo
12:20 pm - 10:45 pmBIL-PWM
8h 25m1 stop
American Airlines Logo
6:14 am - 11:50 amPWM-BIL
7h 36m1 stop
$379American Airlines
Find Deal
Wed, Oct 22 - Mon, Oct 27
Southwest Logo
6:25 am - 11:20 pmBZN-PWM
14h 55m2 stops
Southwest Logo
3:30 pm - 11:35 pmPWM-BZN
10h 05m2 stops
$400Southwest
Find Deal
Fri, Sep 5 - Mon, Sep 8
Delta Logo
6:25 am - 11:09 pmBIL-PWM
14h 44m2 stops
Delta Logo
4:48 pm - 11:18 pmPWM-BIL
8h 30m2 stops
$506Delta
Find Deal
Wed, Oct 22 - Mon, Oct 27

Southwest flights from Montana to Portland, Maine

Our best Southwest deals on Montana to Portland, Maine flight tickets
Southwest
Sep 16
BZN5:45 pmBozeman Gallatin Field
14h 05m
2 stops
PWM9:50 amPortland
Sep 23
PWM9:05 amPortland
11h 35m
2 stops
BZN6:40 pmBozeman Gallatin Field
$347
Find similar
Southwest
Sep 5
BZN6:25 amBozeman Gallatin Field
14h 55m
2 stops
PWM11:20 pmPortland
Sep 8
PWM3:30 pmPortland
10h 05m
2 stops
BZN11:35 pmBozeman Gallatin Field
$400
Find similar
Southwest
Aug 15
BZN6:25 amBozeman Gallatin Field
14h 55m
2 stops
PWM11:20 pmPortland
Aug 19
PWM10:30 amPortland
14h 25m
2 stops
BZN10:55 pmBozeman Gallatin Field
$571
Find similar

American Airlines flights from Montana to Portland, Maine

Our best American Airlines deals on Montana to Portland, Maine flight tickets
American Airlines
Oct 23
BIL12:20 pmBillings Logan Intl
8h 25m
1 stop
PWM10:45 pmPortland
Oct 27
PWM6:14 amPortland
7h 36m
1 stop
BIL11:50 amBillings Logan Intl
$289
Find similar
American Airlines
Oct 23
BIL12:20 pmBillings Logan Intl
9h 31m
2 stops
PWM11:51 pmPortland
Oct 27
PWM6:14 amPortland
7h 36m
1 stop
BIL11:50 amBillings Logan Intl
$294
Find similar
American Airlines
Oct 17
FCA1:14 pmKalispell Glacier Park
20h 14m
1 stop
PWM11:28 amPortland
Oct 22
PWM6:14 amPortland
8h 29m
1 stop
FCA12:43 pmKalispell Glacier Park
$368
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Montana to Portland, Maine 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 August 7, 2025.
Use the filters below to find and compare flights from Montana to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BillingsPortland

BIL - PWM

BILPWM

Billings Logan Intl

Thu 10/23

12:20 pm-10:45 pm

1 stop8h 25m

Portland

Mon 10/27

6:14 am-11:50 am

1 stop7h 36m

$289

BillingsPortland

BIL - PWM

BILPWM

Billings Logan Intl

Thu 10/23

12:20 pm-11:51 pm

2 stops9h 31m

Portland

Mon 10/27

6:14 am-11:50 am

1 stop7h 36m

$294

BillingsPortland

BIL - PWM

BILPWM

Billings Logan Intl

Wed 8/20

7:00 am-7:29 pm

2 stops10h 29m

Portland

Wed 8/27

6:14 am-11:16 am

1 stop7h 02m

$319

BozemanPortland

BZN - PWM

BZNPWM

Bozeman Gallatin Field

Tue 9/16

5:45 pm-9:50 am

2 stops14h 05m

Portland

Tue 9/23

9:05 am-6:40 pm

2 stops11h 35m

$347

BillingsPortland

BIL - PWM

BILPWM

Billings Logan Intl

Wed 8/20

7:00 am-7:29 pm

2 stops10h 29m

Portland

Wed 8/27

6:14 am-1:17 pm

2 stops9h 03m

$348

KalispellPortland

FCA - PWM

FCAPWM

Kalispell Glacier Park

Fri 10/17

1:14 pm-11:28 am

1 stop20h 14m

Portland

Wed 10/22

6:14 am-12:43 pm

1 stop8h 29m

$368

MissoulaPortland

MSO - PWM

MSOPWM

Missoula Johnson-Bell Field

Tue 10/28

8:00 am-11:07 pm

2 stops13h 07m

Portland

Sat 11/1

12:45 pm-11:13 pm

2 stops12h 28m

$375

BillingsPortland

BIL - PWM

BILPWM

Billings Logan Intl

Wed 10/22

12:20 pm-10:45 pm

1 stop8h 25m

Portland

Mon 10/27

6:14 am-11:50 am

1 stop7h 36m

$379

BozemanPortland

BZN - PWM

BZNPWM

Bozeman Gallatin Field

Fri 9/5

6:25 am-11:20 pm

2 stops14h 55m

Portland

Mon 9/8

3:30 pm-11:35 pm

2 stops10h 05m

$400

BillingsPortland

BIL - PWM

BILPWM

Billings Logan Intl

Wed 10/22

6:25 am-11:09 pm

2 stops14h 44m

Portland

Mon 10/27

4:48 pm-11:18 pm

2 stops8h 30m

$506

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portland from

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

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

The cheapest month to fly to Portland, Maine from Montana is in May. Flight prices, which tend to average around $485, 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 May, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $496.

What is the cheapest day to depart on your flight to Portland, Maine?

On average, the least expensive day to fly to Portland, Maine from Montana is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $619. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Montana because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $851.

What is the cheapest time of day to depart on your flight to Portland, Maine?

At noon is the cheapest time of day to fly from Montana to Portland, Maine when you can find flight prices for as low as $652. Flying to Portland, Maine at noon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around $817. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You could potentially save up to 19% 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

Best Price Found

$181

Fastest flight time

6h 38m

Direct flights

None

Airports in Portland, Maine

1 airport
The best one-way flight to Portland, Maine from Montana in the past 72 hours is $181. The best round-trip flight deal from Montana to Portland, Maine found on momondo in the last 72 hours is $289.
The fastest flight from Montana to Portland, Maine takes 6h 38m
There are no direct flights from Montana to Portland, Maine. Popular non-direct routes for this connection are Missoula Johnson-Bell Field Airport - Portland Airport, Bozeman Gallatin Field Airport - Portland Airport and Kalispell Glacier Park Airport - Portland Airport.
There is 1 airport near Portland, Maine: Portland (PWM)
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  • 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?

  • 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 AirlinesPriceFrom $298Free CancellationRating
7.4
8,917 reviews
Search United Airlines flights
American AirlinesPriceFrom $302Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $322Free CancellationRating
8.0
7,985 reviews
Search Delta flights
SouthwestPriceFrom $383Free CancellationRating
8.0
4,247 reviews
Search Southwest flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Boothbay Harbor
Jackson
Conway
Freeport
Bartlett
Lewiston
Gorham
Brunswick
Auburn
Intervale
Windham
Bath
Falmouth
Georgetown
Oxford
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.

An easier way to manage your Portland, Maine trip

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