Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Montana to Boston from $187

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 Boston departing on 10/15. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Montana to Boston

Cheap round-trip flights

United Airlines Logo
6:20 am - 3:48 pmMSO-PWM
7h 28m1 stop
United Airlines Logo
3:20 pm - 9:47 pmPWM-MSO
8h 27m1 stop
$309United Airlines
Find Deal
Fri, Oct 31 - Tue, Nov 4
Delta Logo
8:00 am - 10:19 pmMSO-PWM
12h 19m2 stops
Delta Logo
12:45 pm - 12:17 amPWM-MSO
13h 32m2 stops
$319Delta
Find Deal
Sat, Nov 1 - Tue, Nov 4
United Airlines Logo
6:20 am - 3:48 pmMSO-PWM
7h 28m1 stop
United Airlines Logo
3:20 pm - 9:47 pmPWM-MSO
8h 27m1 stop
$325United Airlines
Find Deal
Wed, Oct 29 - Tue, Nov 4
Delta Logo
8:00 am - 10:19 pmMSO-PWM
12h 19m2 stops
Delta Logo
4:48 pm - 12:17 amPWM-MSO
9h 29m2 stops
$344Delta
Find Deal
Sat, Nov 1 - Thu, Nov 6
United Airlines Logo
6:20 am - 3:48 pmMSO-PWM
7h 28m1 stop
United Airlines Logo
9:45 am - 9:47 pmPWM-MSO
14h 02m2 stops
$372United Airlines
Find Deal
Fri, Oct 31 - Tue, Nov 4
United Airlines Logo
6:20 am - 3:48 pmMSO-PWM
7h 28m1 stop
United Airlines Logo
3:20 pm - 9:47 pmPWM-MSO
8h 27m1 stop
$382United Airlines
Find Deal
Thu, Oct 30 - Tue, Nov 4
Delta Logo
6:20 pm - 12:05 amMSO-PWM
27h 45m2 stops
Delta Logo
4:48 pm - 12:17 amPWM-MSO
9h 29m2 stops
$400Delta
Find Deal
Wed, Oct 29 - Tue, Nov 4
American Airlines Logo
1:14 pm - 10:45 pmFCA-PWM
7h 31m1 stop
American Airlines Logo
6:14 am - 12:43 pmPWM-FCA
8h 29m1 stop
$414American Airlines
Find Deal
Fri, Oct 17 - Wed, Oct 22
American Airlines Logo
7:00 am - 11:44 pmBZN-PWM
14h 44m2 stops
American Airlines Logo
5:20 pm - 12:08 pmPWM-BZN
20h 48m2 stops
$488American Airlines
Find Deal
Thu, Mar 5 - Mon, Mar 9
American Airlines Logo
4:54 pm - 11:28 amBZN-PWM
16h 34m1 stop
American Airlines Logo
6:00 am - 4:01 pmPWM-BZN
12h 01m2 stops
$523American Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22

United Airlines flights from Montana to Portland, Maine

Our best United Airlines deals on Montana to Portland, Maine flight tickets
United Airlines
Oct 31
MSO6:20 amMissoula Johnson-Bell Field
7h 28m
1 stop
PWM3:48 pmPortland
Nov 4
PWM3:20 pmPortland
8h 27m
1 stop
MSO9:47 pmMissoula Johnson-Bell Field
$309
Find similar
United Airlines
Oct 29
MSO6:20 amMissoula Johnson-Bell Field
7h 28m
1 stop
PWM3:48 pmPortland
Nov 4
PWM3:20 pmPortland
8h 27m
1 stop
MSO9:47 pmMissoula Johnson-Bell Field
$325
Find similar
United Airlines
Oct 31
MSO6:20 amMissoula Johnson-Bell Field
7h 28m
1 stop
PWM3:48 pmPortland
Nov 4
PWM9:45 amPortland
14h 02m
2 stops
MSO9:47 pmMissoula Johnson-Bell Field
$372
Find similar

Delta flights from Montana to Portland, Maine

Our best Delta deals on Montana to Portland, Maine flight tickets
Delta
Nov 1
MSO8:00 amMissoula Johnson-Bell Field
12h 19m
2 stops
PWM10:19 pmPortland
Nov 4
PWM12:45 pmPortland
13h 32m
2 stops
MSO12:17 amMissoula Johnson-Bell Field
$319
Find similar
Delta
Nov 1
MSO8:00 amMissoula Johnson-Bell Field
12h 19m
2 stops
PWM10:19 pmPortland
Nov 6
PWM4:48 pmPortland
9h 29m
2 stops
MSO12:17 amMissoula Johnson-Bell Field
$344
Find similar
Delta
Oct 29
MSO6:20 pmMissoula Johnson-Bell Field
27h 45m
2 stops
PWM12:05 amPortland
Nov 4
PWM4:48 pmPortland
9h 29m
2 stops
MSO12:17 amMissoula Johnson-Bell Field
$400
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 September 25, 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

MissoulaPortland

MSO - PWM

MSOPWM

Missoula Johnson-Bell Field

Fri 10/31

6:20 am-3:48 pm

1 stop7h 28m

Portland

Tue 11/4

3:20 pm-9:47 pm

1 stop8h 27m

$309

MissoulaPortland

MSO - PWM

MSOPWM

Missoula Johnson-Bell Field

Sat 11/1

8:00 am-10:19 pm

2 stops12h 19m

Portland

Tue 11/4

12:45 pm-12:17 am

2 stops13h 32m

$319

MissoulaPortland

MSO - PWM

MSOPWM

Missoula Johnson-Bell Field

Wed 10/29

6:20 am-3:48 pm

1 stop7h 28m

Portland

Tue 11/4

3:20 pm-9:47 pm

1 stop8h 27m

$325

MissoulaPortland

MSO - PWM

MSOPWM

Missoula Johnson-Bell Field

Sat 11/1

8:00 am-10:19 pm

2 stops12h 19m

Portland

Thu 11/6

4:48 pm-12:17 am

2 stops9h 29m

$344

MissoulaPortland

MSO - PWM

MSOPWM

Missoula Johnson-Bell Field

Fri 10/31

6:20 am-3:48 pm

1 stop7h 28m

Portland

Tue 11/4

9:45 am-9:47 pm

2 stops14h 02m

$372

MissoulaPortland

MSO - PWM

MSOPWM

Missoula Johnson-Bell Field

Thu 10/30

6:20 am-3:48 pm

1 stop7h 28m

Portland

Tue 11/4

3:20 pm-9:47 pm

1 stop8h 27m

$382

MissoulaPortland

MSO - PWM

MSOPWM

Missoula Johnson-Bell Field

Wed 10/29

6:20 pm-12:05 am

2 stops27h 45m

Portland

Tue 11/4

4:48 pm-12:17 am

2 stops9h 29m

$400

KalispellPortland

FCA - PWM

FCAPWM

Kalispell Glacier Park

Fri 10/17

1:14 pm-10:45 pm

1 stop7h 31m

Portland

Wed 10/22

6:14 am-12:43 pm

1 stop8h 29m

$414

BozemanPortland

BZN - PWM

BZNPWM

Bozeman Gallatin Field

Thu 3/5

7:00 am-11:44 pm

2 stops14h 44m

Portland

Mon 3/9

5:20 pm-12:08 pm

2 stops20h 48m

$488

BozemanPortland

BZN - PWM

BZNPWM

Bozeman Gallatin Field

Wed 10/15

4:54 pm-11:28 am

1 stop16h 34m

Portland

Wed 10/22

6:00 am-4:01 pm

2 stops12h 01m

$523

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Boston 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 $490.

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 6% 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

Direct flights

None
There are no direct flights from Montana to Portland, Maine. There are no popular flight routes from Montana to Portland, Maine.
Search flight deals

  • 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
8,928 reviews
Search United Airlines flights
American AirlinesPriceFrom $302Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $312Free CancellationRating
7.9
7,973 reviews
Search Delta flights

Traveling to a place near Boston?

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

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

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 10/25
Sat 11/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States