HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Montana

$183+ Cheap flights from Portland, ME (PWM) to Montana

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BZN
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Montana with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Portland to Montana

Keep the following information in mind while searching for Portland to Montana flight deals. Data was last updated septiembre 16, 2025.

Round-trip from

$319
(Delta)

One-way from

$183
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$456
From Portland to Montana
Search Deals
One-way flight from Portland to Montana
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Portland to Montana

Cheapest flights from Portland to Montana
Explore the most affordable flight options available from Portland to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 16, 2025.

This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/112:00 pmPWM - MSO
2 stops11h 40mDelta
mar. 11/48:00 amMSO - PWM
2 stops12h 19mDelta
Deal found 9/15$319
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/216:14 amPWM - BZN
1 stop7h 25mUnited Airlines
lun. 10/274:00 pmBZN - PWM
2 stops16h 04mUnited Airlines
Deal found 9/14$353
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/46:00 amPWM - GTF
2 stops9h 26mUnited Airlines
mar. 10/77:00 amGTF - PWM
2 stops12h 44mUnited Airlines
Deal found 9/13$379
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/226:14 amPWM - BIL
1 stop7h 02mUnited Airlines
sáb. 10/2511:58 amBIL - PWM
1 stop7h 46mUnited Airlines
Deal found 9/15$379
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/221:05 pmPWM - BIL
2 stops10h 48mAmerican Airlines
mié. 10/296:42 amBIL - PWM
2 stops11h 32mAmerican Airlines
Deal found 9/15$389
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/241:46 pmPWM - BIL
2 stops11h 32mDelta
mar. 10/286:25 amBIL - PWM
2 stops14h 44mDelta
Deal found 9/15$390
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/306:14 amPWM - BIL
1 stop7h 02mUnited Airlines
mar. 10/711:58 amBIL - PWM
1 stop7h 46mUnited Airlines
Deal found 9/15$404
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/13:20 pmPWM - MSO
1 stop8h 27mUnited Airlines
mar. 11/46:20 amMSO - PWM
1 stop7h 28mUnited Airlines
Deal found 9/15$409
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/36:14 amPWM - BZN
1 stop7h 25mUnited Airlines
mar. 10/77:00 amBZN - PWM
2 stops12h 44mUnited Airlines
Deal found 9/14$414
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/241:46 pmPWM - BIL
2 stops11h 32mDelta
lun. 10/276:25 amBIL - PWM
2 stops14h 44mDelta
Deal found 9/15$422
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/16:14 amPWM - BIL
1 stop7h 02mUnited Airlines
mié. 10/87:00 amBIL - PWM
2 stops14h 13mUnited Airlines
Deal found 9/15$423
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/261:09 pmPWM - MSO
2 stops12h 09mAmerican Airlines
sáb. 10/46:40 amMSO - PWM
2 stops9h 15mAmerican Airlines
Deal found 9/15$424

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland 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, Cheapflights users made 2,558,603 searches. Data last updated septiembre 16, 2025.
Use the filters below to find and compare flights from Portland to Montana that are best for you.

Fly from

Portland

Fly to

Montana

Route

Depart

Return

Price

PortlandMissoula

PWM - MSO

PWMMSO

Portland

sáb. 11/1

12:00 pm-9:40 pm

2 stops11h 40m

Missoula Johnson-Bell Field

mar. 11/4

8:00 am-10:19 pm

2 stops12h 19m

$319

PortlandBozeman

PWM - BZN

PWMBZN

Portland

mar. 10/21

6:14 am-11:39 am

1 stop7h 25m

Bozeman Gallatin Field

lun. 10/27

4:00 pm-10:04 am

2 stops16h 04m

$353

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

sáb. 10/4

6:00 am-1:26 pm

2 stops9h 26m

Great Falls

mar. 10/7

7:00 am-9:44 pm

2 stops12h 44m

$379

PortlandBillings

PWM - BIL

PWMBIL

Portland

mié. 10/1

6:14 am-11:16 am

1 stop7h 02m

Billings Logan Intl

mar. 10/7

11:58 am-9:44 pm

1 stop7h 46m

$404

PortlandBillings

PWM - BIL

PWMBIL

Portland

mar. 9/30

6:14 am-11:16 am

1 stop7h 02m

Billings Logan Intl

mar. 10/7

11:58 am-9:44 pm

1 stop7h 46m

$404

PortlandMissoula

PWM - MSO

PWMMSO

Portland

sáb. 11/1

3:20 pm-9:47 pm

1 stop8h 27m

Missoula Johnson-Bell Field

mar. 11/4

6:20 am-3:48 pm

1 stop7h 28m

$409

PortlandBillings

PWM - BIL

PWMBIL

Portland

mié. 10/22

6:14 am-1:18 pm

2 stops9h 04m

Billings Logan Intl

mié. 10/29

7:00 am-3:48 pm

1 stop6h 48m

$409

PortlandBillings

PWM - BIL

PWMBIL

Portland

sáb. 10/4

6:14 am-1:18 pm

2 stops9h 04m

Billings Logan Intl

mar. 10/7

7:00 am-9:44 pm

2 stops12h 44m

$414

PortlandBillings

PWM - BIL

PWMBIL

Portland

jue. 10/2

5:45 am-5:13 pm

2 stops13h 28m

Billings Logan Intl

mar. 10/7

7:00 am-9:44 pm

2 stops12h 44m

$414

PortlandBillings

PWM - BIL

PWMBIL

Portland

vie. 10/3

9:59 am-8:49 pm

2 stops12h 50m

Billings Logan Intl

mar. 10/7

7:00 am-9:44 pm

2 stops12h 44m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 37 results
1
2
3
4

Best time to book a flight from Portland to Montana

Have a flexible travel schedule? Discover the best time to fly to Montana from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Montana

What is the cheapest month to book a flight from Portland, Maine to Montana?

Currently, October is the cheapest month in which you can book a flight from Portland, Maine to Montana (average of $371). Flying from Portland, Maine to Montana in May is currently the most expensive (average of $476). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PWM to MT?

Find hourly flight availability from Portland to Montana. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 16, 2025.

When flying from Portland, Maine to Montana, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Montana

Get insights into the airlines that provide service to Montana. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Montana. Reviews last updated septiembre 16, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Portland to Montana have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,957 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,924 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Portland to Montana. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to Montana?

    Portland (PWM), located 2.9 mi from the city center, is the airport you fly out of when you book flights from Portland to Montana.

  • How long is the flight from Portland, Maine to Montana?

    Airlines like Delta and United Airlines fly from Portland, Maine to Montana in about 7h 25m. The time it takes to get you to your destination can typically vary by up to 4h 15m. There are 1988 mi between Portland, Maine and Montana. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Portland, Maine to Montana one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $183. Users have also found prices from $200 and $211 on Southwest and United Airlines, respectively.

  • What are the most popular routes from Portland, Maine to Montana?

    Most travelers choose Portland - Billings Logan Intl, Portland - Bozeman Gallatin Field or Portland - Great Falls when deciding on the best route from Portland, Maine to Montana.

  • Can I find deals for flights from Portland to Montana that include hotel bookings?

    Yes. In addition to deals on Portland to Montana flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Montana?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Montana.

  • Can I find deals for business class flights from Portland to Montana?

    Yes. Cheapflights offers flight deals from Portland to Montana by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland, Maine to Montana?

    Currently, October is the cheapest month in which you can book a flight from Portland, Maine to Montana (average of $371). Flying from Portland, Maine to Montana in May is currently the most expensive (average of $476). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Montana

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Orlando flights
Boston to Las Vegas flights
Boston to Los Angeles flights
Boston to Dallas/Fort Worth flights
Boston to Atlanta flights
Boston to Baltimore flights
Boston to Sky Harbor Intl flights
Boston to Nashville flights
Boston to Fort Lauderdale flights
Boston to San Francisco flights
Boston to Reagan-National flights
Boston to O'Hare Intl flights
Boston to Miami flights
Boston to Dulles Intl flights
Boston to Tampa flights
Boston to Denver flights
Boston to Raleigh flights
Boston to New Orleans flights
Boston to Charlotte flights
Boston to Seattle flights
Boston to Austin flights
Boston to Hobby flights
Boston to LaGuardia flights
Boston to Philadelphia flights
Boston to Fort Myers flights
Boston to San Diego flights
Boston to Salt Lake City flights
Boston to West Palm Beach flights
Boston to John F Kennedy Intl flights
Boston to Newark flights
Boston to George Bush Intcntl flights
Boston to Cincinnati flights
Boston to Charleston flights
Boston to Pittsburgh flights
Boston to Jacksonville flights
Boston to Columbus flights
Boston to Detroit flights
Boston to Portland flights
Boston to Love Field flights
Boston to Cleveland flights
Boston to Indianapolis flights
Boston to Honolulu flights
Boston to Midway flights
Boston to Ontario flights
Boston to Milwaukee flights
Boston to Savannah flights
Boston to Myrtle Beach flights
Boston to St. Louis flights
Boston to Sarasota flights
Boston to Key West flights

Top 4 airlines flying from Portland to Montana

Discover the top 4 airlines that operate flights from Portland to Montana. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$263Average$610FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$308Average$637FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$311Average$576FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$390Average$526FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.