HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Great Falls

$602+ Cheap flights from Portland, ME to Great Falls (PWM - GTF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/25. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — GTF
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Great Falls 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 Great Falls

Cheapest flights from Portland to Great Falls
Explore the most affordable flight options available from Portland to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 12, 2026.

This United Airlines deal was found by Cheapflights users on 2/10. 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.
Thu 6/2510:55 am
PWM
-
GTF
2 stops12h 24m
United Airlines
Wed 7/812:30 pm
GTF
-
PWM
1 stop7h 28m
United Airlines
Deal found 2/10$602
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Wed 6/244:58 pm
PWM
-
GTF
2 stops30h 21m
United Airlines
Thu 7/912:30 pm
GTF
-
PWM
1 stop7h 28m
United Airlines
Deal found 2/10$608
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Wed 6/247:15 pm
PWM
-
GTF
2 stops28h 04m
United Airlines
Tue 7/76:15 am
GTF
-
PWM
2 stops25h 47m
United Airlines
Deal found 2/10$617
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Fri 10/307:22 pm
PWM
-
GTF
2 stops29h 08m
United Airlines
Mon 11/26:15 am
GTF
-
PWM
2 stops14h 42m
United Airlines
Deal found 2/10$637
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Tue 6/234:58 pm
PWM
-
GTF
2 stops30h 21m
United Airlines
Thu 7/912:30 pm
GTF
-
PWM
1 stop7h 28m
United Airlines
Deal found 2/10$658
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Tue 6/234:58 pm
PWM
-
GTF
2 stops30h 21m
United Airlines
Wed 7/812:30 pm
GTF
-
PWM
2 stops9h 20m
United Airlines
Deal found 2/10$663
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Tue 6/234:58 pm
PWM
-
GTF
2 stops30h 21m
United Airlines
Tue 7/76:15 am
GTF
-
PWM
2 stops25h 47m
United Airlines
Deal found 2/10$667
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Wed 6/245:20 am
PWM
-
GTF
3 stops17h 59m
United Airlines
Wed 7/812:30 pm
GTF
-
PWM
2 stops9h 20m
United Airlines
Deal found 2/10$668
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Sat 6/277:15 pm
PWM
-
GTF
2 stops28h 04m
United Airlines
Wed 7/812:30 pm
GTF
-
PWM
1 stop7h 28m
United Airlines
Deal found 2/10$683

Find flight deals from Portland to Great Falls

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Great Falls (GTF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$602
(United Airlines)
Provider with most accurate pricing for Portland-Great Falls flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Great Falls flights.
Search Deals
From Portland to Great Falls
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Great Falls 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 February 12, 2026.
Use the filters below to find and compare flights from Portland to Great Falls that are best for you.

Fly from

Portland

Fly to

Great Falls

Route

Depart

Return

Price

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

Thu 6/25

10:55 am-9:19 pm

2 stops12h 24m

Great Falls

Wed 7/8

12:30 pm-9:58 pm

1 stop7h 28m

$602

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

Wed 6/24

4:58 pm-9:19 pm

2 stops30h 21m

Great Falls

Wed 7/8

12:30 pm-9:58 pm

1 stop7h 28m

$608

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

Wed 6/24

4:58 pm-9:19 pm

2 stops30h 21m

Great Falls

Thu 7/9

12:30 pm-9:58 pm

1 stop7h 28m

$608

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

Tue 6/23

4:58 pm-9:19 pm

2 stops30h 21m

Great Falls

Thu 7/9

12:30 pm-9:58 pm

1 stop7h 28m

$658

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

Tue 6/23

4:58 pm-9:19 pm

2 stops30h 21m

Great Falls

Wed 7/8

12:30 pm-11:50 pm

2 stops9h 20m

$663

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

Tue 6/23

4:58 pm-9:19 pm

2 stops30h 21m

Great Falls

Tue 7/7

6:15 am-10:02 am

2 stops25h 47m

$667

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

Tue 6/23

4:58 pm-9:19 pm

2 stops30h 21m

Great Falls

Fri 7/10

2:29 pm-11:50 pm

2 stops31h 21m

$667

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

Wed 6/24

5:20 am-9:19 pm

3 stops17h 59m

Great Falls

Fri 7/10

2:29 pm-11:50 pm

2 stops31h 21m

$672

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

Sat 6/27

7:15 pm-9:19 pm

2 stops28h 04m

Great Falls

Wed 7/8

12:30 pm-9:58 pm

1 stop7h 28m

$683

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

Sat 6/27

7:15 pm-9:19 pm

2 stops28h 04m

Great Falls

Thu 7/9

12:30 pm-11:50 pm

2 stops9h 20m

$688

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

  • Most accurate provider: When it comes to deals on Portland, Maine-Great Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Great Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Great Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Great Falls flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-Great Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Great Falls

Have a flexible travel schedule? Discover the best time to fly to Great Falls 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.

Reviews of airlines servicing Great Falls

Get insights into the airlines that provide service to Great Falls. 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 Great Falls. Reviews last updated February 12, 2026.
Read through reviews of airlines operating flights from Portland to Great Falls, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,283 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,283 reviews
United Airlines
7.4
Good
9,283 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

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

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

    Airlines like United Airlines fly from Portland, Maine to Great Falls in about 12h 24m. The time it takes to get you to your destination can typically vary by up to . The distance between Portland, Maine and Great Falls is about 1979 mi.

  • What is the cheapest airline to fly from Portland, Maine to Great Falls round-trip?

    According to our current data, United Airlines ($340), offers the cheapest pricing from Portland, Maine to Great Falls.

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

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

  • How can I find direct flights from Portland to Great Falls?

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

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

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

See more FAQs

Traveling to a place near Great Falls?

Book flights to Great Falls if you plan to visit one of these locations
Shelby

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.

Top airline flying from Portland to Great Falls

Discover the top airline that operate flights from Portland to Great Falls. 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 February 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$340Average$582FlexibilityNo cancel feeOn-time69%

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.