$370 Cheap Flights from Portland (PWM) to Great Falls (GTF)

View $370 flight on Fri, Aug 28, 2026Opens in a new window

Popular airlines from Portland Intl. Jetport Airport (PWM) to Great Falls, MT (GTF-Great Falls Intl.)

Cheap Flights from Portland to Great Falls (PWM-GTF)

Prices were available within the past 7 days and start at $370 for one-way flights and $368 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Nov 18 - Thu, Nov 27
PWM
Portland
GTF
Great Falls
$368 Roundtrip, found 4 days ago
$368
Roundtrip
found 4 days ago
Select United flight, departing Tue, Nov 18 from Portland to Great Falls, returning Thu, Nov 27, priced at $368 found 4 days ago
United
Sat, Jan 17 - Tue, Jan 27
PWM
Portland
GTF
Great Falls
$379 Roundtrip, found 4 days ago
$379
Roundtrip
found 4 days ago
Select United flight, departing Sat, Jan 17 from Portland to Great Falls, returning Tue, Jan 27, priced at $379 found 4 days ago
United
Wed, Nov 12 - Mon, Nov 17
PWM
Portland
GTF
Great Falls
$393 Roundtrip, found 4 days ago
$393
Roundtrip
found 4 days ago
Select United flight, departing Wed, Nov 12 from Portland to Great Falls, returning Mon, Nov 17, priced at $393 found 4 days ago
Delta
Wed, Jan 21 - Tue, Feb 3
PWM
Portland
GTF
Great Falls
$412 Roundtrip, found 4 days ago
$412
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Jan 21 from Portland to Great Falls, returning Tue, Feb 3, priced at $412 found 4 days ago
Delta
Wed, Jan 21 - Sat, Feb 7
PWM
Portland
GTF
Great Falls
$416 Roundtrip, found 4 days ago
$416
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Jan 21 from Portland to Great Falls, returning Sat, Feb 7, priced at $416 found 4 days ago
Delta
Wed, Jan 21 - Fri, Feb 6
PWM
Portland
GTF
Great Falls
$432 Roundtrip, found 4 days ago
$432
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Jan 21 from Portland to Great Falls, returning Fri, Feb 6, priced at $432 found 4 days ago
Delta
Tue, Jan 13 - Sat, Jan 31
PWM
Portland
GTF
Great Falls
$438 Roundtrip, found 4 days ago
$438
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Jan 13 from Portland to Great Falls, returning Sat, Jan 31, priced at $438 found 4 days ago
Delta
Wed, Jan 21 - Wed, Feb 4
PWM
Portland
GTF
Great Falls
$441 Roundtrip, found 4 days ago
$441
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Jan 21 from Portland to Great Falls, returning Wed, Feb 4, priced at $441 found 4 days ago
Delta
Tue, Jan 27 - Tue, Feb 10
PWM
Portland
GTF
Great Falls
$442 Roundtrip, found 4 days ago
$442
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Jan 27 from Portland to Great Falls, returning Tue, Feb 10, priced at $442 found 4 days ago
United
Mon, Jan 26 - Tue, Feb 10
PWM
Portland
GTF
Great Falls
$449 Roundtrip, found 4 days ago
$449
Roundtrip
found 4 days ago
Select United flight, departing Mon, Jan 26 from Portland to Great Falls, returning Tue, Feb 10, priced at $449 found 4 days ago

Alternative airports near Great Falls

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Great Falls Intl. GTF. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $393
GTF
Great Falls Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $393

Frequently asked questions

How much does a flight from Portland Intl. Jetport Airport (PWM) to Great Falls Intl. Airport (GTF) cost?
Grab a cheap one-way flight from $370 or cheap return flight from $368 from Portland Intl. Jetport Airport (PWM) to Great Falls Intl. Airport (GTF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Portland Intl. Jetport Airport (PWM) to Great Falls Intl. Airport (GTF)?
November is the least expensive month to fly from PWM to GTF. Avoiding peak travel times is often the key to finding better fares.
What is the cheapest airline that flies from Portland Intl. Jetport Airport (PWM) to Great Falls Intl. Airport (GTF)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest PWM to GTF flight.
How many flights per day from Portland Intl. Jetport Airport (PWM) to Great Falls Intl. Airport (GTF)?
There are no daily nonstop flights from Portland Intl. Jetport Airport (PWM) to Great Falls Intl. Airport (GTF). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from PWM to GTF?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can change based on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Jetport Airport (PWM) to Great Falls Intl. Airport (GTF)?
To land at Great Falls Intl. Airport (GTF) without delays, select a flight that takes off from Portland Intl. Jetport Airport (PWM) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Portland Intl. Jetport Airport (PWM) to Great Falls Intl. Airport (GTF) last-minute?
Waiting until just before your departure to book a ticket from PWM to GTF often results in higher prices. Although you may find some last-minute discounts, they aren't always guaranteed. Allow some flexibility in your schedule for a better chance of scoring a bargain.
Is it cheaper to book a PWM to GTF flight and hotel package?
Booking a PWM to GTF flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Choose from our impressive range of hotels and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Portland Intl. Jetport Airport (PWM) to Great Falls Intl. Airport (GTF)?
If you booked your PWM to GTF flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

Travel information

Origin airport
Portland Intl. Jetport
Destination airport
Great Falls Intl.
Roundtrip price
$368
Distance
1979 mi

Book with confidence

Portland to Great Falls Flights

The cheapest times to fly from Portland to Great Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portland to Great Falls are during the month of November. You can find some of the cheapest flights from Portland to Great Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Great Falls

Sunday is one of the best days to book for cheap flights from Portland to Great Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portland to Great Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portland to Great Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $370 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portland to Great Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portland to Great Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Portland to Great Falls Flights

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*Available to One Key members.