$140 Cheap Flights from Portland (PDX) to Great Falls (GTF)

View $140 flight on Wed, Nov 19, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $140 for one-way flights and $238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Oct 21 - Mon, Oct 27
PDX
Portland
GTF
Great Falls
$238 Roundtrip, found 3 hours ago
$238
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Oct 21 from Portland to Great Falls, returning Mon, Oct 27, priced at $238 found 3 hours ago
Delta
Wed, Oct 22 - Sat, Oct 25
PDX
Portland
GTF
Great Falls
$240 Roundtrip, found 3 hours ago
$240
Roundtrip
found 3 hours ago
Select Delta flight, departing Wed, Oct 22 from Portland to Great Falls, returning Sat, Oct 25, priced at $240 found 3 hours ago
Delta
Fri, Oct 24 - Mon, Oct 27
PDX
Portland
GTF
Great Falls
$248 Roundtrip, found 3 hours ago
$248
Roundtrip
found 3 hours ago
Select Delta flight, departing Fri, Oct 24 from Portland to Great Falls, returning Mon, Oct 27, priced at $248 found 3 hours ago
Delta
Tue, Nov 25 - Mon, Dec 15
PDX
Portland
GTF
Great Falls
$251 Roundtrip, found 5 hours ago
$251
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, Nov 25 from Portland to Great Falls, returning Mon, Dec 15, priced at $251 found 5 hours ago
Hawaiian Airlines
Wed, Nov 5 - Tue, Nov 18
PDX
Portland
GTF
Great Falls
$252 Roundtrip, found 2 days ago
$252
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Wed, Nov 5 from Portland to Great Falls, returning Tue, Nov 18, priced at $252 found 2 days ago
Delta
Tue, Oct 14 - Tue, Oct 21
PDX
Portland
GTF
Great Falls
$254 Roundtrip, just found
$254
Roundtrip
just found
Select Delta flight, departing Tue, Oct 14 from Portland to Great Falls, returning Tue, Oct 21, priced at $254 just found
Delta
Tue, Nov 4 - Wed, Nov 19
PDX
Portland
GTF
Great Falls
$263 Roundtrip, found 2 days ago
$263
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Nov 4 from Portland to Great Falls, returning Wed, Nov 19, priced at $263 found 2 days ago
Hawaiian Airlines
Sat, Nov 1 - Tue, Nov 18
PDX
Portland
GTF
Great Falls
$266 Roundtrip, found 2 days ago
$266
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Sat, Nov 1 from Portland to Great Falls, returning Tue, Nov 18, priced at $266 found 2 days ago
Alaska Airlines
Wed, Dec 31 - Tue, Jan 13
PDX
Portland
GTF
Great Falls
$280 Roundtrip, found 2 days ago
$280
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Dec 31 from Portland to Great Falls, returning Tue, Jan 13, priced at $280 found 2 days ago
United
Wed, Oct 1 - Sat, Oct 4
PDX
Portland
GTF
Great Falls
$471 Roundtrip, found 4 days ago
$471
Roundtrip
found 4 days ago
Select United flight, departing Wed, Oct 1 from Portland to Great Falls, returning Sat, Oct 4, priced at $471 found 4 days ago

Find the cheapest month to fly from Portland (PDX) to Great Falls (GTF)

February is typically the cheapest month to fly

From $192 - $600 per traveler.

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Great Falls Intl. Airport (GTF) cost?
Snag a cheap one-way flight from $140 or cheap return flight from $238 from Portland Intl. Airport (PDX) 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. Airport (PDX) to Great Falls Intl. Airport (GTF)?
October is the cheapest month to fly from PDX to GTF. Traveling outside of peak seasons is often the key to scoring lower fares.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Great Falls Intl. Airport (GTF)?
To find the cheapest airline that'll fly you from PDX to GTF, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Portland Intl. Airport (PDX) to Great Falls Intl. Airport (GTF)?
There are no daily direct flights departing from Portland Intl. Airport (PDX) to Great Falls Intl. Airport (GTF). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from PDX to GTF?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change based on the season, 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. Airport (PDX) 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. Airport (PDX) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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. Airport (PDX) to Great Falls Intl. Airport (GTF) last-minute?
Holding off until just before your departure to book a ticket from PDX to GTF generally means paying more. While it's possible to find some last-minute deals, there's no guarantee. Allow some flexibility in your schedule for the best chance of scoring a bargain.
Is it cheaper to book a PDX to GTF flight and hotel package?
Compared with arranging flights and hotels separately, booking a PDX to GTF flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one place will take the hassle out of planning your trip. Just pick your flights and select from our wide range of hotels, then personalize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Great Falls Intl. Airport (GTF)?
In most cases, you can reschedule or cancel your PDX to GTF flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you need more information, go to our Customer Service portal.

Travel information

Travel information

Origin airport
Portland Intl.
Destination airport
Great Falls Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$238
Distance
549 mi

Book with confidence

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 October. 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 $140 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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Explore a world of travel with Expedia

*Available to One Key members.