What is the cheapest airline that flies from Portland to Great Falls?

Delta and Alaska Airlines are the most popular carriers operating from Portland to Great Falls

When did momondo last update prices for flights from Portland Airport to Great Falls Airport?

Prices for flights from Portland Airport to Great Falls Airport refresh daily.

How many operators does momondo search for flights from Portland Airport to Great Falls Airport?

The number of operators available for flights from Portland Airport to Great Falls Airport is 2 as of November 2025.

How old do you have to be to fly from Portland Airport to Great Falls Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Great Falls Airport.

What documentation or ID do you need to fly to Great Falls Airport?

The required travel and health documents for your Great Falls Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Great Falls Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$170 Cheap Flights from Portland to Great Falls in 2025/26

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Find the cheapest flights from Portland to Great Falls

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:10 am - 5:19 pmPDX-GTF

9h 09m1 stop

5:59 pm - 8:47 pmGTF-PDX

3h 48m1 stop

$234Hawaiian Airlines

Find Deal

Sat, Jan 17 - Wed, Jan 21

1:38 pm - 5:19 pmPDX-GTF

26h 41m1 stop

5:59 pm - 9:29 amGTF-PDX

16h 30m1 stop

$244Alaska Airlines

Find Deal

Fri, Feb 6 - Sun, Feb 8

5:50 am - 12:33 pmPDX-GTF

5h 43m1 stop

6:10 pm - 12:44 pmGTF-PDX

19h 34m2 stops

$251Delta

Find Deal

Sat, Jan 17 - Wed, Jan 21

5:50 am - 12:33 pmPDX-GTF

5h 43m1 stop

6:10 pm - 10:07 amGTF-PDX

16h 57m2 stops

$256Delta

Find Deal

Sat, Jan 17 - Wed, Jan 21

7:10 am - 12:33 pmPDX-GTF

28h 23m2 stops

1:12 pm - 8:59 pmGTF-PDX

8h 47m2 stops

$271Delta

Find Deal

Sat, Jan 17 - Wed, Jan 21

5:50 am - 12:33 pmPDX-GTF

5h 43m1 stop

1:12 pm - 8:59 pmGTF-PDX

8h 47m2 stops

$272Delta

Find Deal

Sat, Jan 17 - Wed, Jan 21

7:40 am - 5:19 pmPDX-GTF

32h 39m2 stops

5:59 pm - 9:29 amGTF-PDX

16h 30m1 stop

$281Alaska Airlines

Find Deal

Fri, Feb 6 - Sun, Feb 8

5:15 pm - 12:33 pmPDX-GTF

18h 18m2 stops

1:12 pm - 6:50 pmGTF-PDX

6h 38m2 stops

$316Delta

Find Deal

Sat, Jan 17 - Wed, Jan 21

5:15 pm - 12:33 pmPDX-GTF

18h 18m2 stops

1:12 pm - 6:50 pmGTF-PDX

6h 38m2 stops

$317Delta

Find Deal

Sat, Jan 17 - Wed, Jan 21

7:40 am - 5:19 pmPDX-GTF

32h 39m2 stops

5:59 pm - 9:45 amGTF-PDX

40h 46m2 stops

$319Alaska Airlines

Find Deal

Fri, Feb 6 - Sun, Feb 8

Alaska Airlines flights from Portland to Great Falls

Our best Alaska Airlines deals on Portland to Great Falls flight tickets

Alaska Airlines

Feb 6

PDX1:38 pmPortland

26h 41m

1 stop

GTF5:19 pmGreat Falls

Feb 8

GTF5:59 pmGreat Falls

16h 30m

1 stop

PDX9:29 amPortland

$244

Find similar

Alaska Airlines

Feb 6

PDX7:40 amPortland

32h 39m

2 stops

GTF5:19 pmGreat Falls

Feb 8

GTF5:59 pmGreat Falls

16h 30m

1 stop

PDX9:29 amPortland

$281

Find similar

Alaska Airlines

Feb 6

PDX7:40 amPortland

32h 39m

2 stops

GTF5:19 pmGreat Falls

Feb 8

GTF5:59 pmGreat Falls

40h 46m

2 stops

PDX9:45 amPortland

$319

Find similar

Delta flights from Portland to Great Falls

Our best Delta deals on Portland to Great Falls flight tickets

Delta

Jan 17

PDX5:50 amPortland

5h 43m

1 stop

GTF12:33 pmGreat Falls

Jan 21

GTF6:10 pmGreat Falls

19h 34m

2 stops

PDX12:44 pmPortland

$251

Find similar

Delta

Jan 17

PDX5:50 amPortland

5h 43m

1 stop

GTF12:33 pmGreat Falls

Jan 21

GTF6:10 pmGreat Falls

16h 57m

2 stops

PDX10:07 amPortland

$256

Find similar

Delta

Jan 17

PDX7:10 amPortland

28h 23m

2 stops

GTF12:33 pmGreat Falls

Jan 21

GTF1:12 pmGreat Falls

8h 47m

2 stops

PDX8:59 pmPortland

$271

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 1/17

7:10 am-5:19 pm

1 stop9h 09m

Great Falls

Wed 1/21

5:59 pm-8:47 pm

1 stop3h 48m

$234

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 2/6

1:38 pm-5:19 pm

1 stop26h 41m

Great Falls

Sun 2/8

5:59 pm-9:29 am

1 stop16h 30m

$244

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 1/17

5:50 am-12:33 pm

1 stop5h 43m

Great Falls

Wed 1/21

6:10 pm-12:44 pm

2 stops19h 34m

$251

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 1/17

5:50 am-12:33 pm

1 stop5h 43m

Great Falls

Wed 1/21

6:10 pm-10:07 am

2 stops16h 57m

$256

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 1/17

7:10 am-12:33 pm

2 stops28h 23m

Great Falls

Wed 1/21

1:12 pm-8:59 pm

2 stops8h 47m

$271

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 1/17

5:50 am-12:33 pm

1 stop5h 43m

Great Falls

Wed 1/21

1:12 pm-8:59 pm

2 stops8h 47m

$272

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 2/6

7:40 am-5:19 pm

2 stops32h 39m

Great Falls

Sun 2/8

5:59 pm-9:29 am

1 stop16h 30m

$281

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 1/17

5:15 pm-12:33 pm

2 stops18h 18m

Great Falls

Wed 1/21

1:12 pm-6:50 pm

2 stops6h 38m

$316

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 1/17

5:15 pm-12:33 pm

2 stops18h 18m

Great Falls

Wed 1/21

1:12 pm-6:50 pm

2 stops6h 38m

$317

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 2/6

7:40 am-5:19 pm

2 stops32h 39m

Great Falls

Sun 2/8

5:59 pm-9:45 am

2 stops40h 46m

$319

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland to Great Falls

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

Prices

Airlines

What is the cheapest month to fly to Great Falls?

The month of May is another great option to travel to Great Falls, with average flight prices from Portland averaging around $345.

What is the cheapest day to depart on your flight to Great Falls?

The cheapest day to depart on your flight to Great Falls is on a Saturday when prices can be found for as low as $307. This is often the case because there is less demand to fly during this day of the week. On the other hand, Thursday is the most expensive day to depart from Portland because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $428.

What is the cheapest time of day to depart on your flight to Great Falls?

According to our data, the cheapest time of day to fly to Great Falls is in the afternoon. momondo users have found flights departing from Portland to Great Falls in the afternoon for as low as $341. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $367 on average. Flights to Great Falls from Portland in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Portland to Great Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Great Falls according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland to Great Falls (PDX to GTF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Great Falls

Fastest flight time	4h 25m
Direct flights	None

The fastest flight from Portland to Great Falls takes 4h 25m

There are no direct flights from Portland to Great Falls. There are no popular flight routes from Portland to Great Falls.

Search flight deals

How far is Portland to Great Falls by plane?
Portland and Great Falls are 556.9 mi apart from one another. 4h 21m is a normal flight duration for this route.
When did momondo last update prices for flights from Portland Airport to Great Falls Airport?
Prices for flights from Portland Airport to Great Falls Airport refresh daily.
How many operators does momondo search for flights from Portland Airport to Great Falls Airport?
The number of operators available for flights from Portland Airport to Great Falls Airport is 2 as of November 2025.
How old do you have to be to fly from Portland Airport to Great Falls Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Great Falls Airport.
What documentation or ID do you need to fly to Great Falls Airport?
The required travel and health documents for your Great Falls Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Great Falls Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Portland to Great Falls?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to Great Falls is Delta (62% of total bookings). The next most popular airline is Alaska Airlines (38%).

Best airlines flying from Portland to Great Falls

Compare and see reviews for airlines that fly from Portland to Great Falls with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $260	Free Cancellation	Rating 7.9 7,998 reviews		Search Delta flights
Alaska Airlines	PriceFrom $264	Free Cancellation	Rating 8.0 11,354 reviews		Search Alaska Airlines flights

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Why use momondo?

Why should I use momondo to find a flight deal from Portland to Great Falls?

It is quick and easy to find Portland to Great Falls flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Great Falls that suits you.

Can I find flights from Portland to Great Falls with flexible booking policies on momondo?

momondo does allow users to show only those flights to Great Falls from Portland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Portland to Great Falls?

Once you have performed a search for Portland to Great Falls flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Portland to Great Falls right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Great Falls from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.