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 June 2026.

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.

$192 Cheap Flights from Portland to Great Falls in 2026

Q: What is the typical price of a round-trip flight between Portland and Great Falls?

Prices are currently low for flights on this route. Typical prices usually range from $799 to $743. The lowest price recently found on this route was $326.

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Find the cheapest flights from Portland to Great Falls

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:45 am - 4:39 pm

PDX

GTF

4h 54m

1 stop

5:19 pm - 10:01 pm

GTF

PDX

5h 42m

1 stop

$326Alaska Airlines

Sat, Sep 26 - Wed, Sep 30

7:09 am - 4:39 pm

PDX

GTF

8h 30m

1 stop

5:19 pm - 7:50 pm

GTF

PDX

3h 31m

1 stop

$362Alaska Airlines

Sat, Sep 26 - Wed, Sep 30

9:32 pm - 4:38 pm

PDX

GTF

18h 06m

1 stop

5:18 pm - 8:11 am

GTF

PDX

15h 53m

1 stop

$382Alaska Airlines

Fri, Aug 28 - Fri, Sep 4

5:05 pm - 10:53 pm

PDX

GTF

4h 48m

1 stop

1:10 pm - 6:17 pm

GTF

PDX

6h 07m

1 stop

$384Delta

Fri, Oct 23 - Sun, Oct 25

5:05 pm - 10:53 pm

PDX

GTF

4h 48m

1 stop

1:10 pm - 7:58 pm

GTF

PDX

7h 48m

2 stops

$390Delta

Fri, Oct 23 - Sun, Oct 25

10:45 am - 4:39 pm

PDX

GTF

4h 54m

1 stop

5:19 pm - 10:09 am

GTF

PDX

17h 50m

2 stops

$395Alaska Airlines

Sat, Sep 26 - Wed, Sep 30

10:45 am - 4:17 pm

PDX

GTF

4h 32m

1 stop

4:57 pm - 8:50 pm

GTF

PDX

28h 53m

2 stops

$408Alaska Airlines

Sat, Nov 7 - Wed, Nov 11

11:48 am - 4:39 pm

PDX

GTF

3h 51m

1 stop

5:19 pm - 8:47 pm

GTF

PDX

4h 28m

1 stop

$414Alaska Airlines

Thu, Sep 17 - Sun, Sep 20

7:09 am - 4:39 pm

PDX

GTF

8h 30m

1 stop

5:19 pm - 9:07 am

GTF

PDX

16h 48m

2 stops

$418Alaska Airlines

Sat, Sep 26 - Wed, Sep 30

5:30 am - 5:42 pm

PDX

GTF

11h 12m

2 stops

6:22 pm - 11:44 pm

GTF

PDX

6h 22m

1 stop

$420Delta

Fri, Aug 28 - Fri, Sep 4

Alaska Airlines flights from Portland to Great Falls

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

Alaska Airlines

Sep 26

PDX10:45 amPortland

4h 54m

1 stop

GTF4:39 pmGreat Falls

Sep 30

GTF5:19 pmGreat Falls

5h 42m

1 stop

PDX10:01 pmPortland

$326

Alaska Airlines

Sep 26

PDX7:09 amPortland

8h 30m

1 stop

GTF4:39 pmGreat Falls

Sep 30

GTF5:19 pmGreat Falls

3h 31m

1 stop

PDX7:50 pmPortland

$362

Alaska Airlines

Aug 28

PDX9:32 pmPortland

18h 06m

1 stop

GTF4:38 pmGreat Falls

Sep 4

GTF5:18 pmGreat Falls

15h 53m

1 stop

PDX8:11 amPortland

$382

Delta flights from Portland to Great Falls

Our best Delta deals on Portland to Great Falls flight tickets

Delta

Oct 23

PDX5:05 pmPortland

4h 48m

1 stop

GTF10:53 pmGreat Falls

Oct 25

GTF1:10 pmGreat Falls

6h 07m

1 stop

PDX6:17 pmPortland

$384

Delta

Oct 23

PDX5:05 pmPortland

4h 48m

1 stop

GTF10:53 pmGreat Falls

Oct 25

GTF1:10 pmGreat Falls

7h 48m

2 stops

PDX7:58 pmPortland

$390

Delta

Aug 28

PDX5:30 amPortland

11h 12m

2 stops

GTF5:42 pmGreat Falls

Sep 4

GTF6:22 pmGreat Falls

6h 22m

1 stop

PDX11:44 pmPortland

$420

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 9/26

10:45 am-4:39 pm

1 stop4h 54m

Great Falls

Wed 9/30

5:19 pm-10:01 pm

1 stop5h 42m

$326

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 9/26

7:09 am-4:39 pm

1 stop8h 30m

Great Falls

Wed 9/30

5:19 pm-7:50 pm

1 stop3h 31m

$362

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 8/28

9:32 pm-4:38 pm

1 stop18h 06m

Great Falls

Fri 9/4

5:18 pm-8:11 am

1 stop15h 53m

$382

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 10/23

5:05 pm-10:53 pm

1 stop4h 48m

Great Falls

Sun 10/25

1:10 pm-6:17 pm

1 stop6h 07m

$384

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 10/23

5:05 pm-10:53 pm

1 stop4h 48m

Great Falls

Sun 10/25

1:10 pm-7:58 pm

2 stops7h 48m

$390

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 9/26

10:45 am-4:39 pm

1 stop4h 54m

Great Falls

Wed 9/30

5:19 pm-10:09 am

2 stops17h 50m

$395

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 11/7

10:45 am-4:17 pm

1 stop4h 32m

Great Falls

Wed 11/11

4:57 pm-8:50 pm

2 stops28h 53m

$408

Quickest round-trip

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Thu 9/17

11:48 am-4:39 pm

1 stop3h 51m

Great Falls

Sun 9/20

5:19 pm-8:47 pm

1 stop4h 28m

$414

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 9/26

7:09 am-4:39 pm

1 stop8h 30m

Great Falls

Wed 9/30

5:19 pm-9:07 am

2 stops16h 48m

$418

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 8/28

5:30 am-5:42 pm

2 stops11h 12m

Great Falls

Fri 9/4

6:22 pm-11:44 pm

1 stop6h 22m

$420

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 typical price of a round-trip flight between Portland and Great Falls?

What is the cheapest month to fly to Great Falls?

The month of April is another great option to travel to Great Falls, with average flight prices from Portland averaging around $271.

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 16m
Direct flights	None

The fastest flight from Portland to Great Falls takes 4h 16m

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

Search flight deals

Frequently asked questions about flying from Portland to Great Falls

How far is Portland to Great Falls by plane?
Portland and Great Falls are 556.9 mi apart from one another. 4h 16m 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 June 2026.
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 (57% of total bookings). The next most popular airline is Alaska Airlines (43%).

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 $186	Free Cancellation	Rating 7.9 8,398 reviews		Search Delta flights
Alaska Airlines	PriceFrom $270	Free Cancellation	Rating 7.9 12,463 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.