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

Alaska Airlines and Delta 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 April 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.

$169 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 high for flights on this route. Typical prices usually range from $272 to $271. The lowest price recently found on this route was $351.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

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.

11:59 am - 5:35 pm

PDX

GTF

4h 36m

1 stop

6:15 pm - 10:53 pm

GTF

PDX

5h 38m

1 stop

$351Alaska Airlines

Sat, May 2 - Tue, May 5

6:19 pm - 9:29 am

PDX

GTF

14h 10m

1 stop

10:19 am - 5:24 pm

GTF

PDX

8h 05m

1 stop

$393Multiple Airlines

Thu, Aug 13 - Mon, Aug 17

10:35 am - 5:35 pm

PDX

GTF

6h 00m

1 stop

6:15 pm - 11:14 am

GTF

PDX

17h 59m

2 stops

$396Alaska Airlines

Sat, May 2 - Tue, May 5

6:19 pm - 9:34 am

PDX

GTF

14h 15m

1 stop

10:19 am - 5:24 pm

GTF

PDX

8h 05m

1 stop

$403Multiple Airlines

Thu, Jul 30 - Mon, Aug 3

12:26 pm - 9:34 am

PDX

GTF

20h 08m

2 stops

10:19 am - 5:24 pm

GTF

PDX

8h 05m

1 stop

$413Multiple Airlines

Thu, Jul 30 - Mon, Aug 3

6:19 pm - 9:29 am

PDX

GTF

14h 10m

1 stop

10:19 am - 5:24 pm

GTF

PDX

8h 05m

1 stop

$420Multiple Airlines

Sun, Jul 19 - Mon, Jul 27

9:19 am - 4:29 pm

PDX

GTF

6h 10m

1 stop

5:09 pm - 10:25 pm

GTF

PDX

6h 16m

1 stop

$424Alaska Airlines

Sat, Aug 1 - Tue, Aug 4

6:19 pm - 9:29 am

PDX

GTF

14h 10m

1 stop

10:19 am - 4:57 pm

GTF

PDX

31h 38m

2 stops

$428Multiple Airlines

Sun, Jul 19 - Mon, Jul 27

5:00 am - 4:29 pm

PDX

GTF

10h 29m

1 stop

5:09 pm - 10:25 pm

GTF

PDX

6h 16m

1 stop

$444Alaska Airlines

Thu, Jun 11 - Mon, Jun 15

7:15 am - 5:35 pm

PDX

GTF

33h 20m

2 stops

6:15 pm - 11:14 am

GTF

PDX

17h 59m

2 stops

$457Alaska Airlines

Sat, May 2 - Tue, May 5

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Alaska Airlines flights from Portland to Great Falls

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

Alaska Airlines

May 2

PDX11:59 amPortland

4h 36m

1 stop

GTF5:35 pmGreat Falls

May 5

GTF6:15 pmGreat Falls

5h 38m

1 stop

PDX10:53 pmPortland

$351

Alaska Airlines

May 2

PDX10:35 amPortland

6h 00m

1 stop

GTF5:35 pmGreat Falls

May 5

GTF6:15 pmGreat Falls

17h 59m

2 stops

PDX11:14 amPortland

$396

Alaska Airlines

Jul 31

PDX9:19 amPortland

6h 10m

1 stop

GTF4:29 pmGreat Falls

Aug 5

GTF5:09 pmGreat Falls

6h 16m

1 stop

PDX10:25 pmPortland

$424

Delta flights from Portland to Great Falls

Our best Delta deals on Portland to Great Falls flight tickets

Delta

Aug 5

PDX9:42 amPortland

7h 01m

1 stop

GTF5:43 pmGreat Falls

Sep 13

GTF5:30 amGreat Falls

4h 33m

1 stop

PDX9:03 amPortland

$465

Delta

May 11

PDX5:05 pmPortland

4h 21m

1 stop

GTF10:26 pmGreat Falls

May 18

GTF6:19 pmGreat Falls

6h 25m

1 stop

PDX11:44 pmPortland

$486

Delta

Aug 15

PDX5:05 pmPortland

4h 39m

1 stop

GTF10:44 pmGreat Falls

Aug 17

GTF6:20 pmGreat Falls

6h 33m

2 stops

PDX11:53 pmPortland

$589

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 5/2

11:59 am-5:35 pm

1 stop4h 36m

Great Falls

Tue 5/5

6:15 pm-10:53 pm

1 stop5h 38m

$351

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Thu 8/13

6:19 pm-9:29 am

1 stop14h 10m

Great Falls

Mon 8/17

10:19 am-5:24 pm

1 stop8h 05m

$393

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 5/2

10:35 am-5:35 pm

1 stop6h 00m

Great Falls

Tue 5/5

6:15 pm-11:14 am

2 stops17h 59m

$396

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Thu 7/30

6:19 pm-9:34 am

1 stop14h 15m

Great Falls

Mon 8/3

10:19 am-5:24 pm

1 stop8h 05m

$403

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Thu 7/30

12:26 pm-9:34 am

2 stops20h 08m

Great Falls

Mon 8/3

10:19 am-5:24 pm

1 stop8h 05m

$413

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sun 7/19

6:19 pm-9:29 am

1 stop14h 10m

Great Falls

Mon 7/27

10:19 am-5:24 pm

1 stop8h 05m

$420

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 8/1

9:19 am-4:29 pm

1 stop6h 10m

Great Falls

Tue 8/4

5:09 pm-10:25 pm

1 stop6h 16m

$424

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sun 7/19

6:19 pm-9:29 am

1 stop14h 10m

Great Falls

Mon 7/27

10:19 am-4:57 pm

2 stops31h 38m

$428

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Thu 6/11

5:00 am-4:29 pm

1 stop10h 29m

Great Falls

Mon 6/15

5:09 pm-10:25 pm

1 stop6h 16m

$444

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 5/2

7:15 am-5:35 pm

2 stops33h 20m

Great Falls

Tue 5/5

6:15 pm-11:14 am

2 stops17h 59m

$457

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 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	5h 40m
Direct flights	None

The fastest flight from Portland to Great Falls takes 5h 40m

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. 5h 40m 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 April 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 (74% of total bookings). The next most popular airline is Alaska Airlines (26%).

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 8,406 reviews		Search Delta flights
Alaska Airlines	PriceFrom $270	Free Cancellation	Rating 7.9 12,235 reviews		Search Alaska Airlines flights

Shelby

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.