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 September 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.

$237 Cheap Flights from Portland to Great Falls in 2026/27

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.

8:30 am - 3:28 pmPDX Portland-GTF Great Falls

5h 58m1 stop Seattle/Tacoma Intl

4:08 pm - 11:53 pmGTF Great Falls-PDX Portland

8h 45m1 stop Seattle/Tacoma Intl

$412Alaska Airlines

Sat, Jan 30 - Tue, Feb 2

10:31 am - 3:28 pmPDX Portland-GTF Great Falls

3h 57m1 stop Seattle/Tacoma Intl

4:08 pm - 10:51 amGTF Great Falls-PDX Portland

19h 43m2 stops Seattle/Tacoma Intl San Francisco

$431Alaska Airlines

Sat, Jan 30 - Tue, Feb 2

7:08 am - 4:30 pmPDX Portland-GTF Great Falls

8h 22m1 stop Seattle/Tacoma Intl

5:10 pm - 11:54 pmGTF Great Falls-PDX Portland

7h 44m1 stop Seattle/Tacoma Intl

$432Alaska Airlines

Sat, Nov 14 - Wed, Nov 18

8:30 am - 3:28 pmPDX Portland-GTF Great Falls

5h 58m1 stop Seattle/Tacoma Intl

4:08 pm - 11:53 pmGTF Great Falls-PDX Portland

8h 45m1 stop Seattle/Tacoma Intl

$432Alaska Airlines

Sat, Jan 30 - Tue, Feb 2

8:08 am - 4:30 pmPDX Portland-GTF Great Falls

7h 22m1 stop Seattle/Tacoma Intl

5:10 pm - 11:54 pmGTF Great Falls-PDX Portland

7h 44m1 stop Seattle/Tacoma Intl

$432Alaska Airlines

Sat, Nov 14 - Tue, Nov 17

5:45 am - 12:41 pmPDX Portland-GTF Great Falls

5h 56m1 stop Salt Lake City

6:19 pm - 11:51 pmGTF Great Falls-PDX Portland

6h 32m1 stop Salt Lake City

$434Delta

Tue, Nov 17 - Tue, Nov 17

5:45 am - 12:41 pmPDX Portland-GTF Great Falls

5h 56m1 stop Salt Lake City

6:19 pm - 11:51 pmGTF Great Falls-PDX Portland

6h 32m1 stop Salt Lake City

$434Delta

Wed, Nov 18 - Wed, Nov 18

12:04 pm - 4:30 pmPDX Portland-GTF Great Falls

3h 26m1 stop Seattle/Tacoma Intl

5:10 pm - 11:00 pmGTF Great Falls-PDX Portland

6h 50m1 stop Seattle/Tacoma Intl

$434Alaska Airlines

Tue, Nov 17 - Wed, Nov 18

5:15 pm - 10:40 pmPDX Portland-GTF Great Falls

4h 25m1 stop Salt Lake City

6:27 pm - 10:18 pmGTF Great Falls-PDX Portland

4h 51m1 stop Salt Lake City

$434Delta

Wed, Oct 28 - Wed, Nov 4

5:24 pm - 10:30 pmPDX Portland-GTF Great Falls

4h 06m1 stop Salt Lake City

5:30 am - 10:52 amGTF Great Falls-PDX Portland

6h 22m2 stops Salt Lake City Seattle/Tacoma Intl

$440Delta

Tue, Nov 17 - Wed, Nov 18

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Delta flights from Portland to Great Falls

Our best Delta deals on Portland to Great Falls flight tickets

Delta

Nov 17

PDX5:45 amPortland

5h 56m

1 stop

GTF12:41 pmGreat Falls

Nov 17

GTF6:19 pmGreat Falls

6h 32m

1 stop

PDX11:51 pmPortland

$434

Delta

Oct 28

PDX7:10 amPortland

9h 37m

2 stops

GTF5:47 pmGreat Falls

Nov 4

GTF6:27 pmGreat Falls

4h 51m

1 stop

PDX10:18 pmPortland

$440

Delta

Nov 17

PDX5:30 amPortland

11h 09m

2 stops

GTF5:39 pmGreat Falls

Nov 18

GTF1:21 pmGreat Falls

11h 15m

2 stops

PDX11:36 pmPortland

$445

Alaska Airlines flights from Portland to Great Falls

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

Alaska Airlines

Jan 30

PDX8:30 amPortland

5h 58m

1 stop

GTF3:28 pmGreat Falls

Feb 2

GTF4:08 pmGreat Falls

8h 45m

1 stop

PDX11:53 pmPortland

$412

Alaska Airlines

Jan 30

PDX10:31 amPortland

3h 57m

1 stop

GTF3:28 pmGreat Falls

Feb 2

GTF4:08 pmGreat Falls

19h 43m

2 stops

PDX10:51 amPortland

$431

Alaska Airlines

Jan 30

PDX8:30 amPortland

5h 58m

1 stop

GTF3:28 pmGreat Falls

Feb 2

GTF4:08 pmGreat Falls

8h 45m

1 stop

PDX11:53 pmPortland

$432

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandGreat Falls

PDX Portland - GTF Great Falls

PDXGTF

Portland

Sat 1/30

8:30 am-3:28 pm

1 stop5h 58m

Great Falls

Tue 2/2

4:08 pm-11:53 pm

1 stop8h 45m

$412

PortlandGreat Falls

PDX Portland - GTF Great Falls

PDXGTF

Portland

Sat 1/30

10:31 am-3:28 pm

1 stop3h 57m

Great Falls

Tue 2/2

4:08 pm-10:51 am

2 stops19h 43m

$431

PortlandGreat Falls

PDX Portland - GTF Great Falls

PDXGTF

Portland

Sat 11/14

7:08 am-4:30 pm

1 stop8h 22m

Great Falls

Wed 11/18

5:10 pm-11:54 pm

1 stop7h 44m

$432

PortlandGreat Falls

PDX Portland - GTF Great Falls

PDXGTF

Portland

Sat 1/30

8:30 am-3:28 pm

1 stop5h 58m

Great Falls

Tue 2/2

4:08 pm-11:53 pm

1 stop8h 45m

$432

PortlandGreat Falls

PDX Portland - GTF Great Falls

PDXGTF

Portland

Sat 11/14

8:08 am-4:30 pm

1 stop7h 22m

Great Falls

Tue 11/17

5:10 pm-11:54 pm

1 stop7h 44m

$432

PortlandGreat Falls

PDX Portland - GTF Great Falls

PDXGTF

Portland

Tue 11/17

5:45 am-12:41 pm

1 stop5h 56m

Great Falls

Tue 11/17

6:19 pm-11:51 pm

1 stop6h 32m

$434

PortlandGreat Falls

PDX Portland - GTF Great Falls

PDXGTF

Portland

Wed 11/18

5:45 am-12:41 pm

1 stop5h 56m

Great Falls

Wed 11/18

6:19 pm-11:51 pm

1 stop6h 32m

$434

PortlandGreat Falls

PDX Portland - GTF Great Falls

PDXGTF

Portland

Tue 11/17

12:04 pm-4:30 pm

1 stop3h 26m

Great Falls

Wed 11/18

5:10 pm-11:00 pm

1 stop6h 50m

$434

Quickest round-trip

PortlandGreat Falls

PDX Portland - GTF Great Falls

PDXGTF

Portland

Wed 10/28

5:15 pm-10:40 pm

1 stop4h 25m

Great Falls

Wed 11/4

6:27 pm-10:18 pm

1 stop4h 51m

$434

PortlandGreat Falls

PDX Portland - GTF Great Falls

PDXGTF

Portland

Tue 11/17

5:24 pm-10:30 pm

1 stop4h 06m

Great Falls

Wed 11/18

5:30 am-10:52 am

2 stops6h 22m

$440

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?

Prices are currently low for flights on this route.

Typical prices usually range from $418 to $480.
The lowest price recently found on this route was $412.

What is the cheapest month to fly to Great Falls?

The month of February is another great option to travel to Great Falls, with average flight prices from Portland averaging around $275.

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

Best Price Found	$237
Fastest flight time	4h 27m
Direct flights	None

The best one-way flight to Great Falls from Portland in the past 72 hours is $237. The best round-trip flight deal from Portland to Great Falls found on momondo in the last 72 hours is $412.

The fastest flight from Portland to Great Falls takes 4h 27m

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 27m 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 September 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 Alaska Airlines (59% of total bookings). The next most popular airline is Delta (41%).

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 $246	Free Cancellation	Rating 7.8 8,590 reviews		Search Delta flights
Alaska Airlines	PriceFrom $270	Free Cancellation	Rating 7.9 12,959 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.