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 January 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.

$153 Cheap Flights from Portland to Great Falls in 2026

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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.

10:30 am - 5:19 pm

PDX

GTF

5h 49m

1 stop

5:59 pm - 8:47 pm

GTF

PDX

3h 48m

1 stop

$186Alaska Airlines

Tue, Feb 3 - Sat, Feb 7

7:09 am - 5:19 pm

PDX

GTF

9h 10m

2 stops

5:59 pm - 8:47 pm

GTF

PDX

3h 48m

1 stop

$255Alaska Airlines

Tue, Feb 3 - Sat, Feb 7

10:30 am - 5:19 pm

PDX

GTF

5h 49m

1 stop

5:59 pm - 10:46 pm

GTF

PDX

5h 47m

1 stop

$274Alaska Airlines

Tue, Feb 3 - Sat, Feb 7

6:00 am - 12:24 pm

PDX

GTF

5h 24m

1 stop

6:22 pm - 11:54 pm

GTF

PDX

6h 32m

1 stop

$294Delta

Fri, Mar 13 - Mon, Mar 16

6:00 am - 12:24 pm

PDX

GTF

5h 24m

1 stop

1:05 pm - 8:59 pm

GTF

PDX

8h 54m

2 stops

$300Delta

Fri, Mar 13 - Mon, Mar 16

10:30 am - 5:19 pm

PDX

GTF

5h 49m

1 stop

5:59 pm - 4:46 pm

GTF

PDX

23h 47m

2 stops

$323Alaska Airlines

Tue, Feb 3 - Sat, Feb 7

2:41 pm - 5:19 pm

PDX

GTF

25h 38m

2 stops

5:59 pm - 6:18 am

GTF

PDX

13h 19m

2 stops

$333Alaska Airlines

Tue, Feb 3 - Sat, Feb 7

7:15 am - 4:17 pm

PDX

GTF

8h 02m

2 stops

4:57 pm - 9:49 am

GTF

PDX

17h 52m

2 stops

$347Alaska Airlines

Fri, Mar 13 - Mon, Mar 16

12:52 pm - 9:30 am

PDX

GTF

19h 38m

1 stop

10:20 am - 8:58 am

GTF

PDX

23h 38m

2 stops

$402Multiple Airlines

Thu, Mar 19 - Mon, Mar 23

10:05 am - 5:33 pm

PDX

GTF

6h 28m

1 stop

6:20 pm - 11:53 pm

GTF

PDX

6h 33m

1 stop

$404Delta

Fri, Feb 20 - Tue, Feb 24

Alaska Airlines flights from Portland to Great Falls

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

Alaska Airlines

Feb 3

PDX10:30 amPortland

5h 49m

1 stop

GTF5:19 pmGreat Falls

Feb 7

GTF5:59 pmGreat Falls

3h 48m

1 stop

PDX8:47 pmPortland

$186

Alaska Airlines

Feb 3

PDX7:09 amPortland

9h 10m

2 stops

GTF5:19 pmGreat Falls

Feb 7

GTF5:59 pmGreat Falls

3h 48m

1 stop

PDX8:47 pmPortland

$255

Alaska Airlines

Feb 3

PDX10:30 amPortland

5h 49m

1 stop

GTF5:19 pmGreat Falls

Feb 7

GTF5:59 pmGreat Falls

5h 47m

1 stop

PDX10:46 pmPortland

$274

Delta flights from Portland to Great Falls

Our best Delta deals on Portland to Great Falls flight tickets

Delta

May 15

PDX5:05 pmPortland

4h 39m

1 stop

GTF10:44 pmGreat Falls

May 18

GTF6:20 pmGreat Falls

6h 21m

1 stop

PDX11:41 pmPortland

$314

Delta

May 15

PDX5:05 pmPortland

4h 39m

1 stop

GTF10:44 pmGreat Falls

May 18

GTF6:20 pmGreat Falls

6h 33m

2 stops

PDX11:53 pmPortland

$320

Delta

May 14

PDX5:30 amPortland

11h 09m

2 stops

GTF5:39 pmGreat Falls

May 18

GTF6:20 pmGreat Falls

6h 33m

2 stops

PDX11:53 pmPortland

$404

Fly from

Fly to

Route

Depart

Return

Price

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Tue 2/3

10:30 am-5:19 pm

1 stop5h 49m

Great Falls

Sat 2/7

5:59 pm-8:47 pm

1 stop3h 48m

$186

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Tue 2/3

7:09 am-5:19 pm

2 stops9h 10m

Great Falls

Sat 2/7

5:59 pm-8:47 pm

1 stop3h 48m

$255

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Tue 2/3

10:30 am-5:19 pm

1 stop5h 49m

Great Falls

Sat 2/7

5:59 pm-10:46 pm

1 stop5h 47m

$274

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 3/13

6:00 am-12:24 pm

1 stop5h 24m

Great Falls

Mon 3/16

6:22 pm-11:54 pm

1 stop6h 32m

$294

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 3/13

6:00 am-12:24 pm

1 stop5h 24m

Great Falls

Mon 3/16

1:05 pm-8:59 pm

2 stops8h 54m

$300

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Tue 2/3

10:30 am-5:19 pm

1 stop5h 49m

Great Falls

Sat 2/7

5:59 pm-4:46 pm

2 stops23h 47m

$323

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Tue 2/3

2:41 pm-5:19 pm

2 stops25h 38m

Great Falls

Sat 2/7

5:59 pm-6:18 am

2 stops13h 19m

$333

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 3/13

7:15 am-4:17 pm

2 stops8h 02m

Great Falls

Mon 3/16

4:57 pm-9:49 am

2 stops17h 52m

$347

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Thu 3/19

12:52 pm-9:30 am

1 stop19h 38m

Great Falls

Mon 3/23

10:20 am-8:58 am

2 stops23h 38m

$402

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 2/20

10:05 am-5:33 pm

1 stop6h 28m

Great Falls

Tue 2/24

6:20 pm-11:53 pm

1 stop6h 33m

$404

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 cheapest month to fly to Great Falls?

The month of November is another great option to travel to Great Falls, with average flight prices from Portland averaging around $314.

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 30m
Direct flights	None

The fastest flight from Portland to Great Falls takes 4h 30m

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 30m 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 January 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 (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 8,039 reviews		Search Delta flights
Alaska Airlines	PriceFrom $314	Free Cancellation	Rating 7.9 11,698 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.