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

Delta is the most popular carrier 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 July 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.

$205 Cheap Flights from Portland to Great Falls in 2026

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.

6:20 am - 4:38 pm

PDX

GTF

9h 18m

1 stop

5:19 pm - 10:01 pm

GTF

PDX

5h 42m

1 stop

$362Alaska Airlines

Wed, Sep 2 - Wed, Sep 16

9:30 am - 4:38 pm

PDX

GTF

6h 08m

1 stop

5:25 pm - 10:01 pm

GTF

PDX

5h 36m

1 stop

$362Alaska Airlines

Sat, Aug 29 - Sat, Sep 5

5:07 am - 4:38 pm

PDX

GTF

10h 31m

1 stop

5:19 pm - 10:01 pm

GTF

PDX

5h 42m

1 stop

$362Alaska Airlines

Wed, Sep 2 - Wed, Sep 16

9:30 am - 4:38 pm

PDX

GTF

6h 08m

1 stop

5:19 pm - 7:50 pm

GTF

PDX

3h 31m

1 stop

$362Alaska Airlines

Wed, Sep 2 - Wed, Sep 16

5:45 am - 12:28 pm

PDX

GTF

5h 43m

1 stop

6:21 pm - 11:54 pm

GTF

PDX

6h 33m

2 stops

$396Delta

Wed, Sep 2 - Wed, Sep 16

5:45 am - 12:28 pm

PDX

GTF

5h 43m

1 stop

1:08 pm - 10:38 pm

GTF

PDX

10h 30m

2 stops

$396Delta

Sat, Aug 29 - Sat, Sep 5

5:08 pm - 10:38 pm

PDX

GTF

4h 30m

1 stop

1:08 pm - 10:02 pm

GTF

PDX

9h 54m

2 stops

$396Delta

Tue, Aug 25 - Tue, Sep 1

6:49 pm - 9:29 am

PDX

GTF

13h 40m

1 stop

9:18 pm - 4:36 pm

GTF

PDX

20h 18m

2 stops

$598Multiple Airlines

Sun, Aug 9 - Thu, Aug 13

3:43 pm - 9:12 pm

PDX

GTF

28h 29m

2 stops

6:15 am - 10:45 pm

GTF

PDX

17h 30m

2 stops

$645United Airlines

Wed, Sep 2 - Wed, Sep 16

5:00 am - 9:12 pm

PDX

GTF

15h 12m

1 stop

6:15 am - 3:05 pm

GTF

PDX

9h 50m

1 stop

$659United Airlines

Thu, Aug 20 - Sat, Aug 22

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United Airlines flights from Portland to Great Falls

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

United Airlines

Sep 2

PDX3:43 pmPortland

28h 29m

2 stops

GTF9:12 pmGreat Falls

Sep 16

GTF6:15 amGreat Falls

17h 30m

2 stops

PDX10:45 pmPortland

$645

United Airlines

Aug 20

PDX5:00 amPortland

15h 12m

1 stop

GTF9:12 pmGreat Falls

Aug 22

GTF6:15 amGreat Falls

9h 50m

1 stop

PDX3:05 pmPortland

$659

United Airlines

Aug 20

PDX5:00 amPortland

15h 12m

1 stop

GTF9:12 pmGreat Falls

Aug 22

GTF6:15 amGreat Falls

17h 30m

2 stops

PDX10:45 pmPortland

$665

Alaska Airlines flights from Portland to Great Falls

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

Alaska Airlines

Sep 2

PDX6:20 amPortland

9h 18m

1 stop

GTF4:38 pmGreat Falls

Sep 16

GTF5:19 pmGreat Falls

5h 42m

1 stop

PDX10:01 pmPortland

$362

Alaska Airlines

Nov 14

PDX7:05 amPortland

8h 12m

1 stop

GTF4:17 pmGreat Falls

Nov 17

GTF4:57 pmGreat Falls

19h 22m

1 stop

PDX11:19 amPortland

$372

Alaska Airlines

Sep 6

PDX9:20 amPortland

6h 25m

1 stop

GTF4:45 pmGreat Falls

Sep 12

GTF5:19 pmGreat Falls

3h 31m

1 stop

PDX7:50 pmPortland

$382

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Wed 9/2

6:20 am-4:38 pm

1 stop9h 18m

Great Falls

Wed 9/16

5:19 pm-10:01 pm

1 stop5h 42m

$362

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 8/29

9:30 am-4:38 pm

1 stop6h 08m

Great Falls

Sat 9/5

5:25 pm-10:01 pm

1 stop5h 36m

$362

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Wed 9/2

5:07 am-4:38 pm

1 stop10h 31m

Great Falls

Wed 9/16

5:19 pm-10:01 pm

1 stop5h 42m

$362

Quickest round-trip

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Wed 9/2

9:30 am-4:38 pm

1 stop6h 08m

Great Falls

Wed 9/16

5:19 pm-7:50 pm

1 stop3h 31m

$362

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Wed 9/2

5:45 am-12:28 pm

1 stop5h 43m

Great Falls

Wed 9/16

6:21 pm-11:54 pm

2 stops6h 33m

$396

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 8/29

5:45 am-12:28 pm

1 stop5h 43m

Great Falls

Sat 9/5

1:08 pm-10:38 pm

2 stops10h 30m

$396

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Tue 8/25

5:08 pm-10:38 pm

1 stop4h 30m

Great Falls

Tue 9/1

1:08 pm-10:02 pm

2 stops9h 54m

$396

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sun 8/9

6:49 pm-9:29 am

1 stop13h 40m

Great Falls

Thu 8/13

9:18 pm-4:36 pm

2 stops20h 18m

$598

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Wed 9/2

3:43 pm-9:12 pm

2 stops28h 29m

Great Falls

Wed 9/16

6:15 am-10:45 pm

2 stops17h 30m

$645

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Thu 8/20

5:00 am-9:12 pm

1 stop15h 12m

Great Falls

Sat 8/22

6:15 am-3:05 pm

1 stop9h 50m

$659

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 $398 to $563.
The lowest price recently found on this route was $362.

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

Fastest flight time	4h 21m
Direct flights	None

The fastest flight from Portland to Great Falls takes 4h 21m

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 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 July 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 (57% of total bookings). The next most popular airline is Delta (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 7.8 8,480 reviews		Search Delta flights
Alaska Airlines	PriceFrom $270	Free Cancellation	Rating 7.9 12,721 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.