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Cheap flights from Great Falls to Portland from $227

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to Portland departing on 10/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Great Falls to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
5:19 pm - 7:50 pmGTF  Great Falls-PDX Portland
3h 31m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
5:41 pm - 4:39 pmPDX  Portland-GTF Great Falls
21h 58m1 stop Seattle/Tacoma Intl
$392Alaska Airlines
Sat, Sep 26 - Tue, Sep 29
Alaska Airlines Logo
5:19 pm - 7:50 pmGTF  Great Falls-PDX Portland
3h 31m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
8:09 am - 4:35 pmPDX  Portland-GTF Great Falls
7h 26m1 stop Seattle/Tacoma Intl
$392Alaska Airlines
Wed, Sep 30 - Sat, Oct 3
Alaska Airlines Logo
5:19 pm - 2:30 pmGTF  Great Falls-PDX Portland
22h 11m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
8:09 am - 4:35 pmPDX  Portland-GTF Great Falls
7h 26m1 stop Seattle/Tacoma Intl
$392Alaska Airlines
Tue, Sep 29 - Sat, Oct 3
Alaska Airlines Logo
5:19 pm - 7:50 pmGTF  Great Falls-PDX Portland
3h 31m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
8:14 am - 4:39 pmPDX  Portland-GTF Great Falls
7h 25m1 stop Seattle/Tacoma Intl
$392Alaska Airlines
Sat, Sep 26 - Wed, Sep 30
Delta Logo
1:15 pm - 8:02 pmGTF  Great Falls-PDX Portland
7h 47m2 stops Salt Lake City Seattle/Tacoma Intl
Delta Logo
7:00 am - 5:41 pmPDX  Portland-GTF Great Falls
9h 41m2 stops Seattle/Tacoma Intl Salt Lake City
$393Delta
Sat, Sep 26 - Sat, Oct 3
Delta Logo
1:18 pm - 10:42 pmGTF  Great Falls-PDX Portland
10h 24m2 stops Salt Lake City Seattle/Tacoma Intl
Delta Logo
5:30 am - 5:47 pmPDX  Portland-GTF Great Falls
11h 17m2 stops Seattle/Tacoma Intl Salt Lake City
$393Delta
Sat, Oct 10 - Wed, Oct 14
Delta Logo
6:21 pm - 11:46 amGTF  Great Falls-PDX Portland
18h 25m2 stops Salt Lake City Seattle/Tacoma Intl
Delta Logo
7:00 am - 5:41 pmPDX  Portland-GTF Great Falls
9h 41m2 stops Seattle/Tacoma Intl Salt Lake City
$393Delta
Tue, Sep 29 - Sat, Oct 3
Delta Logo
6:21 pm - 8:43 amGTF  Great Falls-PDX Portland
15h 22m2 stops Salt Lake City Seattle/Tacoma Intl
Delta Logo
7:00 am - 5:41 pmPDX  Portland-GTF Great Falls
9h 41m2 stops Seattle/Tacoma Intl Salt Lake City
$403Delta
Sat, Sep 26 - Sat, Oct 3
United Airlines Logo
6:15 am - 8:33 pmGTF  Great Falls-PDX Portland
15h 18m2 stops Denver Intl San Francisco
United Airlines Logo
3:30 pm - 1:29 pmPDX  Portland-GTF Great Falls
20h 59m2 stops San Francisco Denver Intl
$745United Airlines
Wed, Jan 13 - Sat, Jan 16
Multiple Airlines Logo
5:19 pm - 7:50 pmGTF  Great Falls-PDX Portland
3h 31m1 stop Seattle/Tacoma Intl
Multiple Airlines Logo
2:30 pm - 4:39 pmPDX  Portland-GTF Great Falls
25h 09m2 stops Calgary Seattle/Tacoma Intl
$907Multiple Airlines
Thu, Sep 24 - Wed, Sep 30

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Delta flights from Great Falls to Portland

Our best Delta deals on Great Falls to Portland flight tickets
Delta
Sep 26
GTF5:40 amGreat Falls
7h 06m
2 stops
PDX11:46 amPortland
Sep 30
PDX5:30 amPortland
11h 11m
2 stops
GTF5:41 pmGreat Falls
$393
Delta
Sep 25
GTF6:21 pmGreat Falls
15h 22m
2 stops
PDX8:43 amPortland
Sep 30
PDX5:30 amPortland
11h 11m
2 stops
GTF5:41 pmGreat Falls
$403
Delta
Sep 26
GTF6:21 pmGreat Falls
5h 12m
1 stop
PDX10:33 pmPortland
Sep 29
PDX8:44 pmPortland
14h 51m
2 stops
GTF12:35 pmGreat Falls
$410

Alaska Airlines flights from Great Falls to Portland

Our best Alaska Airlines deals on Great Falls to Portland flight tickets
Alaska Airlines
Sep 26
GTF5:19 pmGreat Falls
3h 31m
1 stop
PDX7:50 pmPortland
Oct 3
PDX7:09 amPortland
8h 26m
1 stop
GTF4:35 pmGreat Falls
$392
Alaska Airlines
Sep 25
GTF5:19 pmGreat Falls
15h 59m
1 stop
PDX8:18 amPortland
Sep 29
PDX9:32 pmPortland
18h 07m
1 stop
GTF4:39 pmGreat Falls
$402
Alaska Airlines
Sep 22
GTF5:19 pmGreat Falls
24h 31m
1 stop
PDX4:50 pmPortland
Sep 26
PDX10:45 amPortland
4h 54m
1 stop
GTF4:39 pmGreat Falls
$409

momondo Fare Finder

 
Customize your flight search to find flights from Great Falls to Portland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 13, 2026.
Use the filters below to find and compare flights from Great Falls to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Great FallsPortland

GTF Great Falls - PDX Portland

GTFPDX

Great Falls

Sat 9/26

5:19 pm-7:50 pm

1 stop3h 31m

Portland

Tue 9/29

5:41 pm-4:39 pm

1 stop21h 58m

$392

Great FallsPortland

GTF Great Falls - PDX Portland

GTFPDX

Great Falls

Wed 9/30

5:19 pm-7:50 pm

1 stop3h 31m

Portland

Sat 10/3

8:09 am-4:35 pm

1 stop7h 26m

$392

Great FallsPortland

GTF Great Falls - PDX Portland

GTFPDX

Great Falls

Tue 9/29

5:19 pm-2:30 pm

1 stop22h 11m

Portland

Sat 10/3

8:09 am-4:35 pm

1 stop7h 26m

$392
Quickest round-trip

Great FallsPortland

GTF Great Falls - PDX Portland

GTFPDX

Great Falls

Sat 9/26

5:19 pm-7:50 pm

1 stop3h 31m

Portland

Wed 9/30

8:14 am-4:39 pm

1 stop7h 25m

$392

Great FallsPortland

GTF Great Falls - PDX Portland

GTFPDX

Great Falls

Sat 9/26

1:15 pm-8:02 pm

2 stops7h 47m

Portland

Sat 10/3

7:00 am-5:41 pm

2 stops9h 41m

$393

Great FallsPortland

GTF Great Falls - PDX Portland

GTFPDX

Great Falls

Sat 10/10

1:18 pm-10:42 pm

2 stops10h 24m

Portland

Wed 10/14

5:30 am-5:47 pm

2 stops11h 17m

$393

Great FallsPortland

GTF Great Falls - PDX Portland

GTFPDX

Great Falls

Tue 9/29

6:21 pm-11:46 am

2 stops18h 25m

Portland

Sat 10/3

7:00 am-5:41 pm

2 stops9h 41m

$393

Great FallsPortland

GTF Great Falls - PDX Portland

GTFPDX

Great Falls

Sat 9/26

6:21 pm-8:43 am

2 stops15h 22m

Portland

Sat 10/3

7:00 am-5:41 pm

2 stops9h 41m

$403

Great FallsPortland

GTF Great Falls - PDX Portland

GTFPDX

Great Falls

Wed 1/13

6:15 am-8:33 pm

2 stops15h 18m

Portland

Sat 1/16

3:30 pm-1:29 pm

2 stops20h 59m

$745

Great FallsPortland

GTF Great Falls - PDX Portland

GTFPDX

Great Falls

Thu 9/24

5:19 pm-7:50 pm

1 stop3h 31m

Portland

Wed 9/30

2:30 pm-4:39 pm

2 stops25h 09m

$907

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Great Falls to Portland

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

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

Prices are currently low for flights on this route.

Typical prices usually range from $449 to $515.
The lowest price recently found on this route was $392.

What is the cheapest month to fly to Portland?

The cheapest month to fly to Portland from Great Falls is in March. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in March, then you should wait until May to fly from Great Falls, when ticket prices are also cheap, with an average price of $284.

Can stopping save me money on Great Falls to Portland flights?

You could potentially save up to 40% on your flight if you consider stops on a Great Falls to Portland flight.

When to book flights from Great Falls to Portland

Are you open to changing your travel dates? Check out the ideal times to fly from Great Falls to Portland according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Great Falls to Portland (GTF to PDX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Great Falls to Portland

Fastest flight time

4h 07m

Direct flights

None
The fastest flight from Great Falls to Portland takes 4h 07m
There are no direct flights from Great Falls to Portland. There are no popular flight routes from Great Falls to Portland.
Search flight deals

Frequently asked questions about flying from Great Falls to Portland

  • How far is Great Falls to Portland by plane?

    Great Falls and Portland are 556.9 mi apart from one another. A reasonable flight in good conditions will take 4h 07m.

  • When did momondo last update prices for flights from Great Falls Airport to Portland Airport?

    Prices for flights from Great Falls Airport to Portland Airport refresh daily.

  • How many operators does momondo search for flights from Great Falls Airport to Portland Airport?

  • How old do you have to be to fly from Great Falls Airport to Portland Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Great Falls Airport to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Great Falls to Portland?

Best airlines flying from Great Falls to Portland

Compare and see reviews for airlines that fly from Great Falls to Portland with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $222Free CancellationRating
7.8
8,504 reviews
Search Delta flights
Alaska AirlinesPriceFrom $284Free CancellationRating
7.9
12,803 reviews
Search Alaska Airlines flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Lincoln City
Seaside
Vancouver
Cannon Beach
Salem
Astoria
Long Beach
Beaverton
Rockaway Beach
Hillsboro
Tigard
Depoe Bay
Longview
Hood River
Newberg
Clackamas
Troutdale
Gresham
Kelso
Wilsonville

Why use momondo?

Why should I use momondo to find a flight deal from Great Falls to Portland?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Portland from Great Falls.

Can I find flights from Great Falls to Portland with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Portland from Great Falls with this policy.

How can momondo help me find flights from Great Falls to Portland?

momondo helps you find the best flight between Great Falls and Portland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Great Falls to Portland right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Portland, momondo offers a useful price alert feature which will track prices for flights to Portland from Great Falls and alert you when they change.

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