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$152+ Cheap flights from Great Falls to Portland (GTF - PDX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — PDX
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
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Cheap flight deals from Great Falls to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to Portland (PDX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 18, 2025.

Round-trip from

$240
(Delta)

One-way from

$152
(Delta)

Popular in

January

Cheapest in

October

Average price

$366
From Great Falls to Portland
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One-way flight from Great Falls to Portland
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Highest demand for flights based on searches. 16% potential increase in price ($85 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Great Falls to Portland

Cheapest flights from Great Falls to Portland
Explore the most affordable flight options available from Great Falls to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/276:06 pmGTF - PDX
1 stop5h 29mDelta
Tue 9/25:05 pmPDX - GTF
1 stop4h 40mDelta
Deal found 6/17$240
This Mytrip deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/210:19 pmGTF - PDX
1 stop13h 58mMultiple Airlines
Sun 7/610:34 amPDX - GTF
1 stop7h 38mMultiple Airlines
Deal found 6/16$356
This Mytrip deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/210:19 pmGTF - PDX
2 stops21h 40mAllegiant Air
Sun 7/610:34 amPDX - GTF
1 stop7h 38mAllegiant Air
Deal found 6/16$412
This Alaska Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/24:55 pmGTF - PDX
2 stops21h 25mAlaska Airlines
Fri 7/119:40 amPDX - GTF
1 stop5h 33mAlaska Airlines
Deal found 6/17$520
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/196:25 amGTF - PDX
1 stop16h 51mUnited Airlines
Mon 7/216:43 pmPDX - GTF
1 stop25h 30mUnited Airlines
Deal found 6/16$550

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2025.
Use the filters below to find and compare flights from Great Falls to Portland that are best for you.

Fly from

Great Falls

Fly to

Portland

Route

Depart

Return

Price

Great FallsPortland

GTF - PDX

GTFPDX

Great Falls

Wed 8/27

6:06 pm-10:35 pm

1 stop5h 29m

Portland

Tue 9/2

5:05 pm-10:45 pm

1 stop4h 40m

$240

Great FallsPortland

GTF - PDX

GTFPDX

Great Falls

Wed 7/2

10:19 pm-11:17 am

1 stop13h 58m

Portland

Sun 7/6

10:34 am-7:12 pm

1 stop7h 38m

$356

Great FallsPortland

GTF - PDX

GTFPDX

Great Falls

Wed 7/2

10:19 pm-6:59 pm

2 stops21h 40m

Portland

Sun 7/6

10:34 am-7:12 pm

1 stop7h 38m

$412

Great FallsPortland

GTF - PDX

GTFPDX

Great Falls

Wed 7/2

4:55 pm-1:20 pm

2 stops21h 25m

Portland

Fri 7/11

9:40 am-4:13 pm

1 stop5h 33m

$520

Great FallsPortland

GTF - PDX

GTFPDX

Great Falls

Sat 7/19

6:25 am-10:16 pm

1 stop16h 51m

Portland

Mon 7/21

6:43 pm-9:13 pm

1 stop25h 30m

$550

Great FallsPortland

GTF - PDX

GTFPDX

Great Falls

Fri 8/15

6:06 pm-11:49 pm

1 stop6h 43m

$152

Great FallsPortland

GTF - PDX

GTFPDX

Great Falls

Sun 8/10

8:02 pm-5:41 pm

2 stops22h 39m

$195

Great FallsPortland

GTF - PDX

GTFPDX

Great Falls

Thu 8/14

4:55 pm-6:20 am

1 stop14h 25m

$218

Great FallsPortland

GTF - PDX

GTFPDX

Great Falls

Sun 8/10

6:25 am-10:29 pm

3 stops41h 04m

$517

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

Best time to book a flight from Great Falls to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Great Falls with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Great Falls to Portland

What is the cheapest month to book a flight from Great Falls to Portland?

Currently, November is the cheapest month in which you can book a flight from Great Falls to Portland (average of $277). Flying from Great Falls to Portland in March is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Portland by month

Plan your trip to Portland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portland ranges from 0.7 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Portland when rainfall is around 0.7 in.

Temperature in Portland by month

Plan your trip to Portland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated June 18, 2025.
See what other customers who have flown with Alaska Airlines, Delta and United Airlines from Great Falls to Portland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,810 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Allegiant Air
7.3
Good
722 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Great Falls to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Great Falls to Portland round-trip?

    Currently priced at $240, Delta will fly you from Great Falls to Portland and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Allegiant Air and Alaska Airlines - these airlines can fly you to your destination from $412 and $520, respectively. Delta is 42% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Great Falls to Portland one-way?

    One-way options have recently been found by users for as low as $152 on Delta. Other airlines that offer cheap prices include Allegiant Air from $195 and Alaska Airlines from $218 one-way.

  • Can I find deals for flights from Great Falls to Portland that include hotel bookings?

    Yes. In addition to deals on Great Falls to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Great Falls to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Great Falls to Portland.

  • Can I find deals for business class flights from Great Falls to Portland?

    Yes. Cheapflights offers flight deals from Great Falls to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Great Falls to Portland?

    Currently, November is the cheapest month in which you can book a flight from Great Falls to Portland (average of $277). Flying from Great Falls to Portland in March is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Great Falls?

Book flights to Great Falls if you plan to visit one of these locations
Seaside
Vancouver
Beaverton
Clackamas
Lincoln City
McMinnville
Lake Oswego
Hillsboro
Gresham
Astoria
Long Beach
Cannon Beach
Tigard
Longview
Hood River
Depoe Bay
Woodburn
Stevenson
Pacific City
Troutdale

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Alternative routes for Great Falls to Portland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Great Falls to Portland

Discover the top 2 airlines that operate flights from Great Falls to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$264Average$397FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$317Average$546FlexibilityNo cancel feeOn-time75%

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