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$199+ Cheap flights from Portland to Great Falls (PDX - GTF)

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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — GTF
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Portland to Great Falls

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Great Falls (GTF). 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 August 14, 2025.

Round-trip from

$280
(Delta)

One-way from

$199
(Alaska Airlines)

Popular in

December

Cheapest in

April

Average price

$441
From Portland to Great Falls
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One-way flight from Portland to Great Falls
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Highest demand for flights based on searches. 9% potential increase in price ($44 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Portland to Great Falls

Cheapest flights from Portland to Great Falls
Explore the most affordable flight options available from Portland to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Delta deal was found by Cheapflights users on 8/14. 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.
Sat 9/135:10 pmPDX - GTF
1 stop4h 18mDelta
Sat 9/206:11 pmGTF - PDX
1 stop5h 27mDelta
Deal found 8/14$280
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1312:37 pmPDX - GTF
1 stop7h 55mMultiple Airlines
Mon 10/2010:22 pmGTF - PDX
1 stop22h 14mMultiple Airlines
Deal found 8/13$290
This Alaska Airlines deal was found by Cheapflights users on 8/13. 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.
Tue 10/146:00 amPDX - GTF
1 stop10h 35mAlaska Airlines
Mon 10/206:15 pmGTF - PDX
1 stop13h 05mAlaska Airlines
Deal found 8/13$308
This Delta deal was found by Cheapflights users on 8/13. 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.
Tue 10/145:00 pmPDX - GTF
1 stop5h 06mDelta
Mon 10/201:08 pmGTF - PDX
1 stop6h 01mDelta
Deal found 8/13$311
This Alaska Airlines deal was found by Cheapflights users on 8/13. 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.
Mon 10/138:50 pmPDX - GTF
1 stop19h 45mAlaska Airlines
Mon 10/206:15 pmGTF - PDX
2 stops20h 30mAlaska Airlines
Deal found 8/13$333
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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 10/810:00 pmPDX - GTF
1 stop18h 35mAlaska Airlines
Mon 10/136:15 pmGTF - PDX
1 stop15h 45mAlaska Airlines
Deal found 8/12$338
This Delta deal was found by Cheapflights users on 8/12. 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 10/85:30 amPDX - GTF
2 stops10h 59mDelta
Mon 10/136:09 pmGTF - PDX
1 stop6h 34mDelta
Deal found 8/12$350

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Great Falls 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 August 14, 2025.
Use the filters below to find and compare flights from Portland to Great Falls that are best for you.

Fly from

Portland

Fly to

Great Falls

Route

Depart

Return

Price

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 9/13

5:10 pm-10:28 pm

1 stop4h 18m

Great Falls

Sat 9/20

6:11 pm-10:38 pm

1 stop5h 27m

$280

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Mon 10/13

12:37 pm-9:32 pm

1 stop7h 55m

Great Falls

Mon 10/20

10:22 pm-7:36 pm

1 stop22h 14m

$290

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Tue 10/14

6:00 am-5:35 pm

1 stop10h 35m

Great Falls

Mon 10/20

6:15 pm-6:20 am

1 stop13h 05m

$308

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Tue 10/21

5:40 am-12:28 pm

1 stop5h 48m

Great Falls

Fri 10/24

6:09 pm-11:43 pm

1 stop6h 34m

$311

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Tue 10/14

5:00 pm-11:06 pm

1 stop5h 06m

Great Falls

Mon 10/20

1:08 pm-6:09 pm

1 stop6h 01m

$311

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Mon 9/15

6:05 am-3:49 pm

1 stop8h 44m

$199

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 8/30

5:35 am-11:03 am

1 stop4h 28m

$250

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Thu 8/28

5:35 am-11:03 am

1 stop4h 28m

$250

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 8/29

5:05 pm-10:45 pm

1 stop4h 40m

$250

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sat 8/30

1:45 pm-1:37 pm

2 stops22h 52m

$380

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 12 results
1
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Best time to book a flight from Portland to Great Falls

Have a flexible travel schedule? Discover the best time to fly to Great Falls from Portland 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 Portland to Great Falls

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

Currently, January is the cheapest month in which you can book a flight from Portland to Great Falls (average of $367). Flying from Portland to Great Falls in July is currently the most expensive (average of $574). 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.

What is the cheapest time of day to fly from PDX to GTF?

Find hourly flight availability from Portland to Great Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

It’s optimal to fly from Portland to Great Falls at noon. By choosing this option you can save up to 8% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing Great Falls

Get insights into the airlines that provide service to Great Falls. 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 Great Falls. Reviews last updated August 14, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines and Delta from Portland to Great Falls to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)

Related info for your journey

Find useful and relevant information for your journey from Portland to Great Falls. 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 Portland to Great Falls round-trip?

    Alaska Airlines, at $233, was found to be the cheapest airline from Portland to Great Falls. An alternate airline flying to your destination would be Delta. Alaska Airlines is priced at 43% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Great Falls 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 Portland to Great Falls?

    Currently, January is the cheapest month in which you can book a flight from Portland to Great Falls (average of $367). Flying from Portland to Great Falls in July is currently the most expensive (average of $574). 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
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Top 2 airlines flying from Portland to Great Falls

Discover the top 2 airlines that operate flights from Portland to Great Falls. 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$233Average$434FlexibilityNo cancel feeOn-time75%
DeltaCheapest$291Average$374FlexibilityNo cancel feeOn-timeN/A

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