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$180+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — GTF
Oct 25 — Nov 11
Sat 10/25
Sat 11/1
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 September 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$242
(Alaska Airlines)

One-way from

$180
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$374
Provider with most accurate pricing for Portland-Great Falls flight deals.
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Provider most trusted by Cheapflights users for Portland-Great Falls flights.
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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 ($42 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 September 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 September 25, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/24. 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 10/86:00 pmPDX - GTF
1 stop22h 35mAlaska Airlines
Wed 10/156:15 pmGTF - PDX
1 stop5h 30mAlaska Airlines
Deal found 9/24$400
This Delta deal was found by Cheapflights users on 9/24. 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.
Thu 10/99:58 amPDX - GTF
1 stop6h 31mDelta
Mon 10/136:09 pmGTF - PDX
1 stop6h 34mDelta
Deal found 9/24$554
This United Airlines deal was found by Cheapflights users on 9/24. 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.
Thu 10/95:30 amPDX - GTF
3 stops30h 56mUnited Airlines
Mon 10/132:31 pmGTF - PDX
1 stop19h 58mUnited Airlines
Deal found 9/24$686
This United Airlines deal was found by Cheapflights users on 9/24. 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.
Fri 10/35:00 amPDX - GTF
1 stop15h 11mUnited Airlines
Tue 10/77:00 amGTF - PDX
1 stop27h 29mUnited Airlines
Deal found 9/24$695
This Delta deal was found by Cheapflights users on 9/25. 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.
Fri 10/35:10 pmPDX - GTF
1 stop4h 18mDelta
Tue 10/71:08 pmGTF - PDX
1 stop6h 01mDelta
Deal found 9/25$748
This Delta deal was found by Cheapflights users on 9/24. 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 10/81:30 pmPDX - GTF
2 stops8h 36mDelta
Wed 10/151:08 pmGTF - PDX
2 stops7h 11mDelta
Deal found 9/24$799

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 September 25, 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

Wed 10/8

6:00 pm-5:35 pm

1 stop22h 35m

Great Falls

Wed 10/15

6:15 pm-10:45 pm

1 stop5h 30m

$400

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Thu 10/9

9:58 am-5:29 pm

1 stop6h 31m

Great Falls

Mon 10/13

6:09 pm-11:43 pm

1 stop6h 34m

$554

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Thu 10/9

5:30 am-1:26 pm

3 stops30h 56m

Great Falls

Mon 10/13

2:31 pm-9:29 am

1 stop19h 58m

$686

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Wed 10/8

1:30 pm-11:06 pm

2 stops8h 36m

Great Falls

Wed 10/15

1:08 pm-7:19 pm

2 stops7h 11m

$799

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Wed 10/15

12:43 pm-12:15 pm

2 stops22h 32m

$180

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Tue 10/14

12:43 pm-12:15 pm

3 stops46h 32m

$191

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Wed 10/15

6:00 pm-5:35 pm

1 stop22h 35m

$210

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Tue 10/14

5:00 pm-11:06 pm

1 stop5h 06m

$260

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Wed 10/15

3:50 pm-1:26 pm

3 stops20h 36m

$366

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/23

Compare providers for flights from Portland to Great Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Great Falls in September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-Great Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Great Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Great Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Great Falls flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Great Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 September 25, 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 September 25, 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

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
8.0
Very good
7,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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.

  • How long is the flight from Portland to Great Falls?

    Departing from Portland to Great Falls will take you 6h 31m. Portland and Great Falls are separated by a distance of 548 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Alaska Airlines, at $264, 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 36% 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
Shelby

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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 September 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$264Average$442FlexibilityNo cancel feeOn-time75%
DeltaCheapest$290Average$378FlexibilityNo cancel feeOn-timeN/A

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