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$177+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — GTF
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$344
(Alaska Airlines)

One-way from

$177
(Alaska Airlines)

Popular in

February

Cheapest in

August

Average price

$329
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. 13% potential increase in price ($63 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 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 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 June 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/9. 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.
Sat 8/1610:40 amPDX - GTF
1 stop4h 33mAlaska Airlines
Sun 8/174:55 pmGTF - PDX
1 stop15h 57mAlaska Airlines
Deal found 6/9$344
This Delta deal was found by Cheapflights users on 6/10. 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 7/95:35 amPDX - GTF
1 stop4h 28mDelta
Fri 7/116:19 pmGTF - PDX
1 stop6h 16mDelta
Deal found 6/10$374
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Thu 7/36:39 pmPDX - GTF
1 stop13h 45mMultiple Airlines
Mon 7/710:14 amGTF - PDX
1 stop26h 03mMultiple Airlines
Deal found 6/10$395
This Mytrip deal was found by Cheapflights users on 6/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2710:34 amPDX - GTF
2 stops21h 50mAllegiant Air
Sun 8/38:02 pmGTF - PDX
2 stops22h 39mAllegiant Air
Deal found 6/12$500
This United Airlines deal was found by Cheapflights users on 6/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/276:43 pmPDX - GTF
1 stop25h 30mUnited Airlines
Sun 8/36:25 amGTF - PDX
1 stop28h 07mUnited Airlines
Deal found 6/12$545

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 June 12, 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 8/16

10:40 am-4:13 pm

1 stop4h 33m

Great Falls

Sun 8/17

4:55 pm-7:52 am

1 stop15h 57m

$344

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Wed 7/9

5:35 am-11:03 am

1 stop4h 28m

Great Falls

Fri 7/11

6:19 pm-11:35 pm

1 stop6h 16m

$374

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Thu 7/3

6:39 pm-9:24 am

1 stop13h 45m

Great Falls

Mon 7/7

10:14 am-11:17 am

1 stop26h 03m

$395

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sun 7/27

10:34 am-9:24 am

2 stops21h 50m

Great Falls

Sun 8/3

8:02 pm-5:41 pm

2 stops22h 39m

$500

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Sun 7/27

6:43 pm-9:13 pm

1 stop25h 30m

Great Falls

Sun 8/3

6:25 am-9:32 am

1 stop28h 07m

$545

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 8/15

9:59 pm-4:13 pm

1 stop17h 14m

$177

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Mon 6/30

5:30 am-11:02 am

1 stop4h 32m

$233

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Wed 6/18

9:19 am-7:07 pm

2 stops32h 48m

$298

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Fri 8/15

1:37 pm-11:29 am

3 stops20h 52m

$365

PortlandGreat Falls

PDX - GTF

PDXGTF

Portland

Wed 6/18

11:57 am-4:13 pm

1 stop3h 16m

$453

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

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 June 12, 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.

Rainfall in Great Falls by month

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

In terms of precipitation, rainfall in Great Falls ranges from 0.5 - 2.5 inches per month. June is typically the wettest month, when rainfall can reach 2.5 in. January is typically the driest time to visit Great Falls when rainfall is around 0.5 in.

Temperature in Great Falls by month

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

If weather is an important factor for your trip to Great Falls, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

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 June 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

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

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

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
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

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
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

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
725 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

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 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 $344, was found to be the cheapest airline from Portland to Great Falls.Alternate airlines to your destination round-trip include Delta and Allegiant Air. Alaska Airlines is priced at 12% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $177. Delta flights start at $233 while deals on Allegiant Air start at $298 one-way.

  • 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

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Alternative routes for Portland to Great Falls

See prices for flight routes from nearby airports that may be better suited for you.
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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$244Average$426FlexibilityNo cancel feeOn-time75%
DeltaCheapest$290Average$374FlexibilityNo cancel feeOn-timeN/A

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