PDX - GTF

$146 Find Cheap Flights from Portland to Great Falls

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Great Falls departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Great Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Great Falls, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Great Falls, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Great Falls (PDX-GTF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Great Falls that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Great Falls

Fri, Oct 10 - Sun, Oct 19
Alaska Airlines Logo
10:00 pm - 5:35 pmPDX-GTF
18h 35m1 stop
Alaska Airlines Logo
6:15 pm - 12:25 pmGTF-PDX
19h 10m1 stop
$372Alaska Airlines
Find Deal
Wed, Oct 8 - Wed, Oct 15
Alaska Airlines Logo
7:00 am - 5:35 pmPDX-GTF
9h 35m2 stops
Alaska Airlines Logo
6:15 pm - 9:47 amGTF-PDX
16h 32m2 stops
$374Alaska Airlines
Find Deal
Wed, Oct 8 - Wed, Oct 15
Alaska Airlines Logo
6:00 am - 5:35 pmPDX-GTF
10h 35m1 stop
Alaska Airlines Logo
6:15 pm - 12:18 amGTF-PDX
7h 03m1 stop
$382Alaska Airlines
Find Deal
Wed, Oct 8 - Wed, Oct 15
Alaska Airlines Logo
7:00 am - 5:35 pmPDX-GTF
9h 35m2 stops
Alaska Airlines Logo
6:15 pm - 12:18 amGTF-PDX
7h 03m1 stop
$390Alaska Airlines
Find Deal
Tue, Oct 7 - Thu, Oct 16
Alaska Airlines Logo
4:25 pm - 5:35 pmPDX-GTF
24h 10m1 stop
Alaska Airlines Logo
6:15 pm - 6:20 amGTF-PDX
13h 05m1 stop
$423Alaska Airlines
Find Deal
Fri, Oct 10 - Sun, Oct 19
Delta Logo
5:00 pm - 11:06 pmPDX-GTF
5h 06m1 stop
Delta Logo
6:09 pm - 11:57 pmGTF-PDX
6h 48m2 stops
$470Delta
Find Deal
Fri, Oct 3 - Wed, Oct 8
Delta Logo
9:50 am - 5:27 pmPDX-GTF
6h 37m1 stop
Delta Logo
6:09 pm - 11:43 pmGTF-PDX
6h 34m1 stop
$508Delta
Find Deal
Tue, Sep 30 - Sat, Oct 4
Delta Logo
5:30 am - 12:25 pmPDX-GTF
5h 55m1 stop
Delta Logo
6:11 pm - 10:38 pmGTF-PDX
5h 27m1 stop
$520Delta
Find Deal
Tue, Sep 30 - Sat, Oct 4
Delta Logo
7:15 am - 5:27 pmPDX-GTF
9h 12m2 stops
Delta Logo
6:11 pm - 10:38 pmGTF-PDX
5h 27m1 stop
$526Delta
Find Deal
Tue, Oct 7 - Thu, Oct 16
United Airlines Logo
3:50 pm - 9:11 pmPDX-GTF
28h 21m3 stops
United Airlines Logo
2:31 pm - 9:29 amGTF-PDX
19h 58m1 stop
$562United Airlines
Find Deal

Everything you should know

Top airlines
Alaska Airlines
Cheapest • from $372 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
April
Cheapest • 19% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$372
Overall average: $353
Alaska Airlines
Fri 10/10Sun 10/19
PDX - GTF • 1 stop
Cheapest one-way
$146
Alaska Airlines
Tue 10/14
PDX - GTF • 1 stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Great Falls!
Booking Insights

KAYAK's insights & trends for Portland to Great Falls flights

Get data-powered insights and trends into flights from Portland to Great Falls to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Portland to Great Falls?

The average price of all round-trip flights from Portland to Great Falls clicked on KAYAK for each day over the last 12 months.

For Portland to Great Falls, Saturday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Great Falls back to Portland, the best deals are generally found on Thursday, with Sunday being the most expensive.

What is the cheapest month to fly from Portland to Great Falls?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Great Falls, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Great Falls is April, where tickets cost $337 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $540 and $529 respectively.

Good to know

Low seasonJune
Cheapest flight$146
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Portland to Great Falls

When to book flights from Portland to Great Falls

Are your dates flexible? Find out the best times to travel from Portland to Great Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Great Falls

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

    In the last 3 days, the lowest price for a flight from Portland to Great Falls was $146 for a one-way ticket and $372 for a round-trip.

  • Do I need a passport to fly between Portland and Great Falls?

    A passport is not required to fly from Portland to Great Falls.

  • Which aircraft models fly most regularly from Portland to Great Falls?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Great Falls?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Portland and Great Falls, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Portland to Great Falls, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Portland to Great Falls are Alaska Airlines and Delta. With an average price for the route of $442 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $374 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Portland to Great Falls?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Great Falls.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Great Falls?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Great Falls from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Great Falls?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Great Falls with an airline and back to Portland with another airline. Booking your flights between Portland and GTF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Great Falls?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Great Falls from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Portland to Great Falls

 
See real verified KAYAK customer reviews for airlines flying from Portland to Great Falls. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Great Falls? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.8Comfort
7.1Food
8.5Crew
7.0Entertainment
8.1Boarding
Airline reviews

Didn't buy food and did not use entertainment as these were not the purpose of my flight.

10.0 ExcellentAnonymous, Sep 2025PDX - MCI
Read more Alaska Airlines reviews

Didn't buy food and did not use entertainment as these were not the purpose of my flight.

Flight was delayed as it always is with Alaska airlines. Particularly to smaller airports. No AC on the plane so it was miserably hot.

Website could be better with faster access to specific flight information and boarding pass once reservation is made. Not a fan of no seat selection on line. I had to consult gate agent each time to change seats on flights with lots of open seats. This cannot possibly be cost effective for airline. On plus side, Alaska seat legroom seemed larger than American. ns

Staff inside Portland terminal were rude, made us fell rushed and not at all accommodating to seniors. For this alone I will probably never booked from them again.

It was fine—the seats are not very comfortable and the aisles are very narrow. Nothing different from other airlines

I booked a round trip. I ordered a lunch going and a lunch for the return but got both lunches going. Could have been my error. Both lunches were good.

Well the flight being delayed multiple time really was frustrating. But the crew and flight was good.

generally good. No snacks or drinks on the flight 3379 from Portland to San Jose, CA. Sad.

Everything except for the lack of a choice of the snack provided was great.

I like the friendliness of the staff. The food choices were OK. I wish there was more options. The entertainment through the movie portal was alright.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.