$409+ Cheap flights from Portland to Great Falls (PDX - GTF)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — GTF
Sep 8 — Sep 151
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Portland to Great Falls with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Portland to Great Falls
Cheapest
Best
Last-minute
Cheapest flights from Portland to Great FallsExplore 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 9, 2026.
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 9, 2026.
This Booking.com deal was found by Cheapflights users on 8/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:14 am -
1 stop7h 25m
Sat 9/265:19 pm -
1 stop3h 31m
Deal found 8/6![Alaska Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 8/5. 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 12/225:05 pm -
1 stop4h 48m
Wed 2/36:20 pm -
1 stop6h 31m
Deal found 8/5![Delta logo]()
$414
This Alaska Airlines deal was found by Cheapflights users on 8/5. 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 9/2610:45 am -
1 stop4h 54m
Fri 10/25:19 pm -
1 stop16h 09m
Deal found 8/5![Alaska Airlines logo]()
$419
This Booking.com deal was found by Cheapflights users on 8/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2912:18 pm -
1 stop3h 17m
Mon 11/24:57 pm -
1 stop19h 22m
Deal found 8/7![Alaska Airlines logo]()
$422
This Delta deal was found by Cheapflights users on 8/6. 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 9/125:10 pm -
1 stop4h 27m
Sat 9/265:40 am -
2 stops6h 00m
Deal found 8/6![Delta logo]()
$432
This Alaska Airlines deal was found by Cheapflights users on 8/4. 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.
Fri 10/3011:03 am -
1 stop4h 32m
Mon 11/24:57 pm -
1 stop21h 17m
Deal found 8/4![Alaska Airlines logo]()
$433
This Delta deal was found by Cheapflights users on 8/5. 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 12/225:05 pm -
1 stop4h 48m
Thu 2/45:30 am -
1 stop4h 46m
Deal found 8/5![Delta logo]()
$434
This Delta deal was found by Cheapflights users on 8/8. 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 9/265:30 am -
2 stops11h 11m
Fri 10/26:21 pm -
1 stop6h 19m
Deal found 8/8![Delta logo]()
$446
Best flights from Portland to Great FallsDiscover carefully curated flight deals from Portland to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
Discover carefully curated flight deals from Portland to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/8. 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 9/2610:45 am -
1 stop4h 54m
Fri 10/25:19 pm -
1 stop16h 09m
Deal found 8/8![Alaska Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 8/6. 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 9/125:10 pm -
1 stop4h 27m
Sat 9/265:40 am -
2 stops6h 00m
Deal found 8/6![Delta logo]()
$432
This Alaska Airlines deal was found by Cheapflights users on 8/4. 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.
Fri 10/3011:03 am -
1 stop4h 32m
Mon 11/24:57 pm -
1 stop21h 17m
Deal found 8/4![Alaska Airlines logo]()
$433
This Delta deal was found by Cheapflights users on 8/6. 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 9/115:10 pm -
1 stop4h 27m
Sun 9/135:40 am -
1 stop4h 01m
Deal found 8/6![Delta logo]()
$454
This Booking.com deal was found by Cheapflights users on 8/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:48 pm -
2 stops21h 47m
Mon 11/24:57 pm -
1 stop24h 53m
Deal found 8/7![Alaska Airlines logo]()
$436
This Delta deal was found by Cheapflights users on 8/7. 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 9/55:08 pm -
1 stop4h 21m
Sat 9/125:40 am -
1 stop4h 01m
Deal found 8/7![Delta logo]()
$480
This Booking.com deal was found by Cheapflights users on 8/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:09 am -
1 stop8h 26m
Sun 10/115:15 pm -
1 stop6h 47m
Deal found 8/7![Alaska Airlines logo]()
$454
This Delta deal was found by Cheapflights users on 8/8. 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 9/265:30 am -
2 stops11h 11m
Fri 10/26:21 pm -
2 stops6h 33m
Deal found 8/8![Delta logo]()
$503
Last-minute flights from Portland to Great FallsDiscover last-minute flight deals from Portland to Great Falls. Data last updated August 9, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Great Falls. Data last updated August 9, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/7. 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 9/55:08 pm -
1 stop4h 21m
Sat 9/125:40 am -
1 stop4h 01m
Deal found 8/7![Delta logo]()
$480
This Booking.com deal was found by Cheapflights users on 8/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:53 pm -
2 stops20h 52m
Sat 9/125:19 pm -
1 stop5h 42m
Deal found 8/7![Alaska Airlines logo]()
$488
This Delta deal was found by Cheapflights users on 8/7. 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 9/55:08 pm -
1 stop4h 21m
Mon 9/75:40 am -
1 stop3h 57m
Deal found 8/7![Delta logo]()
$521
This Delta deal was found by Cheapflights users on 8/6. 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 9/115:10 pm -
1 stop4h 27m
Sun 9/135:40 am -
1 stop4h 01m
Deal found 8/6![Delta logo]()
$454
This Booking.com deal was found by Cheapflights users on 8/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:14 am -
1 stop7h 25m
Sat 9/265:19 pm -
1 stop3h 31m
Deal found 8/6![Alaska Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 8/6. 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 9/125:10 pm -
1 stop4h 27m
Sat 9/265:40 am -
2 stops6h 00m
Deal found 8/6![Delta logo]()
$432
This Alaska Airlines deal was found by Cheapflights users on 8/5. 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 9/2610:45 am -
1 stop4h 54m
Fri 10/25:19 pm -
1 stop16h 09m
Deal found 8/5![Alaska Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 8/8. 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 9/265:30 am -
2 stops11h 11m
Fri 10/26:21 pm -
1 stop6h 19m
Deal found 8/8![Delta logo]()
$446
Find 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 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $409 (Booking.com) |
Popular in | January |
Cheapest in | April |
Average price | $563 |
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 9, 2026.
Use the filters below to find and compare flights from Portland to Great Falls that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandGreat Falls
PDX Portland - GTF Great Falls
PDXGTF
Portland
Sat 9/26
10:45 am-4:39 pm
1 stop4h 54m
Great Falls
Fri 10/2
5:19 pm-8:28 am
1 stop16h 09m
$419
PortlandGreat Falls
PDX Portland - GTF Great Falls
PDXGTF
Portland
Sat 9/12
5:10 pm-10:37 pm
1 stop4h 27m
Great Falls
Sat 9/26
5:40 am-10:40 am
2 stops6h 00m
$432
PortlandGreat Falls
PDX Portland - GTF Great Falls
PDXGTF
Portland
Fri 10/30
11:03 am-4:35 pm
1 stop4h 32m
Great Falls
Mon 11/2
4:57 pm-1:14 pm
1 stop21h 17m
$433
PortlandGreat Falls
PDX Portland - GTF Great Falls
PDXGTF
Portland
Thu 10/29
5:48 pm-4:35 pm
2 stops21h 47m
Great Falls
Mon 11/2
4:57 pm-4:50 pm
1 stop24h 53m
$436
PortlandGreat Falls
PDX Portland - GTF Great Falls
PDXGTF
Portland
Fri 9/11
5:10 pm-10:37 pm
1 stop4h 27m
Great Falls
Sun 9/13
5:40 am-8:41 am
1 stop4h 01m
$454
PortlandGreat Falls
PDX Portland - GTF Great Falls
PDXGTF
Portland
Thu 10/8
7:09 am-4:35 pm
1 stop8h 26m
Great Falls
Sun 10/11
5:15 pm-11:02 pm
1 stop6h 47m
$454
Quickest round-trip
PortlandGreat Falls
PDX Portland - GTF Great Falls
PDXGTF
Portland
Sat 9/5
5:08 pm-10:29 pm
1 stop4h 21m
Great Falls
Sat 9/12
5:40 am-8:41 am
1 stop4h 01m
$480
PortlandGreat Falls
PDX Portland - GTF Great Falls
PDXGTF
Portland
Sat 9/26
5:30 am-5:41 pm
2 stops11h 11m
Great Falls
Fri 10/2
6:21 pm-11:54 pm
2 stops6h 33m
$503
Sorted by cheapest first
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 August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
PDX-GTF
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
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 9, 2026.
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.
Crew
8.5
Boarding
8.1
Comfort
7.8
Entertainment
7.0
Food
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Crew
8.5
Boarding
8.1
Comfort
7.8
Entertainment
7.0
Food
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Crew
8.5
Boarding
8.1
Comfort
7.8
Entertainment
7.0
Food
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
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.
Traveling to a place near Great Falls?
Book flights to Great Falls if you plan to visit one of these locationsShelby
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Great Falls flight routes
Other flight options
Other flights from Portland
Popular flights
Alternative routes for Portland to Great Falls
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Great Falls by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Portland to Great Falls by cabin class
Find flights from Portland to Great Falls, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Great Falls
Explore flights to Great Falls departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 9, 2026.
Portland and Great Falls flights
Browse other Portland and Great Falls flight options. Last updated on August 9, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on August 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$186 | Average$400 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$270 | Average$414 | FlexibilityNo cancel fee | On-time75% |