$134+ Cheap flights from Great Falls to Seattle (GTF - SEA)
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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — SEA
Oct 10 — Oct 171
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Great Falls to Seattle 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 Great Falls to Seattle
Cheapest
Best
Last-minute
One-way
Cheapest flights from Great Falls to SeattleExplore the most affordable flight options available from Great Falls to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from Great Falls to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This Expedia deal was found by Cheapflights users on 9/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/74:59 pm -
Nonstop1h 56m
Wed 11/111:39 pm -
Nonstop1h 40m
Deal found 9/7![Alaska Airlines logo]()
$201
This Expedia deal was found by Cheapflights users on 9/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/185:12 pm -
Nonstop2h 00m
Sat 1/912:52 pm -
Nonstop1h 36m
Deal found 9/7![Alaska Airlines logo]()
$231
This Delta deal was found by Cheapflights users on 9/10. 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.
Sat 11/76:27 pm -
1 stop4h 38m
Wed 11/119:25 am -
1 stop7h 14m
Deal found 9/10![Delta logo]()
$236
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:27 pm -
1 stop6h 32m
Wed 10/145:30 am -
1 stop6h 08m
Deal found 9/9![Delta logo]()
$246
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:27 pm -
1 stop6h 32m
Thu 10/1511:05 am -
1 stop5h 42m
Deal found 9/9![Delta logo]()
$256
This Delta deal was found by Cheapflights users on 9/10. 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.
Tue 11/31:18 pm -
1 stop6h 44m
Sat 11/79:42 am -
1 stop7h 05m
Deal found 9/10![Delta logo]()
$266
This Priceline deal was found by Cheapflights users on 9/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:19 pm -
Nonstop1h 49m
Sat 10/31:59 pm -
Nonstop1h 36m
Deal found 9/5![Alaska Airlines logo]()
$269
This Trip.com deal was found by Cheapflights users on 9/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:15 pm -
Nonstop1h 53m
Sat 10/311:59 pm -
Nonstop1h 36m
Deal found 9/9![Alaska Airlines logo]()
$287
This Priceline deal was found by Cheapflights users on 9/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/64:59 pm -
Nonstop1h 56m
Sun 11/81:39 pm -
Nonstop1h 40m
Deal found 9/8![Alaska Airlines logo]()
$302
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:27 pm -
1 stop4h 38m
Mon 10/125:30 am -
1 stop16h 10m
Deal found 9/9![Delta logo]()
$305
This Delta deal was found by Cheapflights users on 9/5. 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.
Sat 9/261:15 pm -
1 stop4h 35m
Sat 10/35:45 am -
1 stop5h 50m
Deal found 9/5![Delta logo]()
$308
Best flights from Great Falls to SeattleDiscover carefully curated flight deals from Great Falls to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Great Falls to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/104:59 pm -
Nonstop1h 56m
Sat 11/141:39 pm -
Nonstop1h 40m
Deal found 9/7![Alaska Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 9/7. 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.
Fri 2/261:10 pm -
1 stop6h 20m
Fri 3/129:00 am -
1 stop7h 43m
Deal found 9/7![Delta logo]()
$272
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/74:59 pm -
Nonstop1h 56m
Wed 11/111:39 pm -
Nonstop1h 40m
Deal found 9/9![Alaska Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 9/5. 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.
Fri 10/26:21 pm -
1 stop6h 38m
Sun 10/49:40 am -
1 stop7h 01m
Deal found 9/5![Delta logo]()
$308
This Delta deal was found by Cheapflights users on 9/6. 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 10/246:27 pm -
1 stop4h 38m
Mon 10/269:42 am -
1 stop7h 05m
Deal found 9/6![Delta logo]()
$339
This Booking.com deal was found by Cheapflights users on 9/6. 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.
Fri 10/235:15 pm -
Nonstop1h 53m
Mon 10/261:59 pm -
Nonstop1h 36m
Deal found 9/6![Alaska Airlines logo]()
$400
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:27 pm -
1 stop6h 32m
Tue 10/136:55 pm -
2 stops21h 52m
Deal found 9/9![Delta logo]()
$384
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/111:18 pm -
1 stop6h 34m
Thu 10/1511:05 am -
1 stop5h 42m
Deal found 9/9![Delta logo]()
$386
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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.
Tue 10/65:15 pm -
Nonstop1h 53m
Sun 10/111:59 pm -
Nonstop1h 36m
Deal found 9/9![Alaska Airlines logo]()
$443
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:27 pm -
1 stop6h 32m
Mon 10/269:42 am -
1 stop7h 05m
Deal found 9/9![Delta logo]()
$402
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:27 pm -
1 stop6h 32m
Sat 10/107:32 am -
2 stops14h 08m
Deal found 9/9![Delta logo]()
$404
Last-minute flights from Great Falls to SeattleDiscover last-minute flight deals from Great Falls to Seattle. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Great Falls to Seattle. Data last updated September 10, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 9/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:19 pm -
Nonstop1h 49m
Sat 10/31:59 pm -
Nonstop1h 36m
Deal found 9/5![Alaska Airlines logo]()
$269
This Delta deal was found by Cheapflights users on 9/5. 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.
Sat 9/261:15 pm -
1 stop4h 35m
Sat 10/35:45 am -
1 stop5h 50m
Deal found 9/5![Delta logo]()
$308
This Delta deal was found by Cheapflights users on 9/8. 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.
Tue 9/296:21 pm -
1 stop4h 49m
Tue 10/65:30 am -
1 stop6h 08m
Deal found 9/8![Delta logo]()
$318
This Booking.com deal was found by Cheapflights users on 9/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:19 pm -
Nonstop1h 49m
Tue 10/61:59 pm -
Nonstop1h 36m
Deal found 9/8![Alaska Airlines logo]()
$333
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:27 pm -
1 stop19h 25m
Wed 10/145:30 am -
1 stop6h 08m
Deal found 9/9![Delta logo]()
$325
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:27 pm -
1 stop19h 25m
Thu 10/1511:05 am -
1 stop5h 42m
Deal found 9/9![Delta logo]()
$335
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:27 pm -
1 stop6h 32m
Wed 10/145:30 am -
1 stop6h 08m
Deal found 9/9![Delta logo]()
$246
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:27 pm -
1 stop6h 32m
Thu 10/1511:05 am -
1 stop5h 42m
Deal found 9/9![Delta logo]()
$256
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:27 pm -
1 stop6h 32m
Tue 10/135:55 pm -
1 stop17h 43m
Deal found 9/9![Delta logo]()
$315
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:27 pm -
1 stop4h 38m
Wed 10/145:30 am -
1 stop6h 08m
Deal found 9/9![Delta logo]()
$236
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:27 pm -
1 stop4h 38m
Mon 10/125:30 am -
1 stop16h 10m
Deal found 9/9![Delta logo]()
$305
This Trip.com deal was found by Cheapflights users on 9/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:15 pm -
Nonstop1h 53m
Sat 10/311:59 pm -
Nonstop1h 36m
Deal found 9/9![Alaska Airlines logo]()
$287
One-way flights from Great Falls to SeattleSearch for one-way flight options from Great Falls to Seattle. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from Great Falls to Seattle. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Priceline deal was found by Cheapflights users on 9/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:15 pm -
Nonstop1h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Alaska Airlines logo]()
$134
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:15 pm -
Nonstop1h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Alaska Airlines logo]()
$144
This Delta deal was found by Cheapflights users on 9/10. 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.
Sat 10/241:18 pm -
1 stop4h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Delta logo]()
$148
This Delta deal was found by Cheapflights users on 9/6. 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.
Thu 10/291:18 pm -
1 stop4h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Delta logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/159:22 am -
2 stops30h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/19:22 am -
2 stops30h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$179
This Delta deal was found by Cheapflights users on 9/6. 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.
Sun 10/116:27 pm -
1 stop6h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Delta logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/89:22 am -
2 stops34h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/189:51 am -
2 stops30h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$201
Find flight deals from Great Falls to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to Seattle (SEA). 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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $201 (Expedia) |
One-way from | $134 (Priceline) |
Popular in | April |
Cheapest in | February |
Average price | $258 |
Good round-trip deal | $372 or less |
Good one-way deal | $259 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Great Falls to Seattle 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 7,457,451 searches. Data last updated September 10, 2026.
Use the filters below to find and compare flights from Great Falls to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Great FallsSeattle
GTF Great Falls - SEA Seattle/Tacoma Intl
GTFSEA
Great Falls
Sat 10/10
6:27 pm-10:05 pm
1 stop4h 38m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$148
Great FallsSeattle
GTF Great Falls - SEA Seattle/Tacoma Intl
GTFSEA
Great Falls
Tue 10/13
6:27 pm-10:05 pm
1 stop4h 38m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$148
Great FallsSeattle
GTF Great Falls - SEA Seattle/Tacoma Intl
GTFSEA
Great Falls
Sat 10/24
1:18 pm-4:55 pm
1 stop4h 37m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$148
Great FallsSeattle
GTF Great Falls - SEA Seattle/Tacoma Intl
GTFSEA
Great Falls
Tue 11/3
1:18 pm-7:02 pm
1 stop6h 44m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$148
Great FallsSeattle
GTF Great Falls - SEA Seattle/Tacoma Intl
GTFSEA
Great Falls
Thu 10/22
1:18 pm-6:52 pm
1 stop6h 34m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$158
Great FallsSeattle
GTF Great Falls - SEA Seattle/Tacoma Intl
GTFSEA
Great Falls
Mon 11/2
6:27 pm-10:05 pm
1 stop4h 38m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$158
Great FallsSeattle
GTF Great Falls - SEA Seattle/Tacoma Intl
GTFSEA
Great Falls
Fri 12/4
6:19 pm-12:06 am
1 stop6h 47m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$158
Great FallsSeattle
GTF Great Falls - SEA Seattle/Tacoma Intl
GTFSEA
Great Falls
Mon 10/19
5:40 am-9:10 am
1 stop4h 30m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$158
Great FallsSeattle
GTF Great Falls - SEA Seattle/Tacoma Intl
GTFSEA
Great Falls
Thu 11/5
6:27 pm-10:05 pm
1 stop4h 38m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$158
Great FallsSeattle
GTF Great Falls - SEA Seattle/Tacoma Intl
GTFSEA
Great Falls
Fri 10/30
6:27 pm-10:05 pm
1 stop4h 38m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$158
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Great Falls to Seattle
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 Great Falls to Seattle in September.
| 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 Great Falls-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Great Falls-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Great Falls-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Great Falls-Seattle 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 Great Falls-Seattle 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 Great Falls to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Great Falls with our price prediction graph.
GTF-SEA
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 Great Falls to Seattle
Prices
Airlines
What is the cheapest month to book a flight from Great Falls to Seattle?
Currently, February is the cheapest month in which you can book a flight from Great Falls to Seattle (average of $212). Flying from Great Falls to Seattle in April is currently the most expensive (average of $438). 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 GTF to SEA?
Find hourly flight availability from Great Falls to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 10, 2026.
Unlike in the morning, when flights are generally more expensive, you can save up to 86% on flights from Great Falls to Seattle by exploring options for tickets in the afternoon.
What is the cheapest day to fly from Great Falls to Seattle?
Use this chart to determine the cheapest time to fly round-trip from Great Falls to Seattle. Price data was last updated on December 20, 2025.
Travelers seeking maximum savings on their Great Falls to Seattle flight should consider departing on Tuesday at noon when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated September 10, 2026.
See what other customers who have flown with Alaska Airlines from Great Falls to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Related info for your journey
Find useful and relevant information for your journey from Great Falls to Seattle. 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 Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Edmonds
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
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
Other flight options
Other flights from Great Falls
Popular flights
Seattle flight routes
Alternative routes for Great Falls to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Great Falls to Seattle by cabin class
Find flights from Great Falls to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Great Falls and Seattle flights
Browse other Great Falls and Seattle flight options. Last updated on September 10, 2026.
Other flights from Great Falls
Browse through other flights departing from Great Falls. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
Top airline flying from Great Falls to Seattle
Discover the top airline that operate flights from Great Falls to Seattle. 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 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$146 | Average$292 | FlexibilityNo cancel fee | On-time75% |