HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$128+ Cheap flights from Great Falls to Seattle (GTF - SEA)

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — SEA
May 28 — Jun 41
Thu 5/28
Thu 6/4
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 flights from Great Falls to Seattle
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 April 28, 2026.

This Alaska Airlines deal was found by Cheapflights users on 4/27. 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 5/236:52 pm
GTF
-
SEA
Nonstop1h 46m
Alaska Airlines
Wed 5/273:36 pm
SEA
-
GTF
Nonstop1h 36m
Alaska Airlines
Deal found 4/27$187
This Expedia deal was found by Cheapflights users on 4/28. 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 5/296:52 pm
GTF
-
SEA
Nonstop1h 46m
Alaska Airlines
Sun 5/313:36 pm
SEA
-
GTF
Nonstop1h 36m
Alaska Airlines
Deal found 4/28$207
This Delta deal was found by Cheapflights users on 4/27. 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 6/56:19 pm
GTF
-
SEA
1 stop6h 51m
Delta
Sun 6/79:30 am
SEA
-
GTF
1 stop7h 14m
Delta
Deal found 4/27$236
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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 5/206:52 pm
GTF
-
SEA
Nonstop1h 46m
Alaska Airlines
Thu 5/213:36 pm
SEA
-
GTF
Nonstop1h 36m
Alaska Airlines
Deal found 4/27$237
This Delta deal was found by Cheapflights users on 4/27. 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 6/36:19 pm
GTF
-
SEA
1 stop6h 51m
Delta
Sat 6/69:25 am
SEA
-
GTF
1 stop7h 14m
Delta
Deal found 4/27$246
This Alaska Airlines deal was found by Cheapflights users on 4/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/96:52 pm
GTF
-
SEA
Nonstop1h 46m
Alaska Airlines
Thu 6/181:53 pm
SEA
-
GTF
Nonstop1h 36m
Alaska Airlines
Deal found 4/25$252
This Delta deal was found by Cheapflights users on 4/27. 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 6/56:19 pm
GTF
-
SEA
1 stop6h 51m
Delta
Mon 6/89:30 am
SEA
-
GTF
1 stop7h 14m
Delta
Deal found 4/27$256
This Alaska Airlines deal was found by Cheapflights users on 4/26. 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.
Thu 6/46:52 pm
GTF
-
SEA
Nonstop1h 46m
Alaska Airlines
Thu 6/181:53 pm
SEA
-
GTF
Nonstop1h 36m
Alaska Airlines
Deal found 4/26$262
This Alaska Airlines deal was found by Cheapflights users on 4/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/96:52 pm
GTF
-
SEA
Nonstop1h 46m
Alaska Airlines
Wed 6/171:53 pm
SEA
-
GTF
Nonstop1h 36m
Alaska Airlines
Deal found 4/25$292
This Delta deal was found by Cheapflights users on 4/25. 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.
Tue 6/26:19 pm
GTF
-
SEA
1 stop4h 42m
Delta
Tue 6/95:30 am
SEA
-
GTF
1 stop6h 10m
Delta
Deal found 4/25$296
This Delta deal was found by Cheapflights users on 4/27. 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 5/166:19 pm
GTF
-
SEA
1 stop4h 44m
Delta
Wed 5/209:25 am
SEA
-
GTF
1 stop7h 14m
Delta
Deal found 4/27$307

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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$187
(Alaska Airlines)

One-way from

$128
(Delta)

Popular in

April

Cheapest in

January

Average price

$485

Good round-trip deal

$222 or less

Good one-way deal

$189 or less
Provider with most accurate pricing for Great Falls-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Great Falls-Seattle/Tacoma Intl flights.
Search Deals
From Great Falls to Seattle/Tacoma Intl
Search Deals
One-way flight from Great Falls to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($86 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Great Falls to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Great Falls to Seattle/Tacoma Intl.
Search Deals

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 2,558,603 searches. Data last updated April 28, 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

Price

Cheapest round-trip

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Thu 6/11

5:09 pm-5:59 pm

Nonstop1h 50m

Seattle/Tacoma Intl

Sun 6/14

1:53 pm-4:29 pm

Nonstop1h 36m

$318
Quickest round-trip

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Wed 5/20

6:52 pm-7:38 pm

Nonstop1h 46m

Seattle/Tacoma Intl

Tue 6/2

3:36 pm-6:12 pm

Nonstop1h 36m

$337

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Mon 7/20

5:09 pm-5:59 pm

Nonstop1h 50m

Seattle/Tacoma Intl

Wed 7/29

1:53 pm-4:29 pm

Nonstop1h 36m

$358

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Wed 5/20

1:07 pm-6:48 pm

1 stop6h 41m

Seattle/Tacoma Intl

Tue 6/2

9:25 am-5:39 pm

1 stop7h 14m

$402

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Thu 6/11

6:25 pm-11:59 pm

1 stop6h 34m

Seattle/Tacoma Intl

Tue 6/16

7:15 am-12:40 pm

1 stop4h 25m

$443

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Thu 5/14

6:52 pm-7:38 pm

Nonstop1h 46m

Seattle/Tacoma Intl

Mon 5/18

3:36 pm-6:12 pm

Nonstop1h 36m

$452

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Tue 6/9

6:25 pm-10:05 pm

1 stop4h 40m

Seattle/Tacoma Intl

Tue 6/16

7:15 am-12:40 pm

1 stop4h 25m

$472

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Sun 7/19

6:25 pm-11:59 pm

1 stop6h 34m

Seattle/Tacoma Intl

Thu 7/30

11:05 am-5:42 pm

1 stop5h 37m

$512

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Wed 6/10

1:20 pm-6:36 pm

1 stop6h 16m

Seattle/Tacoma Intl

Tue 6/16

5:30 pm-5:44 pm

2 stops23h 14m

$539

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Thu 6/4

6:19 pm-12:10 am

1 stop6h 51m

Seattle/Tacoma Intl

Thu 6/18

7:15 am-12:40 pm

1 stop4h 25m

$542

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 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.
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

What is the cheapest month to book a flight from Great Falls to Seattle?

Currently, January is the cheapest month in which you can book a flight from Great Falls to Seattle (average of $206). Flying from Great Falls to Seattle in April is currently the most expensive (average of $485). 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 April 28, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 87% 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.

How much does it cost to fly round-trip from Great Falls to Seattle?

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 April 28, 2026.
See what other customers who have flown with Alaska Airlines and Delta 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.
Alaska Airlines
7.9
Good
12,311 reviews

Comfort

7.8

Crew

8.5

Food

7.0

Entertainment

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Alaska Airlines
7.9
Good
12,311 reviews
Alaska Airlines
7.9
Good
12,311 reviews

Comfort

7.8

Crew

8.5

Food

7.0

Entertainment

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Delta
7.9
Good
8,466 reviews
Alaska Airlines
7.9
Good
12,311 reviews

Comfort

7.8

Crew

8.5

Food

7.0

Entertainment

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

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.

  • What airports do I use to fly from Great Falls to Seattle?

    To fly from Great Falls to Seattle, you need to book a flight from Great Falls (GTF) to Seattle/Tacoma Intl (SEA). Nonstop flights to Seattle/Tacoma Intl from Great Falls take 1h 46m on average. When it comes time to book airfare, you have a few options: there is 1 outbound flight from Great Falls to Seattle/Tacoma Intl offered by 2 different airlines.

  • How popular is this Great Falls to Seattle flight route?

    The Great Falls to Seattle/Tacoma Intl flight path was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    There are many flights that can get you from Great Falls to Seattle in 1h 50m. Fly via Alaska Airlines or Delta to get the fastest option. Airlines will cover a distance of 510 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Cheapflights users have booked flights from Great Falls to Seattle round-trip from $103. Another airline that can offer you cheap pricing is Alaska Airlines. Delta is priced at 62% lower than the current average price of a flight leaving 3 months from now.

  • What are the most reliable airlines from Great Falls to Seattle?

    Consider Horizon Air (84%), Hawaiian Airlines (72%) or Alaska Airlines (70%) when booking your flight. These represent the most reliable airlines when flying from Great Falls to Seattle.

  • What are the cheapest flights from Great Falls to Seattle?

    Looking for the cheapest flight from Great Falls to Seattle? While on average our users pay $338, our data indicates the cheapest price to be $139. The most popular route (Great Falls - Seattle/Tacoma Intl), is priced around $226.

  • Can I find deals for flights from Great Falls to Seattle that include hotel bookings?

    Yes. In addition to deals on Great Falls to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Great Falls to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Great Falls to Seattle.

  • Can I find deals for business class flights from Great Falls to Seattle?

    Yes. Cheapflights offers flight deals from Great Falls to Seattle 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 Great Falls to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Great Falls to Seattle (average of $206). Flying from Great Falls to Seattle in April is currently the most expensive (average of $485). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Renton
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline

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.

Top 2 airlines flying from Great Falls to Seattle

Discover the top 2 airlines 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 2,558,603 searches. Data last updated April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$103Average$216FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$146Average$273FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.