$84 Cheap Flights from Great Falls (GTF) to Seattle (SEA)

View $84 flight on Wed, Jan 7, 2026Opens in a new window

Popular airlines from Great Falls, MT (GTF-Great Falls Intl.) to Seattle-Tacoma International Airport (SEA)

Cheap Flights from Great Falls to Seattle (GTF-SEA)

Prices were available within the past 7 days and start at $84 for one-way flights and $127 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Jan 10 - Sat, Jan 17
GTF
Great Falls
SEA
Seattle
$127 Roundtrip, found 14 hours ago
$127
Roundtrip
found 14 hours ago
Select Alaska Airlines flight, departing Sat, Jan 10 from Great Falls to Seattle, returning Sat, Jan 17, priced at $127 found 14 hours ago
Hawaiian Airlines
Wed, Dec 31 - Tue, Jan 6
GTF
Great Falls
SEA
Seattle
$127 Roundtrip, found 3 days ago
$127
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Wed, Dec 31 from Great Falls to Seattle, returning Tue, Jan 6, priced at $127 found 3 days ago
Delta
Sat, Nov 15 - Tue, Nov 18
GTF
Great Falls
SEA
Seattle
$146 Roundtrip, found 4 days ago
$146
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Nov 15 from Great Falls to Seattle, returning Tue, Nov 18, priced at $146 found 4 days ago
Delta
Sat, Dec 6 - Tue, Dec 9
GTF
Great Falls
SEA
Seattle
$174 Roundtrip, found 2 days ago
$174
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Dec 6 from Great Falls to Seattle, returning Tue, Dec 9, priced at $174 found 2 days ago
Alaska Airlines
Tue, Dec 2 - Thu, Dec 4
GTF
Great Falls
SEA
Seattle
$177 Roundtrip, found 1 day ago
$177
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Dec 2 from Great Falls to Seattle, returning Thu, Dec 4, priced at $177 found 1 day ago
Alaska Airlines
Tue, Dec 2 - Thu, Dec 11
GTF
Great Falls
SEA
Seattle
$182 Roundtrip, found 7 hours ago
$182
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Tue, Dec 2 from Great Falls to Seattle, returning Thu, Dec 11, priced at $182 found 7 hours ago
Delta
Wed, Jan 14 - Fri, Jan 16
GTF
Great Falls
SEA
Seattle
$183 Roundtrip, found 2 days ago
$183
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jan 14 from Great Falls to Seattle, returning Fri, Jan 16, priced at $183 found 2 days ago
Alaska Airlines
Mon, Dec 8 - Thu, Dec 11
GTF
Great Falls
SEA
Seattle
$187 Roundtrip, found 1 day ago
$187
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Dec 8 from Great Falls to Seattle, returning Thu, Dec 11, priced at $187 found 1 day ago
Delta
Sun, Nov 16 - Tue, Nov 18
GTF
Great Falls
SEA
Seattle
$188 Roundtrip, found 4 days ago
$188
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Nov 16 from Great Falls to Seattle, returning Tue, Nov 18, priced at $188 found 4 days ago
United
Wed, Nov 12 - Wed, Nov 19
GTF
Great Falls
SEA
Seattle
$536 Roundtrip, found 1 day ago
$536
Roundtrip
found 1 day ago
Select United flight, departing Wed, Nov 12 from Great Falls to Seattle, returning Wed, Nov 19, priced at $536 found 1 day ago

Find the cheapest month to fly from Great Falls (GTF) to Seattle (SEA)

January is typically the cheapest month to fly

From $126 - $377 per traveler.
Flights from Great Falls (GTF) to Seattle (SEA)
Origin airport
Great Falls Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$126
Distance
510 mi
Average flight time
1 hour 52 mins

Great Falls to Seattle Flights

The cheapest times to fly from Great Falls to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Great Falls to Seattle are during the month of January. You can find some of the cheapest flights from Great Falls to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Great Falls to Seattle

Sunday is one of the best days to book for cheap flights from Great Falls to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Great Falls to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Great Falls to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $84 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Great Falls to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Great Falls to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA) cost?
Get a cheap one-way flight from $84 or cheap return flight from $127 from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA)?
Flying in January may help you find better deals, as it's the cheapest month for flights between GTF and SEA. You'll usually find the lowest prices during the off-season.
Which airlines fly direct from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA)?
When jetting out of Great Falls Intl. Airport (GTF), you can get on a direct flight to Seattle - Tacoma Intl. Airport (SEA) with Alaska Airlines.
What is the cheapest airline that flies from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest GTF to SEA flight.
How many flights per day from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA)?
On average, only 1 nonstop flight departs daily from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA). Want additional options? Use Expedia's filter tool to discover flights with layovers and squeeze another destination into your itinerary.
What are the most popular departure times for flights from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA)?
Flights between GTF and SEA tend to be busiest at 4 PM. If you're after a more relaxed experience and possibly cheaper fares, choose a time outside the usual busy windows.
What day of the week has the most flights from GTF to SEA?
Friday offers the most flights from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA). Consider taking off on this day and you'll have a greater chance of finding a departure that fits your itinerary.
What is the earliest flight from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA)?
The first flight of the day jetting off from Great Falls Intl. Airport (GTF) is at around 4:53PM UTC-7. Catch this flight and you'll land at Seattle - Tacoma Intl. Airport (SEA) at approximately 5:48PM UTC-8. The total travel time is 1h 55m.
How long does it take to fly from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA)?
It takes approximately 1 hour and 55 minutes to fly the 510 mi from GTF to SEA.
What airline has the least delays from GTF to SEA?
Consider traveling with Alaska Airlines if you'd like to fly straight from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA) without any interruptions. This airline has the strongest track record for punctuality, with an on-time performance of 82%. Want to get notified of any changes? You can check your flight status using the Expedia App.
What is the best time to fly from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA)?
To touch down at Seattle - Tacoma Intl. Airport (SEA) without delays, choose a flight that leaves from Great Falls Intl. Airport (GTF) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Seattle from Great Falls Intl. Airport (GTF)?
Compare your flight options from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA). This is the only airport in Seattle you can land at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Booking your ticket from GTF to SEA just before your journey is typically more expensive. However, if there's some wiggle room with your travel dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a GTF to SEA flight and hotel package?
Compared with arranging flights and hotels separately, booking a GTF to SEA flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place will take the stress out of planning your trip. Just pick your flights and select from our extensive range of hotels, then tailor your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA)?
In most cases, you can cancel or reschedule your GTF to SEA flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you need further details, head to our Customer Service portal.

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*Available to One Key members.