$95 Cheap Flights from Great Falls (GTF) to Seattle (SEA)

View $95 flight on Wed, Sep 10, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $95 for one-way flights and $164 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Sep 3 - Sat, Sep 6
GTF
Great Falls
SEA
Seattle
$164 Roundtrip, found 1 day ago
$164
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Sep 3 from Great Falls to Seattle, returning Sat, Sep 6, priced at $164 found 1 day ago
Delta
Wed, Sep 3 - Sat, Sep 6
GTF
Great Falls
SEA
Seattle
$173 Roundtrip, found 1 day ago
$173
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Sep 3 from Great Falls to Seattle, returning Sat, Sep 6, priced at $173 found 1 day ago
Alaska Airlines
Tue, Dec 9 - Wed, Dec 17
GTF
Great Falls
SEA
Seattle
$174 Roundtrip, found 1 day ago
$174
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Dec 9 from Great Falls to Seattle, returning Wed, Dec 17, priced at $174 found 1 day ago
Alaska Airlines
Fri, Sep 5 - Tue, Sep 9
GTF
Great Falls
SEA
Seattle
$184 Roundtrip, found 1 hour ago
$184
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Fri, Sep 5 from Great Falls to Seattle, returning Tue, Sep 9, priced at $184 found 1 hour ago
Delta
Wed, Sep 3 - Sat, Sep 6
GTF
Great Falls
SEA
Seattle
$187 Roundtrip, found 1 day ago
$187
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Sep 3 from Great Falls to Seattle, returning Sat, Sep 6, priced at $187 found 1 day ago
Alaska Airlines
Sat, Oct 4 - Mon, Oct 6
GTF
Great Falls
SEA
Seattle
$204 Roundtrip, found 1 day ago
$204
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Oct 4 from Great Falls to Seattle, returning Mon, Oct 6, priced at $204 found 1 day ago
Delta
Sat, Oct 25 - Tue, Nov 4
GTF
Great Falls
SEA
Seattle
$204 Roundtrip, found 2 days ago
$204
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Oct 25 from Great Falls to Seattle, returning Tue, Nov 4, priced at $204 found 2 days ago
Delta
Sat, Sep 6 - Tue, Sep 9
GTF
Great Falls
SEA
Seattle
$205 Roundtrip, found 2 days ago
$205
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Sep 6 from Great Falls to Seattle, returning Tue, Sep 9, priced at $205 found 2 days ago
Alaska Airlines
Wed, Sep 3 - Sat, Sep 6
GTF
Great Falls
SEA
Seattle
$206 Roundtrip, found 1 day ago
$206
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Sep 3 from Great Falls to Seattle, returning Sat, Sep 6, priced at $206 found 1 day ago
United
Wed, Aug 20 - Wed, Aug 27
GTF
Great Falls
SEA
Seattle
$510 Roundtrip, found 1 day ago
$510
Roundtrip
found 1 day ago
Select United flight, departing Wed, Aug 20 from Great Falls to Seattle, returning Wed, Aug 27, priced at $510 found 1 day ago

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

February is typically the cheapest month to fly

From $136 - $328 per traveler.

Graph displaying average flight prices per month

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $313
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $313
Flights from Great Falls (GTF) to Seattle (SEA)
Origin airport
Great Falls Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, Delta, United
Roundtrip price
$153
Distance
510 mi
Average flight time
1 hour 51 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 September. 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 $95 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?
Find cheap return flights from Great Falls Intl. Airport (GTF) to Seattle - Tacoma Intl. Airport (SEA) starting at $152. Book a seat and be on your way. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Alaska Airlines flight leaving GTF on August 19 2025 and touching down at SEA. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from GTF to SEA?
The cheapest flights from GTF to SEA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
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 GTF to SEA?
Book a flight from GTF to SEA with Alaska Airlines. This carrier currently offers the cheapest one-way ticket for this route, starting at $94. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from GTF on October 18 2025. Prices were last updated on July 23 2025 and have not changed since.
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.