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Uncover the best deals on Great Falls to Seattle flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest GTF - SEA Flights
Useful information for finding best airline tickets from Great Falls International to Seattle Tacoma International on your next trip.
Cheapest Round Trip Flight
$1009
United Airlines
• 1 stop
• 25h 55m
Jul 16 – Jul 21
The cheapest round trip flight from Great Falls to Seattle (GTF-SEA-GTF) is currently $1009
Cheapest One way Flight
$992
Delta Airlines
• 2 stops
• 27h 9m
Jul 17
The cheapest one way flight from Great Falls to Seattle (GTF-SEA) is currently $992
Cheapest Direct Flight
$271
Alaska Airlines
• nonstop
• 2h 30m
Jul 21
The cheapest nonstop flight from Great Falls to Seattle (GTF-SEA) is currently $271
Fastest Flight
2h 30m
The fastest nonstop flight from Great Falls to Seattle (GTF-SEA) takes 2h 30m
Top Airlines Flying from Great Falls to Seattle
Latest Flight Deals from Great Falls (GTF) to Seattle (SEA)
Compare and book low fare round-trip air tickets from Great Falls to Seattle. Ideal for travelers with confirmed return itineraries.
Jul 16 - Jul 21, Economy
Great Falls → Seattle
25h 55m
6:15 AM - 9:10 PM • 1 stop
Great Falls → Seattle
8h 53m
11:09 AM - 5:42 PM • 1 stop
United Airlines
Jul 16 - Jul 21, Economy
Great Falls → Seattle
38h 23m
6:25 PM - 4:28 PM • 1 stop
Great Falls → Seattle
8h 53m
11:09 AM - 5:42 PM • 1 stop
Delta Airlines
Jul 16 - Jul 21, Economy
Great Falls → Seattle
41h 48m
6:25 PM - 6:33 PM • 1 stop
Great Falls → Seattle
8h 53m
11:09 AM - 5:42 PM • 1 stop
Delta Airlines
Jul 16 - Jul 21, Economy
Great Falls → Seattle
17h 25m
6:15 AM - 4:00 PM • 1 stop
Great Falls → Seattle
22h 14m
7:00 AM - 9:34 PM • 2 stops
United Airlines
Jul 16 - Jul 21, Economy
Great Falls → Seattle
15h 48m
1:17 PM - 10:05 PM • 2 stops
Great Falls → Seattle
8h 53m
11:09 AM - 5:42 PM • 1 stop
Delta Airlines
Explore competitive one-way airfare options for GTF - SEA flights. Best suited for flexible or open-ended travel plans.
Flying to Seattle soon? We've surfaced some of the most affordable last-minute flights from Great Falls to Seattle, ideal for urgent plans or spontaneous trips.
Jul 16 - Jul 21, Economy
Great Falls → Seattle
25h 55m
6:15 AM - 9:10 PM • 1 stop
Great Falls → Seattle
8h 53m
11:09 AM - 5:42 PM • 1 stop
United Airlines
Jul 16 - Jul 21, Economy
Great Falls → Seattle
38h 23m
6:25 PM - 4:28 PM • 1 stop
Great Falls → Seattle
8h 53m
11:09 AM - 5:42 PM • 1 stop
Delta Airlines
Jul 16 - Jul 21, Economy
Great Falls → Seattle
41h 48m
6:25 PM - 6:33 PM • 1 stop
Great Falls → Seattle
8h 53m
11:09 AM - 5:42 PM • 1 stop
Delta Airlines
Jul 16 - Jul 21, Economy
Great Falls → Seattle
17h 25m
6:15 AM - 4:00 PM • 1 stop
Great Falls → Seattle
22h 14m
7:00 AM - 9:34 PM • 2 stops
United Airlines
Jul 16 - Jul 21, Economy
Great Falls → Seattle
15h 48m
1:17 PM - 10:05 PM • 2 stops
Great Falls → Seattle
8h 53m
11:09 AM - 5:42 PM • 1 stop
Delta Airlines
Looking for the fastest way to Seattle? These direct flight options from GTF to SEA offer both convenience and value—no layovers, just straight to your destination.
Jul 21 - Jul 26, Economy
Great Falls → Seattle
2h 30m
5:09 PM - 5:59 PM • nonstop
Great Falls → Seattle
2h 16m
1:53 PM - 4:29 PM • nonstop
Alaska Airlines
Jul 15 - Jul 20, Economy
Great Falls → Seattle
2h 30m
5:09 PM - 5:59 PM • nonstop
Great Falls → Seattle
2h 16m
1:53 PM - 4:29 PM • nonstop
Alaska Airlines
FAQs on Great Falls to Seattle Flights
What are the airports in Great Falls?
GTF
What’s the most popular airline flying from GTF to SEA?
The most popular airline flying from Great Falls to Seattle are
Can I fly from GTF to SEA non-stop?
Yes, you can fly GTF to SEA non-stop on
Which airlines fly nonstop between Great Falls and Seattle?
The non-stop flights between Great Falls and Seattle are .
What’s the earliest departure time from GTF to SEA Airport?
The earliest flight leaves GTF at 5:40 am and lands in SEA - Seattle Tacoma International
What are the airports in Seattle?
SEA
Can I make changes to my Great Falls to Seattle flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from GTF to SEA?
Read the fare rules of the Great Falls to Seattle air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Great Falls and Seattle?
operate flights between Great Falls and Seattle
How long does a flight from Great Falls to Seattle take?
It takes approximately 2 hour to fly non-stop from GTF to SEA, which is 511.99 miles by air.
Which airlines provide the cheapest flights from Great Falls (GTF) to Seattle (SEA) ?
In the past couple of days, the cheapest tickets to SEA from GTF were found on DL : USD 1161
Do I need a passport to fly between GTF and SEA?
No
What’s the latest departure time from GTF to SEA ?
The last flight leaves GTF at 6:25 pm
Great Falls (GTF) to Seattle (SEA): Airport Information
| Origin Airport | Great Falls International , Great Falls, US |
| Destination Airport | Seattle Tacoma International , Seattle, US |
| Distance | 512 miles |
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