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Cheap Flights from Great Falls (GTF) to Seattle (SEAA)

Compare Great Falls International to Seattle flight deals

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Flight deals from Great Falls International to Seattle

Looking for a cheap last-minute deal or the best return flight from Great Falls International Airport to Seattle? If you want to travel next month, return fares start from $306. Find the lowest prices on one-way and return tickets right here.
Seattle.$306 per passenger.Departing Wed, 16 Sep, returning Wed, 23 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Great Falls International on Wed, 16 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Wed, 23 Sep, arriving in Great Falls International.Price includes taxes and charges.From $306, select.
Seattle.$321 per passenger.Departing Sat, 24 Oct, returning Wed, 28 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Great Falls International on Sat, 24 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Wed, 28 Oct, arriving in Great Falls International.Price includes taxes and charges.From $321, select.
Seattle.$334 per passenger.Departing Fri, 30 Oct, returning Sun, 1 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Great Falls International on Fri, 30 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Sun, 1 Nov, arriving in Great Falls International.Price includes taxes and charges.From $334, select.
Seattle.$499 per passenger.Departing Sun, 30 Aug, returning Sat, 5 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Great Falls International on Sun, 30 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Sat, 5 Sep, arriving in Great Falls International.Price includes taxes and charges.From $499, select.
Seattle.$571 per passenger.Departing Thu, 24 Dec, returning Fri, 1 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Great Falls International on Thu, 24 Dec, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Fri, 1 Jan, arriving in Great Falls International.Price includes taxes and charges.From $571, select.
Seattle.$599 per passenger.Departing Wed, 9 Jun, returning Thu, 10 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from Great Falls International on Wed, 9 Jun, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Thu, 10 Jun, arriving in Great Falls International.Price includes taxes and charges.From $599, select.
Seattle.$788 per passenger.Departing Sun, 20 Dec, returning Sat, 26 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Great Falls International on Sun, 20 Dec, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Sat, 26 Dec, arriving in Great Falls International.Price includes taxes and charges.From $788, select.
Seattle.$1,018 per passenger.Departing Sun, 16 Aug, returning Sun, 23 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Great Falls International on Sun, 16 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Sun, 23 Aug, arriving in Great Falls International.Price includes taxes and charges.From $1,018, select.

Find the cheapest month to fly from Great Falls International to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Great Falls International to Seattle flights are currently cheapest in September.
Aug
from $1,018
Sep
from $306
Oct
from $321
Nov
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Dec
from $788
Jan
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Feb
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Mar
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Apr
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May
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Jun
from $599
Jul
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Direct flights from Great Falls International to Seattle

Alternative Great Falls International to Seattle routes

Looking for the cheapest, fastest or easiest route from Great Falls International to Seattle? You could fly into the following airports instead.

Seattle Lake Union SPB

2km from central Seattle
Closest
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Seattle Boeing Fld

11km from central Seattle
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Seattle / Tacoma International

20km from central Seattle
Cheapest
from $306
Search flights

Paine Field

33km from central Seattle
Search flights

Great Falls to Seattle: Flight information

The things to know before you go.
Cheapest flight found$306
Cheapest month to flySeptember
Average flight time1 hr, 52 mins
Most popular airlineQatar Airways
Average flights per week25

Finding cheap flights from Great Falls International to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Great Falls International to Seattle is $306. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 52 minutes is the average flight time from Great Falls International to Seattle.
Qatar Airways, Horizon Air and Alaska Airlines fly direct from Great Falls International to Seattle.
As of August 2026, there are 25 flights per week flying from Great Falls International to Seattle.
The cheapest month to fly from Great Falls International to Seattle is usually September.
If you're flying from Great Falls International Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from $306.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Great Falls International Airport to Seattle on Wednesday, 16 September 2026.
Yes – the average flight time is 1 hour and 52 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.

In August, the average temperature is usually around 18°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Delta offers the cheapest flight tickets to Seattle.

Travelling from Great Falls International Airport (GTF) to Seattle: what you need to know

  • The average duration of a direct flight from Great Falls International Airport to Seattle is 1 hour 35 minutes.

  • The timezone in Seattle is UTC-8. The city is one hour behind Great Falls, where Great Falls International Airport is located.

  • Great Falls International Airport (GTF) to Seattle-Tacoma International Airport (SEA) is the most popular route, with six weekly departures to pick from. You can fly from GTF to SEA at 14:45 with Alaska Airlines.

  • For a smooth journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. That way, you won't have to rush to catch your GTF to Seattle flight.

  • During popular months such as July, it's wise to get to the airport earlier than usual. Plan to arrive two hours before domestic departures and four hours ahead of an international flight when you fly during high season in general.

  • Direct Great Falls International Airport to Seattle tickets are available for booking. Seattle-Tacoma International Airport (SEA) will be where your journey ends.

  • Book your favourite seat with Alaska Airlines. This popular carrier operates direct flights from Great Falls International Airport to Seattle.

  • The journey from central Great Falls to GTF takes about 25 minutes on public transport. If you ride-share, drive or get a taxi, you'll cover the 5 kilometres in 10 minutes or so, depending on traffic.

  • Have an early flight from Great Falls International Airport to Seattle? Avoid the hassle of rushing to the airport (and get some extra shut-eye) by choosing one of these hotels near GTF:

  • Great Falls International Airport maintains a strong on-time record, reducing the likelihood of delays. Departures from GTF make it to their destination as scheduled 85% of the time.

  • GTF's address is 2800 Terminal Drive.

How to find the cheapest flights from Great Falls International Airport (GTF) to Seattle

  • The lowest price we've seen for a one-way Great Falls International Airport to Seattle flight is $203. The cheapest price for a return flight is $306. Remember fares may change due to availability at the time of booking.

  • To pick up cheap flights from GTF to Seattle, reserve your journey one month before your planned departure.

  • Schedule your trip for June. That's the best month for scoring the biggest deals on Great Falls International Airport to Seattle tickets. If you're flexible with your travel dates, use the 'Whole month' tool to access the lowest price across each month.

  • You don't need to check back in every day to see if fares have dropped when you create a Price Alert. We'll let you know the moment there's an updated deal for cheap flights from GTF to Seattle.

  • Save money on your flight from Great Falls International Airport to Seattle with the help of our filters. Choose your ideal duration, departure time and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) is around 23 kilometres from central Seattle. If you're getting a taxi or a ride-share, the drive will take roughly 25 minutes.

  • Getting to the centre on public transport will take you around 35 minutes.

  • If you're coming in on a late flight from Great Falls International Airport to Seattle, nothing beats the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and relaxing soon after at one of these accommodation options near SEA:

  • For the lowest price, book your ride from Seattle-Tacoma International Airport around one week in advance of your flight from GTF to Seattle.

Seattle Paine Field International Airport (PAE)

  • After your flight from Great Falls International Airport to Seattle has hit the tarmac, you can reach the city centre in about 40 minutes by car. Central Seattle is roughly 40 kilometres from Seattle Paine Field International Airport (PAE).

  • If you choose to travel on public transport, you'll reach the centre in 1 hour 30 minutes or so.

  • After stepping off your GTF to Seattle flight, rest your head at a hotel close to PAE. These are some comfortable options that'll help you slip into relaxation mode:

  • Save time at the rental desk by completing your booking beforehand. Secure your ride from PAE in advance so you can just collect the keys and drive away.

King County International Airport (BFI)

  • Head to the city centre after your flight from Great Falls International Airport to Seattle has arrived. Central Seattle is around 11 kilometres from King County International Airport (BFI) and takes roughly 20 minutes to get to by car.

  • If you're using public transport, the journey will take you about 35 minutes.

  • Stay at a hotel close to BFI and get from baggage claim to your bed in a snap. Whether you have a late GTF to Seattle flight or just want to keep your travel plans simple, these stays are all about convenience:

  • Rental companies sometimes offer discounts for early bookings, so reserve your ride from BFI ahead of your flight from Great Falls International Airport to Seattle. A bit of planning goes a long way in savings.

Best time to go to Seattle

  • It's time to figure out your dates for your flight from Great Falls International Airport to Seattle. July is the busiest month for a trip to Seattle. If you like a more relaxed atmosphere, go in December.

  • Before locking in your Great Falls International Airport to Seattle plane ticket, think about the type of weather you enjoy. August is the warmest month in Seattle, with temperatures ranging from 12ºC (54ºF) to 28ºC (82ºF).

  • Search for cheap tickets from GTF to Seattle in February if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF) on average.

More about Seattle

  • After booking your flight from Great Falls International Airport to Seattle, choose a hotel that puts you where you want to be. Make one of these options your base for exploring Seattle:

  • Every great holiday has to include some sightseeing. Pike Place Market, Space Needle and Seattle Skyline are essential stops on your Seattle itinerary.

Explore more of the United States

  • Seattle is easy to fall in love with, but there are so many other corners of the United States just waiting to be discovered. About 241 kilometres south of Seattle, a trip to Portland will keep your itinerary packed. Start with popular sights like Portland Japanese Garden, Peninsula Park Rose Garden and Beyond Van Gogh Portland.

  • If you're interested in discovering another side of the United States, head for Spokane, about 370 kilometres east of Seattle. Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes are key reasons to visit.

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Prices shown on this page are estimated lowest prices only. Found in the last 12 days.