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

View £84 flight on Wed, 27 May 2026Opens in a new window

Flight 1

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 (GTF) to Seattle (SEA)

Prices were available within the past 7 days and start at £84 for one-way flights and £139 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, 23 May - Sat, 30 May
GTF
Great Falls
SEA
Seattle
£139 Return, found 1 day ago
£139
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 23 May from Great Falls to Seattle, returning Sat, 30 May, priced at £139 found 1 day ago
Alaska Airlines
Mon, 18 May - Mon, 25 May
GTF
Great Falls
SEA
Seattle
£153 Return, found 4 days ago
£153
Return
found 4 days ago
Select Alaska Airlines flight, departing Mon, 18 May from Great Falls to Seattle, returning Mon, 25 May, priced at £153 found 4 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
GTF
Great Falls
SEA
Seattle
£191 Return, found 4 days ago
£191
Return
found 4 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Great Falls to Seattle, returning Wed, 27 May, priced at £191 found 4 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
GTF
Great Falls
SEA
Seattle
£194 Return, found 4 days ago
£194
Return
found 4 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Great Falls to Seattle, returning Wed, 27 May, priced at £194 found 4 days ago
Alaska Airlines
Mon, 18 May - Mon, 25 May
GTF
Great Falls
SEA
Seattle
£206 Return, found 4 days ago
£206
Return
found 4 days ago
Select Alaska Airlines flight, departing Mon, 18 May from Great Falls to Seattle, returning Mon, 25 May, priced at £206 found 4 days ago
Alaska Airlines
Mon, 18 May - Mon, 25 May
GTF
Great Falls
SEA
Seattle
£209 Return, found 4 days ago
£209
Return
found 4 days ago
Select Alaska Airlines flight, departing Mon, 18 May from Great Falls to Seattle, returning Mon, 25 May, priced at £209 found 4 days ago
Alaska Airlines
Sun, 17 May - Sun, 24 May
GTF
Great Falls
SEA
Seattle
£247 Return, found 4 days ago
£247
Return
found 4 days ago
Select Alaska Airlines flight, departing Sun, 17 May from Great Falls to Seattle, returning Sun, 24 May, priced at £247 found 4 days ago
Alaska Airlines
Thu, 14 May - Thu, 21 May
GTF
Great Falls
SEA
Seattle
£262 Return, found 4 days ago
£262
Return
found 4 days ago
Select Alaska Airlines flight, departing Thu, 14 May from Great Falls to Seattle, returning Thu, 21 May, priced at £262 found 4 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
GTF
Great Falls
SEA
Seattle
£272 Return, found 4 days ago
£272
Return
found 4 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Great Falls to Seattle, returning Wed, 27 May, priced at £272 found 4 days ago
Alaska Airlines
Thu, 14 May - Thu, 21 May
GTF
Great Falls
SEA
Seattle
£277 Return, found 4 days ago
£277
Return
found 4 days ago
Select Alaska Airlines flight, departing Thu, 14 May from Great Falls to Seattle, returning Thu, 21 May, priced at £277 found 4 days ago

Frequently asked questions

How much does a flight from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
One-way flights typically cost between £393 and £1,593 and return flights often range between £393 and £1,593. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
What is the cheapest month to fly from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
January is typically the cheapest month to fly from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), with average return fares of approximately £294. This is about 27% lower than the average price throughout the year. January often sees lower prices as it falls after the busy holiday season, leading to reduced demand and more competitive airline pricing. Other cheap months to fly from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) include February and May.
How do I find cheap flights from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best airline to fly with from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will differ from traveller to traveller. If you like to fly early, AS offers early morning flights. If price is the most important factor, AS typically offers the lowest fares. DL offers the most daily flights from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
When planning your trip from Great Falls, MT (GTF) to Seattle, WA (SEA), you'll find that January and May are typically the cheapest months to fly, with average return flight prices around £294. While these months offer great value, March and October are the most popular times to travel, meaning you'll have plenty of flight options and schedules to choose from. Consider balancing these factors to find the best time that suits your travel needs, based on booking data from the past year.
How many flights per day from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 6 connecting flights per day from Great Falls Intl. (GTF) to Seattle - Tacoma Intl. (SEA). Some common connection points include Salt Lake City Intl. (SLC), Denver Intl. (DEN), and O'Hare Intl. (ORD).
What is the earliest flight from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Great Falls, MT (GTF-Great Falls Intl.) (GTF) to Seattle, WA (SEA-Seattle - Tacoma Intl.) (SEA) typically departs at approximately 5:20 AM local time, operated by Delta. This is a seasonal service active in February. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll typically find the most flights from Great Falls Intl. (GTF) to Seattle - Tacoma Intl. (SEA) on a Sunday, with around 6 flights available. This gives you a good selection for your travel plans. Major airlines on this route include Delta Air Lines, United Airlines, and Alaska Airlines.
What are the most popular departure times for flights from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Great Falls Intl. (GTF) to Seattle - Tacoma Intl. (SEA) are in the evening, from 6pm to 9pm. About 27% of passengers prefer this time window. Many major carriers, including Alaska Airlines and Delta Air Lines, offer flights during this window. These times work well because you can finish your day in Great Falls before your flight, and you'll arrive in Seattle with time to settle in.
How long does it take to fly from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Flying nonstop from GTF to SEA takes around 2 hours, with the route covering approximately 511 miles. Flights with a layover typically take 2 hours 50 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Select the "Business class" and "First class" filters when looking for GTF to SEA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle from Great Falls Intl. (GTF)?
From Great Falls Intl. (GTF), you can fly directly into Seattle - Tacoma Intl. (SEA) to reach Seattle. Some flights may connect through major hubs like Denver Intl. (DEN), Salt Lake City Intl. (SLC) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Great Falls, MT (GTF-Great Falls Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Great Falls Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
£139
Distance
817 km
Average flight time
1 hour 50 mins

Book with confidence

Compare flights from Great Falls to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Great Falls to Seattle. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Great Falls Intl. to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Great Falls Intl. (GTF) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Great Falls to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Great Falls Intl. to Seattle - Tacoma Intl. start at just £139 and range up to £299.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Great Falls and Seattle
  • booking your flight during May, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Great Falls to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Great Falls Intl. to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Great Falls to Seattle easily and book with confidence

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