$217 Cheap Flights from Gustavus (GST) to Seattle (SEA)

View $217 flight on Tue, Jun 10, 2025Opens in a new window

Popular airlines from Gustavus, AK (GST) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Gustavus to Seattle (GST-SEA)

Prices were available within the past 7 days and start at $217 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Gustavus (GST) to Seattle (SEA)
Origin airport
Gustavus
Destination airport
Seattle - Tacoma Intl.
Distance
938 mi

Gustavus to Seattle Flights

The cheapest times to fly from Gustavus 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 Gustavus to Seattle are during the month of . You can find some of the cheapest flights from Gustavus to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Gustavus to Seattle

Sunday is one of the best days to book for cheap flights from Gustavus 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 Gustavus 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 Gustavus to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $217 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 Gustavus 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 Gustavus 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

Is it cheaper to buy a plane ticket from GST to Sea-Tac Airport last minute?
When it’s time to book your flights, being prepared pays off. While it’s possible to find a last-minute deal on a Gustavus Airport to Sea-Tac Airport flight, prices usually don’t get cheaper as the departure date nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to book a domestic flight is between 28 – 35 days in advance. For international travel it’s between three and four months.
What airports do you fly into for Seattle from Gustavus?
With Seattle - Tacoma Intl. Airport (SEA), Renton Municipal Airport (RNT) and Boeing Field Airport (BFI) to select from, flying from Gustavus to Seattle is simple. The city’s main gateway, Seattle - Tacoma Intl. Airport (SEA), is about 12 mi south of the downtown area. Along with ticket costs, consider factors like train or bus options from the airport and the distance to your hotel when deciding where to touch down. Get your Seattle vacation off to a flying start by visiting Space Needle and Pike Place Market.
Can I change the date of my flight from Gustavus Airport (GST) to SEA?
Plans can get upended, so Expedia is here to help make amending your trip as easy as possible. To start, access your Gustavus Airport (GST) to SEA itinerary through the Expedia Trips portal and read the fare conditions about change fees or other charges. If you purchased your fare in the last 24 hours, some airlines allow you to cancel at no cost and organize new flights. If you booked your fare more than 24 hours ago, contact us through our Customer Service portal to see how we can help.

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