$234 Cheap Alaska Airlines flights Seattle (SEA) to Gustavus (GST)

Make use of the “Price (lowest to highest)” filter on Expedia to find cheap Alaska Airlines return flights from $498 from SEA to GST. Affordable one-way fares from $234 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

It’s generally cheaper to travel from SEA to GST with Alaska Airlines in the off-season when there’s less demand. Organizing your vacation outside of major holidays and school breaks could also help you land better deals on flights.

To find cheap Alaska Airlines fares from Seattle - Tacoma Intl. Airport (SEA) to Gustavus Airport (GST), start searching one to three months before your intended departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the overall cost. Sunday is generally the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Enter your dates, click search and select the “Nonstop” filter on Expedia to find any direct flights from SEA to GST with Alaska Airlines or another carrier.

Filter your results by “Morning” and “Early Morning” to browse the earliest departures from SEA to GST. Setting off early means flight cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Gustavus arrive at Gustavus Airport (GST). This is the main gateway to this city.

With an excellent in-flight experience and a rewarding loyalty program, Alaska Airlines is a favorite for many travelers heading from SEA to GST. What’s more, if you’re a Mileage Plan and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can go toward future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are usually free within 24 hours of making a booking, but your airline may charge a fee after that time. For more details about modifying your reservation, check out your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to change your plans without extra charges, apply the “Changes included” and “No cancel fee” filters when organizing your trip.