$224 Cheap Alaska Airlines flights Jacksonville (JAX) to Seattle (SEA)

You’ll discover affordable round-trip Alaska Airlines flights from $441 from JAX to SEA by sorting your results from “Price (lowest to highest)” on Expedia. Or look for options from $224 for a one-way trip.**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.

Search for one-way or round-trip flights to Seattle in January or February. You could find an affordable fare with Alaska Airlines during these off-peak travel months.

Start searching one to three months before your departure to score cheap fares on Alaska Airlines flights from Jacksonville Intl. Airport (JAX) to Seattle - Tacoma Intl. Airport (SEA). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get the timing right, and you can enjoy significant savings on domestic journeys.*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.

To find out if there’s a direct route from JAX to SEA with Alaska Airlines or other carriers, check the “Nonstop” filter when searching for tickets.

Sort your results by “Early Morning” and “Morning” to find the earliest departures from JAX to SEA. Setting off early means you’re 20% less likely to experience cancellations.**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.

Seattle - Tacoma Intl. Airport (SEA) is the main Seattle hub for Alaska Airlines flights from Jacksonville Intl. Airport (JAX).

Alaska Airlines makes traveling from JAX to SEA enjoyable with an excellent in-flight experience and top-tier customer service. You also have the chance to earn points with Mileage Plan. Remember to sign up to Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the type of ticket you purchased, a fee is typically charged if you cancel or change your booking more than 24 hours after it has been confirmed. To secure flexible fares, select our “No cancel fee” or “Changes included” filter while looking for flights. For additional information on canceling or modifying your reservation, head to “Trips,” select your flight and tick “Manage Booking.”