Cheap Spirit Airlines flights Seattle (SEA) to San Jose (SJC)

Scoring cheap one-way Spirit Airlines flights from SEA to SJC on Expedia is easy — just filter by "Price (lowest to highest)." Alternatively, check out our affordable return fares for your next break.**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.

Begin your search one to three months ahead of your travel date to score cheap fares on Spirit Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Norman Y. Mineta San Jose Intl. Airport (SJC). 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 cut 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 your timing right, and you can enjoy significant savings on domestic trips.*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 the earliest departures from SEA to SJC with Spirit Airlines, filter your results by "Early Morning" and "Morning." Booking an early flight usually means you'll experience fewer 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.

With a rewarding loyalty program, Spirit Airlines is a popular choice for many travelers journeying from SEA to SJC. Plus, if you're a Free Spirit and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.