SFO to SEA from $117 in economy – flightdeals.net

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United Airlines

UAUnited Airlines

Round Trip•Economy

San Francisco International Airport

San Francisco, United States

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

$231 USD

-49%$117 USD

Verified about 14 hours ago

December 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$195 1$137 2$137 3$137 4$137 5$137 6$157 7$137 8$137 9$137 10$137 11$157 12$137 13$206 14$215 15$207 16$157 17$157 18$258 19$215 20$340 21$215 22$339 23$379 24$157 25$206 26$215 27$360 28$215 29$227 30$167 31$157 1$206 2$215 3$242

Extremely Rare Availability

4% of dates checked are available within 10% of the lowest price

Friday, December 18th, 2026

2 round-trip options

Returning

Wed, Dec 23, 2026•5 Day Trip

$258 USD

Returning

Wed, Dec 30, 2026•12 Day Trip

$258 USD