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

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United Airlines

UAUnited Airlines

Round Trip•Economy

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

San Francisco International Airport

San Francisco, United States

$240 USD

-51%$117 USD

Verified about 21 hours ago

December 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$297 1$176 2$137 3$137 4$137 5$137 6$157 7$221 8$137 9$137 10$137 11$157 12$137 13$157 14$206 15$137 16$157 17$157 18$225 19$215 20$227 21$206 22$157 23$167 24$157 25$206 26$215 27$227 28$215 29$185 30$167 31$157 1$206 2$215 3$227

Rare Availability

6% of dates checked are available within 10% of the lowest price

Tuesday, December 15th, 2026

3 round-trip options

Returning

Sun, Dec 20, 2026•5 Day Trip

$271 USD

Returning

Sat, Dec 26, 2026•11 Day Trip

$205 USD

Returning

Tue, Dec 29, 2026•14 Day Trip

$137 USD