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 10 hours ago

September 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$157 1$117 2$117 3$157 4$206 5$117 6$157 7$321 8$221 9$117 10$225 11$157 12$117 13$157 14$196 15$117 16$117 17$157 18$157 19$117 20$157 21$178 22$117 23$117 24$157 25$157 26$117 27$185 28$157 29$117 30$117 1$157 2$157 3$117 4$157

Rare Availability

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

Monday, September 21st, 2026

1 round-trip options

Returning

Mon, Sep 28, 2026•7 Day Trip

$178 USD