Washington (IAD) to San Francisco (SFO) cheap flight deal from $139 USD in economy class – flightdeals.net

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United Airlines

UAUnited Airlines

One Way•Economy

Washington Dulles International Airport

Washington, United States

San Francisco International Airport

San Francisco, United States

$196 USD

-29%$139 USD

Verified Sep 22, 2025 at 6:07 AM

October 2025

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29$262 30$262 1$286 2$286 3$286 4$286 5$286 6$217 7$217 8$217 9$272 10$282 11$272 12$299 13$174 14$139 15$139 16$179 17$159 18$139 19$159 20$159 21$139 22$139 23$159 24$159 25$139 26$227 27$159 28$139 29$139 30$159 31$159 1 2

Limited Availability

17% of dates checked are available within 10% of the lowest price

Wednesday, October 22nd, 2025

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