Washington (IAD) to San Diego (SAN) 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 Diego International Airport

San Diego, United States

$196 USD

-29%$139 USD

Verified Nov 29, 2025 at 10:58 AM

January 2026

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29 30 31 1$169 2$189 3$207 4$217 5$179 6$139 7$139 8$159 9$159 10$139 11$159 12$159 13$139 14$139 15$159 16$159 17$139 18$159 19$159 20$139 21$139 22$159 23$159 24$139 25$159 26$167 27$139 28$139 29$159 30$159 31$139 1$159

Limited Availability

12% of dates checked are available within 10% of the lowest price

Tuesday, January 13th, 2026

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