Washington (DCA) to San Diego (SAN) cheap flight deal from $139 USD in economy class – flightdeals.net

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United Airlines

UAUnited Airlines

One Way•Economy

Ronald Reagan Washington National Airport

Washington, United States

San Diego International Airport

San Diego, United States

$197 USD

-29%$139 USD

Verified Sep 19, 2025 at 3:33 PM

October 2025

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29$329 30$329 1$329 2$262 3$217 4$217 5$249 6$217 7$217 8$217 9$249 10$280 11$139 12$179 13$183 14$139 15$139 16$159 17$159 18$139 19$219 20$179 21$139 22$139 23$159 24$159 25$139 26$188 27$159 28$139 29$139 30$159 31$159 1 2

Limited Availability

18% of dates checked are available within 10% of the lowest price

Wednesday, October 29th, 2025

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