IAD to SAN from $307 in economy

UAUnited Airlines

Round Trip•Economy

IAD

Washington Dulles International Airport

Washington, United States

SAN

San Diego International Airport

San Diego, United States

$420 USD

-27%$307 USD

Verified 15 days ago

December 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$476 1$476 2$397 3$444 4$421 5$387 6$387 7$387 8$387 9$387 10$387 11$387 12$387 13$387 14$387 15$387 16$444 17$516 18$581 19$516 20$476 21$476 22$498 23$536 24$455 25$413 26$561 27$681 28$521 29$476 30$407 31$407 1$387 2$455 3$444

Rare Availability

7% of dates checked are available within 10% of the lowest price

Sunday, December 20th, 2026

6 round-trip options

Returning

Fri, Dec 25, 2026•5 Day Trip

$538 USD

Google Flights

Returning

Sun, Dec 27, 2026•7 Day Trip

$543 USD

Google Flights

Returning

Tue, Dec 29, 2026•9 Day Trip

$543 USD

Google Flights

Returning

Wed, Dec 30, 2026•10 Day Trip

$476 USD

Google Flights

Returning

Thu, Dec 31, 2026•11 Day Trip

$476 USD

Google Flights

Returning

Sat, Jan 2, 2027•13 Day Trip

$819 USD

Google Flights

Washington (IAD) to San Diego (SAN) flight deal in economy from $307

Washington Dulles International Airport

San Diego International Airport

December 2026

Sunday, December 20th, 2026