SAN to IAD from $307 in economy

UAUnited Airlines

Round Trip•Economy

SAN

San Diego International Airport

San Diego, United States

IAD

Washington Dulles International Airport

Washington, United States

$418 USD

-27%$307 USD

Verified 13 days ago

December 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$516 1$387 2$387 3$387 4$387 5$387 6$387 7$387 8$397 9$387 10$387 11$444 12$413 13$455 14$413 15$413 16$413 17$416 18$495 19$488 20$416 21$387 22$387 23$397 24$387 25$387 26$397 27$455 28$397 29$455 30$387 31$387 1$397 2$720 3$536

Rare Availability

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

Friday, December 18th, 2026

6 round-trip options

Returning

Wed, Dec 23, 2026•5 Day Trip

$625 USD

Google Flights

Returning

Fri, Dec 25, 2026•7 Day Trip

$527 USD

Google Flights

Returning

Sun, Dec 27, 2026•9 Day Trip

$820 USD

Google Flights

Returning

Mon, Dec 28, 2026•10 Day Trip

$610 USD

Google Flights

Returning

Tue, Dec 29, 2026•11 Day Trip

$565 USD

Google Flights

Returning

Thu, Dec 31, 2026•13 Day Trip

$495 USD

Google Flights

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

San Diego International Airport

Washington Dulles International Airport

December 2026

Friday, December 18th, 2026