IAD to SAN from $307 in economy

ASAlaska Airlines, Inc.

Round Trip•Economy

IAD

Washington Dulles International Airport

Washington, United States

SAN

San Diego International Airport

San Diego, United States

$449 USD

-32%$307 USD

Verified 16 days ago

December 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$552 1$457 2$387 3$387 4$387 5$387 6$387 7$387 8$387 9$387 10$414 11$387 12$414 13$387 14$387 15$387 16$407 17$484 18$647 19$679 20$564 21$600 22$547 23$546 24$426 25$407 26$577 27$743 28$507 29$507 30$507 31$427 1$422 2$438 3$466

Rare Availability

5% of dates checked are available within 10% of the lowest price

Friday, December 18th, 2026

6 round-trip options

Returning

Fri, Dec 25, 2026•7 Day Trip

$687 USD

Google Flights

Returning

Sun, Dec 27, 2026•9 Day Trip

$877 USD

Google Flights

Returning

Mon, Dec 28, 2026•10 Day Trip

$697 USD

Google Flights

Returning

Tue, Dec 29, 2026•11 Day Trip

$647 USD

Google Flights

Returning

Wed, Dec 30, 2026•12 Day Trip

$647 USD

Google Flights

Returning

Fri, Jan 1, 2027•14 Day Trip

$666 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

Friday, December 18th, 2026