Washington (IAD) to San Diego (SAN) flight deal from $237 USD in economy class

ASAlaska Airlines, Inc.

Round Trip•Economy

IAD

Washington Dulles International Airport

Washington, United States

SAN

San Diego International Airport

San Diego, United States

$394 USD

-40%$237 USD

Verified Nov 30, 2025 at 10:18 AM

December 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1$672 2$672 3$661 4$661 5$661 6$661 7$561 8$561 9$561 10$532 11$482 12$482 13$482 14$397 15$397 16$397 17$427 18$527 19$542 20$622 21$527 22$477 23$482 24$357 25$407 26$662 27$803 28$662 29$482 30$407 31$307 1$307 2$357 3$357 4$357

Limited Availability

14% of dates checked are available within 10% of the lowest price

Tuesday, December 23rd, 2025

10 round-trip options

Returning

Sun, Dec 28, 2025•5 Day Trip

$807 USD

Google Flights

Returning

Mon, Dec 29, 2025•6 Day Trip

$727 USD

Google Flights

Returning

Tue, Dec 30, 2025•7 Day Trip

$652 USD

Google Flights

Returning

Wed, Dec 31, 2025•8 Day Trip

$602 USD

Google Flights

Returning

Thu, Jan 1, 2026•9 Day Trip

$652 USD

Google Flights

Returning

Fri, Jan 2, 2026•10 Day Trip

$807 USD

Google Flights

Returning

Sat, Jan 3, 2026•11 Day Trip

$1,013 USD

Google Flights

Returning

Sun, Jan 4, 2026•12 Day Trip

$807 USD

Google Flights

Returning

Mon, Jan 5, 2026•13 Day Trip

$552 USD

Google Flights

Returning

Tue, Jan 6, 2026•14 Day Trip

$482 USD

Google Flights