SAN to DCA from $322 in economy

UAUnited Airlines

Round Trip•Economy

SAN

San Diego International Airport

San Diego, United States

DCA

Ronald Reagan Washington National Airport

Washington, United States

$443 USD

-27%$322 USD

Verified 14 days ago

December 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$513 1$407 2$407 3$407 4$407 5$407 6$407 7$407 8$407 9$407 10$407 11$407 12$407 13$458 14$513 15$456 16$407 17$407 18$513 19$419 20$447 21$407 22$407 23$513 24$407 25$407 26$407 27$526 28$407 29$407 30$407 31$407 1$407 2$560 3$517

Rare Availability

5% 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

$447 USD

Google Flights

Returning

Sat, Dec 26, 2026•6 Day Trip

$802 USD

Google Flights

Returning

Mon, Dec 28, 2026•8 Day Trip

$568 USD

Google Flights

Returning

Tue, Dec 29, 2026•9 Day Trip

$536 USD

Google Flights

Returning

Sat, Jan 2, 2027•13 Day Trip

$477 USD

Google Flights

Returning

Sun, Jan 3, 2027•14 Day Trip

$456 USD

Google Flights

San Diego (SAN) to Washington (DCA) flight deal in economy from $322

San Diego International Airport

Ronald Reagan Washington National Airport

December 2026

Sunday, December 20th, 2026