San Francisco (SFO) to Washington (IAD) flight deal in economy from $357

United AirlinesUAUnited Airlines
Round Trip•Economy
United StatesSFO

San Francisco International Airport

San Francisco, United States
United StatesIAD

Washington Dulles International Airport

Washington, United States
$448 USD
-20%$357 USD
Verified 13 days ago
Fair Availability
25% of dates checked are available within 10% of the lowest price

Thursday, August 20th, 2026

4 round-trip options

Returning
Tue, Aug 25, 2026•5 Day Trip
$429 USD
Google Flights
Returning
Thu, Aug 27, 2026•7 Day Trip
$453 USD
Google Flights
Returning
Sat, Aug 29, 2026•9 Day Trip
$429 USD
Google Flights
Returning
Mon, Aug 31, 2026•11 Day Trip
$447 USD
Google Flights