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

Sunday, August 9th, 2026

4 round-trip options

Returning
Fri, Aug 14, 2026•5 Day Trip
$416 USD
Google Flights
Returning
Sun, Aug 16, 2026•7 Day Trip
$416 USD
Google Flights
Returning
Tue, Aug 18, 2026•9 Day Trip
$416 USD
Google Flights
Returning
Thu, Aug 20, 2026•11 Day Trip
$427 USD
Google Flights