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

Friday, August 28th, 2026

4 round-trip options

Returning
Wed, Sep 2, 2026•5 Day Trip
$381 USD
Google Flights
Returning
Fri, Sep 4, 2026•7 Day Trip
$410 USD
Google Flights
Returning
Sun, Sep 6, 2026•9 Day Trip
$416 USD
Google Flights
Returning
Tue, Sep 8, 2026•11 Day Trip
$381 USD
Google Flights