Washington to San Francisco
IADSFO
Fly from Washington to San Francisco starting at USD 75 with Frontier Airlines.
Best fare available on Aug 26, 2026.
Limited seats. Better plans. Book before it's gone.
Washington to San Francisco cheapest flights this week
Washington to San Francisco monthly flight fare trend
Aug
from USD 75
Sep
from USD 118
Oct
from USD 143
Nov
from USD 167
Dec
from USD 180
Jan
No flights
Airport Details
Origin
Washington
Washington Dulles International Airport (IAD)
Dulles, IAD
Zone
New York
Elev
312 ft
Destination
San Francisco
San Francisco International Airport (SFO)
San Francisco, SFO
Zone
Los Angeles
Elev
13 ft
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