Cheap flights from Washington Dulles to San Francisco
Washington Dulles to San Francisco (IAD → SFO). We are tracking 6 fares on this route.
Cheapest tracked fare $121 · typical price $293 · you save about $172 (59%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
Frontier Airlines
2026-09-15
1 stop
$121
Frontier Airlines
2026-09-09
1 stop
$125
Frontier Airlines
2026-09-26
1 stop
$142
Frontier Airlines
2026-09-28
1 stop
$145
American Airlines
2026-12-05
1 stop
$180
American Airlines
2026-11-05
1 stop
$208
Could you save more?
The airport you were going to fly from is often not the cheapest one. Compare every airport in a region against each other, or check whether a multi-day stopover beats the direct fare.
How cheap can flights from Washington Dulles to San Francisco get?
The cheapest fare we have tracked on this route is $121, compared with a typical $293 for a trip of this distance.
Is it cheaper to fly to San Francisco from a different airport?
Often, yes. Fares out of secondary airports are frequently cheaper than the obvious hub, but they are the ones most likely to be missing from a normal search. Our reverse search compares every airport in a region against each other so the cheaper departure point is not hidden.
Could a stopover make Washington Dulles to San Francisco cheaper?
Sometimes. On thin long-haul routes a two-leg trip with a multi-day stopover can beat the direct fare, and occasionally a direct fare is not sold at all. Our detour search prices those routings against the direct flight.