Cheap flights from San Francisco to Washington Dulles
San Francisco to Washington Dulles (SFO → IAD). We are tracking 13 fares on this route.
Cheapest tracked fare $93 · typical price $185 · you save about $92 (50%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
—
2026-11-09
1 stop
$93
—
2026-10-21
1 stop
$98
—
2026-10-24
1 stop
$98
Frontier Airlines
2026-11-16
3 stops
$99
Frontier Airlines
2026-11-15
3 stops
$106
—
2026-10-25
1 stop
$131
—
2026-10-22
1 stop
$134
Frontier Airlines
2026-11-18
3 stops
$136
Frontier Airlines
2026-11-14
1 stop
$146
Frontier Airlines
2026-10-23
1 stop
$149
Frontier Airlines
2026-12-14
2 stops
$156
—
2027-01-20
1 stop
$192
—
2027-02-02
1 stop
$192
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 San Francisco to Washington Dulles get?
The cheapest fare we have tracked on this route is $93, compared with a typical $185 for a trip of this distance.
Is it cheaper to fly to Washington Dulles 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 San Francisco to Washington Dulles 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.