Washington Dulles to Boston (IAD → BOS). We are tracking 6 fares on this route.
Cheapest tracked fare $57 · typical price $150 · you save about $93 (62%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
—
2026-12-08
Direct
$57
United Airlines
2026-10-20
Direct
$58
—
2026-12-12
Direct
$60
United Airlines
2026-10-21
Direct
$72
—
2026-10-17
Direct
$86
United Airlines
2026-10-22
1 stop
$109
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 Boston get?
The cheapest fare we have tracked on this route is $57, compared with a typical $150 for a trip of this distance.
Is it cheaper to fly to Boston 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 Boston 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.