Las Vegas to Washington Dulles (LAS → IAD). We are tracking 16 fares on this route.
Cheapest tracked fare $67 · typical price $143 · you save about $76 (53%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
—
2026-12-01
1 stop
$67
Frontier
2026-10-21
Direct
$74
—
2027-02-02
1 stop
$76
Frontier Airlines
2026-10-20
Direct
$82
—
2026-11-18
1 stop
$92
—
2026-11-11
1 stop
$92
—
2026-11-04
1 stop
$93
Frontier Airlines
2026-10-22
Direct
$94
—
2026-11-17
1 stop
$102
Frontier
2026-11-21
Direct
$104
Frontier Airlines
2027-01-28
1 stop
$113
Frontier Airlines
2027-02-04
1 stop
$113
—
2026-10-28
1 stop
$114
Frontier Airlines
2027-01-30
1 stop
$116
Frontier Airlines
2027-02-03
1 stop
$117
—
2026-12-02
1 stop
$119
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 Las Vegas to Washington Dulles get?
The cheapest fare we have tracked on this route is $67, compared with a typical $143 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 Las Vegas 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.