Washington Dulles to Las Vegas (IAD → LAS). We are tracking 12 fares on this route.
Cheapest tracked fare $80 · typical price $263 · you save about $183 (70%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
Frontier Airlines
2026-09-07
Direct
$80
Frontier Airlines
2026-09-20
Direct
$80
Frontier Airlines
2026-10-06
Direct
$83
Frontier Airlines
2026-09-08
Direct
$122
Frontier Airlines
2026-09-21
Direct
$125
United Airlines
2026-10-10
Direct
$126
United Airlines
2026-10-21
Direct
$132
Frontier Airlines
2026-10-14
2 stops
$135
United Airlines
2026-10-07
1 stop
$136
Frontier Airlines
2026-10-12
2 stops
$146
Frontier Airlines
2026-09-24
2 stops
$163
Frontier Airlines
2026-10-15
1 stop
$165
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 Las Vegas get?
The cheapest fare we have tracked on this route is $80, compared with a typical $263 for a trip of this distance.
Is it cheaper to fly to Las Vegas 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 Las Vegas 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.