Great-circle route IAD ↔ LAS. Faint dots are other airports, for geographic context. Download this map — free to reuse with a link back to this page.
Frequencies below are per direction, from our most recent schedule sample. The two directions are not identical — that is normal on scheduled routes.
| Direction | Frequency | Days | Airlines |
|---|---|---|---|
| IAD → LAS Washington to Las Vegas |
22/wk | Daily | Frontier Airlines, United Airlines |
| LAS → IAD Las Vegas to Washington |
21/wk | Daily | Frontier Airlines, United Airlines |
Where a direction shows “—” we track it as an operating nonstop but hold no schedule sample for it — we would rather show nothing than guess.
In 2025, airlines reported 382,958 passengers on 2,550 flights between IAD and LAS — about 1,050 a day — filling 79% of the 482,849 seats flown. United Air Lines Inc. carried the most passengers (89%).
Source: US DOT T-100 segment reports — actual airline-reported traffic, scheduled service only, both directions combined. Cargo and charter flights excluded.
2 airlines fly the IAD–LAS nonstop, including Frontier Airlines, United Airlines.
Recent scheduled departures on this route have used the Boeing 737-900, Airbus A320, Boeing 737-800, Boeing 737.
Aircraft assignments change by season and by time of day.
On a long east–west route like this one the two directions do not take the same time. Aircraft flying eastbound ride the mid-latitude jet stream and typically arrive earlier than the westbound leg, which flies into it. The difference is commonly 30 to 90 minutes on transatlantic and transpacific flights, and it varies by season. The estimate above does not model wind — treat it as a midpoint and check the airline's own timetable for the block time on your date.
The distance between Washington Dulles International Airport and McCarran International Airport is 2,061 miles, or 3,317 kilometres.
| Great-circle distance | 2,061 mi |
| Kilometres | 3,317 km |
| Nautical miles | 1,791 nmi |
Measured airport to airport. The actual track is longer — aircraft follow airways, avoid restricted airspace and route around weather.
Yes. 2 airlines fly the route nonstop, with about 43 departures a week across both directions. The route is in our live nonstop dataset, last seeded 2026-07-07.
About 4h 34m in the air. That is a great-circle estimate from the 2,061-mile distance, not a scheduled block time — an airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
About 22 a week from Washington to Las Vegas and 21 a week from Las Vegas to Washington, from our most recent schedule sample.
Frontier Airlines, United Airlines.
In 2025, airlines reported 382,958 passengers on 2,550 scheduled flights between IAD and LAS — about 1,050 a day — filling 79% of the seats flown. Source: US DOT T-100 segment reports, both directions combined.
Recent scheduled departures have used the Boeing 737-900, Airbus A320, Boeing 737-800, Boeing 737. Assignments change by season and by time of day.
