Washington Dulles to Harry Reid International
2060 miles great-circle distance, typically flown in 4h 33m with 5 airlines operating direct service from Washington Dulles (IAD) to Harry Reid International (LAS). Cheapest fares are usually in January (around $249 return), with peak prices in August (around $747). Departures on a Tuesday tend to undercut weekend prices on this corridor.
Flying from Washington Dulles
Washington Dulles International is United Airlines' Mid-Atlantic hub and the larger of the two Washington-region airports. Metro's Silver Line extension opened in 2022, running from the airport's underground station directly to downtown Washington DC in around 50 minutes for $7. International long-haul through IAD is the deepest of any DC-area airport, with United, BA, Virgin Atlantic, Lufthansa, Air France, Qatar, Emirates and Ethiopian all running daily flights to global hubs.
Arriving in Las Vegas
Las Vegas's Harry Reid International is 5 miles south of the central Strip — a five-minute taxi ride to most resorts. There is no rail; the airport shuttle, taxis, monorail-shuttle hybrid and rideshare handle the volume. Convention-week demand spikes (CES in January, NAB in April, Magic Apparel in February) push fares 2–3× their normal levels. Tuesday and Wednesday departures and arrivals are routinely the cheapest.
Who flies IAD to LAS?
| Airline | IATA | Flight time | Cabin |
| United Airlines | UA | 4h 33m | Economy |
| Frontier Airlines | F9 | 4h 33m | Economy |
| American Airlines | AA | 4h 33m | Economy |
| Delta Air Lines | DL | 4h 33m | Economy |
| JetBlue Airways | B6 | 4h 33m | Economy |
5 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Best time to fly IAD→LAS
Synthesised from 12-month price aggregates. Cheapest months in green, peak in red.
Estimated baseline. Prices update on a 30-day cadence as Travelpayouts data refreshes. Cheapest day-of-week typically Tuesday.
Washington to Las Vegas FAQs
Direct flights from Washington Dulles (IAD) to Harry Reid International (LAS) take approximately 4h 33m for the 2060-mile journey, plus 30–60 minutes of taxi, climb and descent. Total airport-to-airport time depends on cruise winds and air-traffic queueing on approach.
January is typically the cheapest month on this route, with one-way fares from $249. August is the peak — expect prices 2–3× higher. Book 4–8 weeks ahead for best fares; last-minute prices on this corridor rise sharply inside two weeks of departure.
5 carriers operate direct service from Washington Dulles (IAD) to Harry Reid International (LAS): United Airlines, Frontier Airlines, American Airlines, Delta Air Lines and JetBlue Airways. Frequencies vary by season and carrier — United Airlines typically operates the highest weekly count on this corridor.
No — United States is domestic travel for US citizens. A US passport is not required for the 50 states, DC or US territories (Puerto Rico, US Virgin Islands, Guam, American Samoa, Northern Mariana Islands), though Real ID-compliant ID is required at TSA from May 2025.
Harry Reid International (LAS) is the primary international airport for Las Vegas. Allow 30–60 minutes for the ground transfer by train, express bus, taxi or rideshare depending on traffic and time of day. See the airport's official website for current train and shuttle timetables.