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Cheap Flights from Washington D.C. (IAD) to Las Vegas (LAS)

Compare Washington Dulles to Las Vegas Harry Reid International flight deals

Find the cheapest month or even day of the year to fly to Las Vegas Harry Reid International

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Flight deals from Washington Dulles to Las Vegas Harry Reid International

Looking for a cheap last-minute deal or the best return flight from Washington Dulles to Las Vegas Harry Reid International? Find the lowest prices on one-way and return tickets right here.
Las Vegas.$202 per passenger.Departing Thu, 14 Aug, returning Fri, 22 Aug.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Washington Dulles on Thu, 14 Aug, arriving in Las Vegas Harry Reid International.Inbound direct flight with Frontier Airlines departs from Las Vegas Harry Reid International on Fri, 22 Aug, arriving in Washington Dulles.Price includes taxes and charges.From $202, select.
Las Vegas.$267 per passenger.Departing Sat, 1 Nov, returning Sat, 1 Nov.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Sat, 1 Nov, arriving in Las Vegas Harry Reid International.Inbound direct flight with United departs from Las Vegas Harry Reid International on Sat, 1 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $267, select.
Las Vegas.$275 per passenger.Departing Wed, 29 Oct, returning Sat, 1 Nov.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Wed, 29 Oct, arriving in Las Vegas Harry Reid International.Inbound direct flight with United departs from Las Vegas Harry Reid International on Sat, 1 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $275, select.
Las Vegas.$275 per passenger.Departing Sat, 11 Oct, returning Fri, 17 Oct.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Sat, 11 Oct, arriving in Las Vegas Harry Reid International.Inbound direct flight with United departs from Las Vegas Harry Reid International on Fri, 17 Oct, arriving in Washington Dulles.Price includes taxes and charges.From $275, select.
Las Vegas.$275 per passenger.Departing Sat, 1 Nov, returning Tue, 2 Dec.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Sat, 1 Nov, arriving in Las Vegas Harry Reid International.Inbound direct flight with United departs from Las Vegas Harry Reid International on Tue, 2 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $275, select.
Las Vegas.$275 per passenger.Departing Tue, 30 Sep, returning Sat, 4 Oct.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Tue, 30 Sep, arriving in Las Vegas Harry Reid International.Inbound direct flight with United departs from Las Vegas Harry Reid International on Sat, 4 Oct, arriving in Washington Dulles.Price includes taxes and charges.From $275, select.
Las Vegas.$275 per passenger.Departing Sat, 30 Aug, returning Tue, 2 Sep.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Sat, 30 Aug, arriving in Las Vegas Harry Reid International.Inbound direct flight with United departs from Las Vegas Harry Reid International on Tue, 2 Sep, arriving in Washington Dulles.Price includes taxes and charges.From $275, select.
Las Vegas.$275 per passenger.Departing Wed, 27 Aug, returning Wed, 3 Dec.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Wed, 27 Aug, arriving in Las Vegas Harry Reid International.Inbound direct flight with United departs from Las Vegas Harry Reid International on Wed, 3 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $275, select.

Find the cheapest month to fly from Washington Dulles to Las Vegas Harry Reid International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to Las Vegas Harry Reid International flights are currently cheapest in August.
Jul
from $451
Aug
from $202
Sep
from $275
Oct
from $275
Nov
from $267
Dec
from $424
Jan
from $451
Feb
from $623
Mar
from $717
Apr
from $731
May
from $732
Jun
from $732

Direct flights from Washington Dulles to Las Vegas Harry Reid International

Washington Dulles to Las Vegas Harry Reid International: Alternative routes

Compare routes from Washington Dulles to Las Vegas below. You may find an airport to fly into that's cheaper, faster, or easier than Las Vegas Harry Reid International.

Washington D.C. to Las Vegas: Flight information

The things to know before you go.
Cheapest flight found$202
Cheapest month to flyAugust
Average flight time5 hrs, 12 mins
Most popular airlineUnited
Average flights per week72

Finding cheap flights from Washington Dulles to Las Vegas Harry Reid International: Frequently asked questions

The best price we found for a return flight from Washington Dulles to Las Vegas Harry Reid International is $202. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
5 hours and 12 minutes is the average flight time from Washington Dulles to Las Vegas Harry Reid International.
United, Brussels Airlines and Volaris fly direct from Washington Dulles to Las Vegas Harry Reid International.
As of July 2025, there are 72 flights per week flying from Washington Dulles to Las Vegas Harry Reid International.
The cheapest month to fly from Washington Dulles to Las Vegas Harry Reid International is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Las Vegas Harry Reid International Airport on Thursday, 14 August 2025.
Yes – the average flight time is 5 hours and 12 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Las Vegas Harry Reid International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Las Vegas is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines offers the cheapest flight tickets to Las Vegas Harry Reid International.

Travelling from Washington Dulles International Airport (IAD) to Harry Reid Airport (formerly McCarran Airport) (LAS): what you need to know

  • Around 5 hours 5 minutes is how long you can expect to be in the air on a direct flight from Washington Dulles International Airport to Harry Reid Airport (formerly McCarran Airport).

  • Las Vegas's timezone is UTC-7, making Las Vegas three hours behind Washington DC.

  • Flights from IAD to LAS start from 08:15 — the first with United Airlines. The last departure is at 19:55 with United Airlines. In total, you can choose from 22 weekly Washington Dulles International Airport to Harry Reid Airport (formerly McCarran Airport) flights.

  • For a smooth journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This ensures you have enough time to board your IAD to LAS flight.

  • During popular months such as April, it's best to get to the airport even earlier. Plan to arrive two hours before a domestic departure and four hours ahead of an international flight when you fly during a high season in general.

  • United Airlines has direct flights from Washington Dulles International Airport to Harry Reid Airport (formerly McCarran Airport). Book with this popular airline, then get ready to check out the sights in Las Vegas — and maybe even more of United States if time allows.

  • United Airlines is the airline with the highest passenger demand for this route.

  • With 78.44% of services arriving as scheduled, United Airlines is the most punctual carrier operating IAD to LAS flights.

  • We make it easy to book a flight with a stopover. To see all your options for tickets from Washington Dulles International Airport to Harry Reid Airport (formerly McCarran Airport), uncheck 'Direct flights only.' Then, choose a flight offering a stop long enough to explore your chosen city. Popular stopovers between IAD and LAS include:

    • Denver International Airport

    • Nashville International Airport

    • Phoenix Sky Harbour International Airport

How to find the cheapest flights from Washington Dulles International Airport (IAD) to Harry Reid Airport (formerly McCarran Airport) (LAS)

  • $96 is the best price for a one-way Washington Dulles International Airport to Harry Reid Airport (formerly McCarran Airport) flight. Return flights start at $202. These fares can change based on availability.

  • To pick up cheap tickets from IAD to LAS, reserve your journey six months before your departure date.

  • May is the cheapest month for flights from Washington Dulles International Airport to Harry Reid Airport (formerly McCarran Airport). If you want to fly during a different time of year, the 'Whole month' tool will give you the lowest airfares for each month.

  • Cut down on the time spent looking for cheap flights from IAD to LAS by creating a Price Alert. We'll send you an email or push notification on the app when a new discounted fare appears.

  • Tailor your trip with filters. Select your ideal arrival and departure times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Best' or 'Fastest' flights from Washington Dulles International Airport to Harry Reid Airport (formerly McCarran Airport).

Handy information about Washington Dulles International Airport (IAD)

  • You'll find IAD at 1 Saarinen Circle.

  • Of all flights leaving Washington Dulles International Airport, 74.39% arrive as scheduled at their destination.

  • Washington Dulles International Airport is about 56 kilometres from central Washington DC. If you're ride-sharing, catching a cab or driving from the centre, it'll take you 50 minutes or so to arrive, depending on the traffic.

  • The journey when using public transport usually takes 3 hours 25 minutes.

  • Get your break off to a leisurely start by staying near IAD. Whether you've booked an early flight from Washington Dulles International Airport to Harry Reid Airport (formerly McCarran Airport) or want to avoid feeling rushed, these stays are the answer:

Arriving at Harry Reid Airport (formerly McCarran Airport) (LAS)

Getting from Harry Reid Airport (formerly McCarran Airport) (LAS) to central Las Vegas

  • LAS is located at 5757 Wayne Newton Boulevard.

  • From Harry Reid Airport (formerly McCarran Airport), Las Vegas is approximately 19 kilometres away. It takes around 15 minutes to get to the centre driving.

  • If you're travelling on public transport, expect a journey time of about 1 hour.

When to fly to Harry Reid Airport (formerly McCarran Airport) (LAS)

  • October is the busiest month for flights from Washington Dulles International Airport to Harry Reid Airport (formerly McCarran Airport). To steer clear of the crowds, visit Las Vegas in May.

  • Lock in your flight from Washington Dulles International Airport to Harry Reid Airport (formerly McCarran Airport) for July if you'd like to visit Las Vegas during its warmest month. You can expect temperatures of between 23ºC (73ºF) and 42ºC (108ºF).

  • Search for cheap tickets from IAD to LAS in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between -1ºC (30ºF) and 13ºC (55ºF) on average.

Explore more of United States

  • You've done Las Vegas, now it's time to discover other parts of United States. Journey about 370 kilometres south-west to Los Angeles to tick off its leading sights. From Griffith Observatory to The Broad and La Brea Tar Pits & Museum, you'll have a full itinerary ahead.

  • Phoenix is another sought-after destination in United States and is around 418 kilometres south-east of Las Vegas. No trip is complete without a visit to Desert Botanical Garden, Heard Museum and Papago Park.

Plan the rest of your trip from Washington D.C. to Las Vegas

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.