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Cheap Flights from Washington D.C. to Las Vegas

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Compare Washington Dulles to Las Vegas flight deals

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

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Flight deals from Washington Dulles to Las Vegas

Looking for a cheap last-minute deal or the best return flight from Washington Dulles to Las Vegas? Find the lowest prices on one-way and return tickets right here.
Las Vegas.$216 per passenger.Departing Sat, 3 May, returning Mon, 5 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Washington Dulles on Sat, 3 May, arriving in Las Vegas Harry Reid International.Inbound direct flight with Frontier Airlines departs from Las Vegas Harry Reid International on Mon, 5 May, arriving in Washington Dulles.Price includes taxes and charges.From $216, select.
Las Vegas.$233 per passenger.Departing Mon, 2 Jun, returning Sat, 7 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Washington Dulles on Mon, 2 Jun, arriving in Las Vegas Harry Reid International.Inbound direct flight with Frontier Airlines departs from Las Vegas Harry Reid International on Sat, 7 Jun, arriving in Washington Dulles.Price includes taxes and charges.From $233, select.
Las Vegas.$262 per passenger.Departing Tue, 13 May, returning Tue, 3 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Washington Dulles on Tue, 13 May, arriving in Las Vegas Harry Reid International.Inbound direct flight with Frontier Airlines departs from Las Vegas Harry Reid International on Tue, 3 Jun, arriving in Washington Dulles.Price includes taxes and charges.From $262, select.
Las Vegas.$278 per passenger.Departing Sat, 26 Jul, returning Tue, 29 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Washington Dulles on Sat, 26 Jul, arriving in Las Vegas Harry Reid International.Inbound direct flight with Frontier Airlines departs from Las Vegas Harry Reid International on Tue, 29 Jul, arriving in Washington Dulles.Price includes taxes and charges.From $278, select.
Las Vegas.$305 per passenger.Departing Sat, 21 Jun, returning Thu, 3 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Washington Dulles on Sat, 21 Jun, arriving in Las Vegas Harry Reid International.Inbound direct flight with Frontier Airlines departs from Las Vegas Harry Reid International on Thu, 3 Jul, arriving in Washington Dulles.Price includes taxes and charges.From $305, select.
Las Vegas.$356 per passenger.Departing Sat, 26 Apr, returning Tue, 29 Apr.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Sat, 26 Apr, arriving in Las Vegas Harry Reid International.Inbound direct flight with United departs from Las Vegas Harry Reid International on Tue, 29 Apr, arriving in Washington Dulles.Price includes taxes and charges.From $356, select.
Las Vegas.$360 per passenger.Departing Wed, 30 Apr, returning Thu, 1 May.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Wed, 30 Apr, arriving in Las Vegas Harry Reid International.Inbound direct flight with United departs from Las Vegas Harry Reid International on Thu, 1 May, arriving in Washington Dulles.Price includes taxes and charges.From $360, select.
Las Vegas.$398 per passenger.Departing Sat, 2 Aug, returning Sat, 9 Aug.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Sat, 2 Aug, arriving in Las Vegas Harry Reid International.Inbound direct flight with United departs from Las Vegas Harry Reid International on Sat, 9 Aug, arriving in Washington Dulles.Price includes taxes and charges.From $398, select.

Find the cheapest month to fly from Washington Dulles to Las Vegas

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 flights are currently cheapest in May.
Apr
from $356
May
from $216
Jun
from $233
Jul
from $278
Aug
from $398
Sep
from $471
Oct
from $483
Nov
from $477
Dec
from $702
Jan
from $483
Feb
Find prices
Mar
Find prices

Direct flights from Washington Dulles to Las Vegas

Alternative Washington Dulles to Las Vegas routes

Looking for the cheapest, fastest or easiest route from Washington Dulles to Las Vegas? You could fly into the following airports instead.

Washington D.C. to Las Vegas: Flight information

The things to know before you go.
Cheapest flight found$216
Cheapest month to flyMay
Average flight time5 hrs, 10 mins
Most popular airlineUnited
Average flights per week47

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

There are 4 airports in Las Vegas: Las Vegas North Air Terminal, Las Vegas Harry Reid International, Las Vegas Henderson Sky Harbor, and Boulder City.
The best price we found for a return flight from Washington Dulles to Las Vegas is $208. 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 10 minutes is the average flight time from Washington Dulles to Las Vegas.
United, Brussels Airlines and Frontier Airlines fly direct from Washington Dulles to Las Vegas.
As of April 2025, there are 47 flights per week flying from Washington Dulles to Las Vegas.
The cheapest month to fly from Washington Dulles to Las Vegas is usually April 2025.
If you're flying from Washington Dulles Airport, the cheapest airport near Las Vegas is Las Vegas Harry Reid International – which is 4.3 km away from the centre of Las Vegas. We've found flights into this airport from $208.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Las Vegas on Saturday, 3 May 2025.
Yes – the average flight time is 5 hours and 10 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 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.
In April, the average temperature is usually around 15°C. July is typically the warmest month in Las Vegas, when it usually averages around 37°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging -0°C. The rainiest month is February.
Currently, Frontier Airlines offers the cheapest flight tickets to Las Vegas.

Travelling from Washington Dulles International Airport (IAD) to Las Vegas: what you need to know

  • The average duration of a direct flight from Washington Dulles International Airport to Las Vegas is 4 hours 33 minutes.

  • Las Vegas is 3 hours behind Washington DC, where Washington Dulles International Airport is located. Las Vegas operates on the UTC-7 timezone.

  • Washington Dulles International Airport (IAD) to Harry Reid Airport (formerly McCarran Airport) Airport (LAS) is the most traveled route, with 22 weekly flights to pick from. If you have things to do before heading off, the last flight from IAD to LAS is with United at 19:55. Go for the first departure operated by United at 08:15 if you want to get going early.

  • To ensure you catch your flight from IAD to Las Vegas, allow plenty of time for things like baggage drop and finding your gate. Arriving two hours ahead of international departures and an hour before domestic flights is the standard rule.

  • Peak months like July or holiday periods such as Christmas and New Year will mean bigger lines at check-in and security. If you're travelling then, play it safe and head to the airport even earlier. Arriving two hours before a domestic flight and up four hours ahead of an international flight is a wise move.

  • Nonstop flights from Washington Dulles International Airport (IAD) to Las Vegas are available for booking. Harry Reid Airport (formerly McCarran Airport) Airport (LAS) is where you'll step off the plane.

  • Be on the lookout for deals with United. This carrier has direct flights from Washington Dulles International Airport to Las Vegas.

  • Once you've booked cheap tickets from Washington Dulles International Airport to Las Vegas, get your travel documents ready. A passport or visa isn't required since you're travelling within United States. As long as you have another valid form of identification, like a driver's licence or an ID card, you're good to go.

  • The journey from central Washington DC to IAD takes around 3 hours and 26 minutes by public transport. If you ride-share, drive or get a cab, you'll cover the 56 kilometres in 51 minutes or so, depending on traffic.

  • Have an early flight from Washington Dulles International Airport to Las Vegas? Avoid rushing to the terminal (and get some extra shut-eye) by choosing one of these hotels near IAD:

How to find the cheapest flights from Washington Dulles International Airport (IAD) to Las Vegas

  • $124 is the best price for a one-way ticket from Washington Dulles International Airport to Las Vegas. Return flights start from $216. These fares can change based on availability.

  • Get cheap tickets from IAD to Las Vegas by booking 9 months ahead. According to our research, that's the sweet spot for picking up a bargain.

  • The cheapest month for tickets from Washington Dulles International Airport to Las Vegas is May. You can easily compare prices using the 'Whole month' tool to find the cheapest travel date.

  • Getting a cheap ticket from IAD to Las Vegas couldn't be easier with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch as soon as there's a better deal.

  • Use the filters to tailor your flights from Washington Dulles International Airport to Las Vegas. Select your preferred departure and arrival times, airlines and number of stops. Alternatively, sort your results by 'Cheapest' to find the best deals.

Airports in Las Vegas

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

  • Harry Reid Airport (formerly McCarran Airport) Airport (LAS) to the centre of Las Vegas is around 15 minutes by car. It's approximately 19 kilometres away.

  • It takes roughly 1 hour to get there by public transport.

  • Consider staying in a hotel close to LAS if you're catching a late flight from Washington Dulles International Airport to Las Vegas. Pick one of these accommodation options and avoid the hassle of a long transfer:

Best time to go to Las Vegas

  • October is the most popular month for flights from Washington Dulles International Airport to Las Vegas. To steer clear of the crowds, plan your trip to Las Vegas in May when things are quieter.

  • Book your flight from Washington Dulles International Airport to Las Vegas for July to experience the city during its warmest month. Expect temperatures to range from 23ºC to 42ºC.

  • Look for cheap flights from IAD to Las Vegas in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -1ºC and 13ºC on average.

More about Las Vegas

  • After booking your flight from Washington Dulles International Airport to Las Vegas, think about where you'd like to stay in this city. Make one of these options your base for exploring Las Vegas:

  • Las Vegas Strip and Fountains of Bellagio are just the start of the major attractions to add to your Las Vegas to-do list. Keep the momentum going by heading to Fremont Street Experience.

Complete your Las Vegas trip with a car rental

  • Finding you a cheap flight from Washington Dulles International Airport to Las Vegas isn't our only party trick. Check out our car rentals in Las Vegas and see the sights your way. We search for deals from trusted car rental companies and put them all in one place. Instantly compare offers and then book with no fees.

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