£115 Cheap Flights from Washington (IAD) to Las Vegas (LAS)

Featured airlines

    Plan, book, fly with confidence
  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 25% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Washington (IAD) to Las Vegas (LAS)

Prices were available within the past 7 days and start at £115 for one-way flights and £239 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, 1 Sep - Sat, 14 Sep
IAD
Washington
LAS
Las Vegas
£239 Return, found 3 days ago
£239
Return
found 3 days ago
Select Delta flight, departing Sun, 1 Sep from Washington to Las Vegas, returning Sat, 14 Sep, priced at £239 found 3 days ago
Alaska Airlines
Tue, 4 Jun - Wed, 12 Jun
IAD
Washington
LAS
Las Vegas
£241 Return, found 2 days ago
£241
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 4 Jun from Washington to Las Vegas, returning Wed, 12 Jun, priced at £241 found 2 days ago
Delta
Sat, 12 Oct - Tue, 15 Oct
IAD
Washington
LAS
Las Vegas
£244 Return, just found
£244
Return
just found
Select Delta flight, departing Sat, 12 Oct from Washington to Las Vegas, returning Tue, 15 Oct, priced at £244 just found
Delta
Sun, 1 Sep - Mon, 16 Sep
IAD
Washington
LAS
Las Vegas
£247 Return, found 3 days ago
£247
Return
found 3 days ago
Select Delta flight, departing Sun, 1 Sep from Washington to Las Vegas, returning Mon, 16 Sep, priced at £247 found 3 days ago
Delta
Sat, 19 Oct - Sat, 26 Oct
IAD
Washington
LAS
Las Vegas
£248 Return, just found
£248
Return
just found
Select Delta flight, departing Sat, 19 Oct from Washington to Las Vegas, returning Sat, 26 Oct, priced at £248 just found
Delta
Mon, 7 Oct - Tue, 15 Oct
IAD
Washington
LAS
Las Vegas
£256 Return, just found
£256
Return
just found
Select Delta flight, departing Mon, 7 Oct from Washington to Las Vegas, returning Tue, 15 Oct, priced at £256 just found
Delta
Mon, 2 Sep - Sat, 14 Sep
IAD
Washington
LAS
Las Vegas
£259 Return, found 3 days ago
£259
Return
found 3 days ago
Select Delta flight, departing Mon, 2 Sep from Washington to Las Vegas, returning Sat, 14 Sep, priced at £259 found 3 days ago
Delta
Sat, 12 Oct - Fri, 18 Oct
IAD
Washington
LAS
Las Vegas
£260 Return, just found
£260
Return
just found
Select Delta flight, departing Sat, 12 Oct from Washington to Las Vegas, returning Fri, 18 Oct, priced at £260 just found
Delta
Mon, 20 May - Thu, 23 May
IAD
Washington
LAS
Las Vegas
£261 Return, found 16 hours ago
£261
Return
found 16 hours ago
Select Delta flight, departing Mon, 20 May from Washington to Las Vegas, returning Thu, 23 May, priced at £261 found 16 hours ago
Delta
Mon, 14 Oct - Tue, 15 Oct
IAD
Washington
LAS
Las Vegas
£265 Return, just found
£265
Return
just found
Select Delta flight, departing Mon, 14 Oct from Washington to Las Vegas, returning Tue, 15 Oct, priced at £265 just found
Flight from Washington to Las Vegas route information
Origin airport
Washington Dulles Intl.
Destination airport
Harry Reid Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Return price
£238
Distance
3297 km
Average flight time
4 hours 6 mins

Compare flights from Washington to Las Vegas easily and book in confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Washington to Las Vegas. Operating between them 8 flights per day, 20 airlines cover the route. And Austrian, SAS, United Airlines, Ethiopian Airlines fly direct, getting you to Harry Reid Intl. in just 5hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Washington Dulles Intl. to Harry Reid Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Washington Dulles Intl. (IAD) to Harry Reid Intl. (LAS) 

The easiest way to view the best deals on flights from Washington to Las Vegas today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Washington Dulles Intl. to Harry Reid Intl. start at just £239 and range up to £265.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Washington and Las Vegas
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Washington to Las Vegas flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Washington Dulles Intl. to Harry Reid Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from Dulles Intl. Airport to Harry Reid Airport (formerly McCarran Airport)?
If you’re planning on travelling from IAD to Harry Reid Airport (formerly McCarran Airport), round-trip journeys start from £239. This figure is based on fares available within the last 7 days on Expedia for flights departing within the next year, so don’t let a good deal pass you by. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Washington Dulles Intl. Airport (IAD) to Harry Reid Airport (formerly McCarran Airport)?
The majority of flights can be cancelled online, but every airline has different terms and conditions. If you do need to cancel your flight, go to our Customer Service Portal and follow the instructions.
How do I find cheap flights from Washington Dulles Intl. Airport (IAD) to LAS that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Dulles Intl. Airport to LAS flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Washington Dulles Intl. Airport (IAD) to LAS?
Expect to be up above the clouds for a while, as the flight distance from Washington Dulles Intl. Airport (IAD) to LAS is 3,300 kilometres. Put together a playlist of your favourite podcasts before leaving home to keep yourself entertained during your trip.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to LAS?
Check out the deals on offer with United Airlines (UA) if you want to travel directly from IAD to LAS. This popular carrier offers 60 flights every month, so you’re sure to find one that fits your travel schedule.
Are IAD to LAS flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from Dulles Intl. Airport to LAS can be hit-or-miss. You may be able to find a bargain, but then again, you could miss out entirely! If you’d prefer to play it safe and start your trip planning early, Expedia compares flight deals up to a year in advance. Just bear in mind that not all airlines release their prices so far in advance. Our top tip? Check back often as updates are made frequently.
*Available to Expedia members.