฿4,180 Cheap Flights from Washington (IAD) to Las Vegas (LAS)

View ฿4,180 flight on Sat, 6 Sep 2025Opens in a new window

Popular airlines from Washington Dulles International Airport (IAD) to Harry Reid Intl. Airport (LAS)

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

Prices were available within the past 7 days and start at ฿4,180 for one-way flights and ฿8,355 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 6 Sep - Tue, 9 Sep
IAD
Washington
LAS
Las Vegas
฿8,355 Return, found 22 hours ago
฿8,355
Return
found 22 hours ago
Select Delta flight, departing Sat, 6 Sep from Washington to Las Vegas, returning Tue, 9 Sep, priced at ฿8,355 found 22 hours ago
Delta
Sat, 6 Sep - Tue, 9 Sep
IAD
Washington
LAS
Las Vegas
฿8,755 Return, found 22 hours ago
฿8,755
Return
found 22 hours ago
Select Delta flight, departing Sat, 6 Sep from Washington to Las Vegas, returning Tue, 9 Sep, priced at ฿8,755 found 22 hours ago
United
Sat, 6 Sep - Tue, 9 Sep
IAD
Washington
LAS
Las Vegas
฿9,145 Return, found 22 hours ago
฿9,145
Return
found 22 hours ago
Select United flight, departing Sat, 6 Sep from Washington to Las Vegas, returning Tue, 9 Sep, priced at ฿9,145 found 22 hours ago
Delta
Sat, 6 Sep - Tue, 9 Sep
IAD
Washington
LAS
Las Vegas
฿9,650 Return, found 22 hours ago
฿9,650
Return
found 22 hours ago
Select Delta flight, departing Sat, 6 Sep from Washington to Las Vegas, returning Tue, 9 Sep, priced at ฿9,650 found 22 hours ago
United
Sat, 6 Sep - Tue, 9 Sep
IAD
Washington
LAS
Las Vegas
฿10,050 Return, found 22 hours ago
฿10,050
Return
found 22 hours ago
Select United flight, departing Sat, 6 Sep from Washington to Las Vegas, returning Tue, 9 Sep, priced at ฿10,050 found 22 hours ago
Delta
Sat, 6 Sep - Tue, 9 Sep
IAD
Washington
LAS
Las Vegas
฿10,215 Return, found 22 hours ago
฿10,215
Return
found 22 hours ago
Select Delta flight, departing Sat, 6 Sep from Washington to Las Vegas, returning Tue, 9 Sep, priced at ฿10,215 found 22 hours ago
Delta
Sat, 6 Sep - Tue, 9 Sep
IAD
Washington
LAS
Las Vegas
฿10,380 Return, found 22 hours ago
฿10,380
Return
found 22 hours ago
Select Delta flight, departing Sat, 6 Sep from Washington to Las Vegas, returning Tue, 9 Sep, priced at ฿10,380 found 22 hours ago
Delta
Sat, 6 Sep - Tue, 9 Sep
IAD
Washington
LAS
Las Vegas
฿10,950 Return, found 22 hours ago
฿10,950
Return
found 22 hours ago
Select Delta flight, departing Sat, 6 Sep from Washington to Las Vegas, returning Tue, 9 Sep, priced at ฿10,950 found 22 hours ago
Delta
Sat, 6 Sep - Tue, 9 Sep
IAD
Washington
LAS
Las Vegas
฿10,955 Return, found 22 hours ago
฿10,955
Return
found 22 hours ago
Select Delta flight, departing Sat, 6 Sep from Washington to Las Vegas, returning Tue, 9 Sep, priced at ฿10,955 found 22 hours ago
American Airlines
Sat, 6 Sep - Tue, 9 Sep
IAD
Washington
LAS
Las Vegas
฿14,530 Return, found 22 hours ago
฿14,530
Return
found 22 hours ago
Select American Airlines flight, departing Sat, 6 Sep from Washington to Las Vegas, returning Tue, 9 Sep, priced at ฿14,530 found 22 hours ago

Find the cheapest month to fly from Washington (IAD) to Las Vegas (LAS)

May is typically the cheapest month to fly

From ฿3,954 - ฿15,611 per traveller.

Graph displaying average flight prices per month

Flight from Washington to Las Vegas route information
Origin airport
Washington Dulles Intl.
Destination airport
Harry Reid Intl.
Airlines serving
American Airlines, Delta, United
Return price
฿8,355
Distance
3297 km
Average flight time
2 hours 56 mins

Perfect flights from Washington to Las Vegas

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Washington to Las Vegas. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of Las Vegas, surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Washington Dulles Intl. to Harry Reid Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿4,180 and roundtrip prices from ฿8,355. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Harry Reid Intl. and explore Las Vegas and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your IAD to LAS travel arrangements today and embark on the journey of a lifetime in Las Vegas.

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 ฿8,355. 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.

Explore a world of travel with Expedia

Washington Airports

Washington

Ronald Reagan Washington National to Las Vegas
฿8,355.00
*Available to Expedia members.