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฿5,125 Cheap Flights from Las Vegas (LAS) to Washington (IAD)

View ฿5,125 flight on Mon, 26 Oct 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at ฿5,125 for one-way flights and ฿14,950 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 9 Oct - Sat, 17 Oct
LAS
Las Vegas
IAD
Washington
฿14,950 Return, found 7 hours ago
฿14,950
Return
found 7 hours ago
Select Delta flight, departing Fri, 9 Oct from Las Vegas to Washington, returning Sat, 17 Oct, priced at ฿14,950 found 7 hours ago
Delta
Fri, 9 Oct - Sat, 17 Oct
LAS
Las Vegas
IAD
Washington
฿16,175 Return, found 7 hours ago
฿16,175
Return
found 7 hours ago
Select Delta flight, departing Fri, 9 Oct from Las Vegas to Washington, returning Sat, 17 Oct, priced at ฿16,175 found 7 hours ago
United
Fri, 9 Oct - Sat, 17 Oct
LAS
Las Vegas
IAD
Washington
฿16,435 Return, found 7 hours ago
฿16,435
Return
found 7 hours ago
Select United flight, departing Fri, 9 Oct from Las Vegas to Washington, returning Sat, 17 Oct, priced at ฿16,435 found 7 hours ago
Delta
Fri, 9 Oct - Sat, 17 Oct
LAS
Las Vegas
IAD
Washington
฿16,615 Return, found 7 hours ago
฿16,615
Return
found 7 hours ago
Select Delta flight, departing Fri, 9 Oct from Las Vegas to Washington, returning Sat, 17 Oct, priced at ฿16,615 found 7 hours ago
United
Fri, 9 Oct - Sat, 17 Oct
LAS
Las Vegas
IAD
Washington
฿16,765 Return, found 7 hours ago
฿16,765
Return
found 7 hours ago
Select United flight, departing Fri, 9 Oct from Las Vegas to Washington, returning Sat, 17 Oct, priced at ฿16,765 found 7 hours ago
United
Fri, 9 Oct - Sat, 17 Oct
LAS
Las Vegas
IAD
Washington
฿17,660 Return, found 7 hours ago
฿17,660
Return
found 7 hours ago
Select United flight, departing Fri, 9 Oct from Las Vegas to Washington, returning Sat, 17 Oct, priced at ฿17,660 found 7 hours ago
United
Fri, 9 Oct - Sat, 17 Oct
LAS
Las Vegas
IAD
Washington
฿17,920 Return, found 7 hours ago
฿17,920
Return
found 7 hours ago
Select United flight, departing Fri, 9 Oct from Las Vegas to Washington, returning Sat, 17 Oct, priced at ฿17,920 found 7 hours ago
United
Fri, 9 Oct - Sat, 17 Oct
LAS
Las Vegas
IAD
Washington
฿17,990 Return, found 7 hours ago
฿17,990
Return
found 7 hours ago
Select United flight, departing Fri, 9 Oct from Las Vegas to Washington, returning Sat, 17 Oct, priced at ฿17,990 found 7 hours ago
United
Fri, 9 Oct - Sat, 17 Oct
LAS
Las Vegas
IAD
Washington
฿18,100 Return, found 7 hours ago
฿18,100
Return
found 7 hours ago
Select United flight, departing Fri, 9 Oct from Las Vegas to Washington, returning Sat, 17 Oct, priced at ฿18,100 found 7 hours ago
American Airlines
Fri, 9 Oct - Sat, 17 Oct
LAS
Las Vegas
IAD
Washington
฿18,580 Return, found 7 hours ago
฿18,580
Return
found 7 hours ago
Select American Airlines flight, departing Fri, 9 Oct from Las Vegas to Washington, returning Sat, 17 Oct, priced at ฿18,580 found 7 hours ago

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

February is typically the cheapest month to fly

From ฿3,250 - ฿11,610 per traveller.

Frequently asked questions

How much is a flight from LAS to IAD?
Start packing your bags, because round-trip journeys from LAS to Washington Dulles Intl. Airport (IAD) start from ฿14,950. That's based on fares advertised within the last 7 days on Expedia for flights departing within the next year. Prices can go up quickly, so book now to score the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Harry Reid Airport (formerly McCarran Airport) to Dulles Intl. Airport?
Most flights can be conveniently cancelled online, but whether or not you are charged a fee varies between airlines. If you do need to cancel your holiday, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Harry Reid Airport (formerly McCarran Airport) to IAD 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 LAS to Washington Dulles Intl. Airport (IAD) flights, you'll see a "no change fees" filter for you to select.
How many hours is the flight from Harry Reid Airport (formerly McCarran Airport) to Dulles Intl. Airport?
The average flight time between LAS (LAS) and IAD (IAD) is 8 hours and 1 minute. If you're travelling with kids, it's always a good idea to pack some fruit or snacks in your carry-on bag.
How far is the flight from Harry Reid Airport (formerly McCarran Airport) to Dulles Intl. Airport?
Around 3,300 kilometres separates Las Vegas and Chantilly, so pack some entertainment to help you fill in a few hours. That action-packed novel you haven't finished will do the trick.
Which airlines fly direct from Harry Reid Airport (formerly McCarran Airport) to IAD?
United Airlines (UA) will take you from Harry Reid Airport (formerly McCarran Airport) to Dulles Intl. Airport safely and comfortably. Choose from 60 direct flights each month on this route.
Are LAS to Dulles Intl. Airport flight tickets cheaper when they're purchased at the last minute?
Flight prices are always on the move, so there are no guarantees. While last-minute flight deals between Harry Reid Airport (formerly McCarran Airport) and Dulles Intl. Airport are of course possible, it's also a good idea to keep a close eye on prices well before you fly. In fact, some airlines publish their prices up to 12 months prior to the departure date. Expedia is continuously updating the biggest bargains around, so keep checking back and be ready to grab your seat when fare prices drop.

Travel information

Origin airport
Harry Reid Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, United
Return price
฿14,950
Distance
3297 km
Average flight time
8 hours 35 mins

Book with confidence

Perfect flights from Las Vegas to Washington

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Las Vegas to Washington. 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 , 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 Harry Reid Intl. to Washington Dulles Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿5,125 and roundtrip prices from ฿14,950. 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 Washington Dulles Intl. and explore 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 to travel arrangements today and embark on the journey of a lifetime in Washington.
Perfect flights from Las Vegas to Washington
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