S$166 Cheap Flights from Washington to Las Vegas

View S$166 flight on Sat, 24 Jan, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at S$166 for one-way flights and S$369 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, 12 Sep - Mon, 15 Sep
IAD
Washington
LAS
Las Vegas
S$369 Return, found 4 days ago
S$369
Return
found 4 days ago
Select United flight, departing Fri, 12 Sep from Washington to Las Vegas, returning Mon, 15 Sep, priced at S$369 found 4 days ago
United
Fri, 12 Sep - Mon, 15 Sep
IAD
Washington
LAS
Las Vegas
S$382 Return, found 4 days ago
S$382
Return
found 4 days ago
Select United flight, departing Fri, 12 Sep from Washington to Las Vegas, returning Mon, 15 Sep, priced at S$382 found 4 days ago
Delta
Fri, 19 Sep - Fri, 26 Sep
IAD
Washington
LAS
Las Vegas
S$384 Return, found 5 days ago
S$384
Return
found 5 days ago
Select Delta flight, departing Fri, 19 Sep from Washington to Las Vegas, returning Fri, 26 Sep, priced at S$384 found 5 days ago
United
Fri, 12 Sep - Mon, 15 Sep
IAD
Washington
LAS
Las Vegas
S$397 Return, found 4 days ago
S$397
Return
found 4 days ago
Select United flight, departing Fri, 12 Sep from Washington to Las Vegas, returning Mon, 15 Sep, priced at S$397 found 4 days ago
Delta
Fri, 19 Sep - Fri, 26 Sep
IAD
Washington
LAS
Las Vegas
S$401 Return, found 5 days ago
S$401
Return
found 5 days ago
Select Delta flight, departing Fri, 19 Sep from Washington to Las Vegas, returning Fri, 26 Sep, priced at S$401 found 5 days ago
United
Fri, 12 Sep - Mon, 15 Sep
IAD
Washington
LAS
Las Vegas
S$408 Return, found 4 days ago
S$408
Return
found 4 days ago
Select United flight, departing Fri, 12 Sep from Washington to Las Vegas, returning Mon, 15 Sep, priced at S$408 found 4 days ago
United
Fri, 12 Sep - Mon, 15 Sep
IAD
Washington
LAS
Las Vegas
S$409 Return, found 4 days ago
S$409
Return
found 4 days ago
Select United flight, departing Fri, 12 Sep from Washington to Las Vegas, returning Mon, 15 Sep, priced at S$409 found 4 days ago
Delta
Fri, 19 Sep - Fri, 26 Sep
IAD
Washington
LAS
Las Vegas
S$430 Return, found 5 days ago
S$430
Return
found 5 days ago
Select Delta flight, departing Fri, 19 Sep from Washington to Las Vegas, returning Fri, 26 Sep, priced at S$430 found 5 days ago
Delta
Fri, 19 Sep - Fri, 26 Sep
IAD
Washington
LAS
Las Vegas
S$437 Return, found 5 days ago
S$437
Return
found 5 days ago
Select Delta flight, departing Fri, 19 Sep from Washington to Las Vegas, returning Fri, 26 Sep, priced at S$437 found 5 days ago
American Airlines
Fri, 19 Sep - Fri, 26 Sep
IAD
Washington
LAS
Las Vegas
S$484 Return, found 5 days ago
S$484
Return
found 5 days ago
Select American Airlines flight, departing Fri, 19 Sep from Washington to Las Vegas, returning Fri, 26 Sep, priced at S$484 found 5 days ago

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

May is typically the cheapest month to fly

From S$157 - S$620 per traveller.

Graph displaying average flight prices per month

Washington to Las Vegas route information
Origin airport
Washington Dulles Intl.
Destination airport
Harry Reid Intl.
Return price
S$369
Distance
3297 km
Average flight time
2 hours 56 mins

Perfect flights from Washington to Las Vegas

Your Journey from Washington to Las Vegas

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Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Delta, United, American Airlines. Our selection of flights from Washington Dulles Intl. to Harry Reid Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Washington to Las Vegas Flights

Experience the joy of finding cheap flights from Washington Dulles Intl. to Harry Reid Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$166 and roundtrip prices from S$369*.
 

Pre-Flight Essentials

Ensure a smooth journey from Washington to Las Vegas with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Las Vegas

Picture yourself stepping off the plane in Las Vegas and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Washington to Las Vegas Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Washington to Las Vegas.
 

Beyond the Flight – Exploring Las Vegas

With Expedia, your adventure extends beyond the flight. Explore Las Vegas at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Washington to Las Vegas with Confidence

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*Note: Prices may vary based on availability and are subject to change.

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 S$369. 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

*Available to Expedia members.