S$275 Cheap Flights from Washington to Las Vegas

View S$275 flight on Tue, 12 May, 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$275 for one-way flights and S$591 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 12 May - Wed, 20 May
IAD
Washington
LAS
Las Vegas
S$591 Return, found 2 days ago
S$591
Return
found 2 days ago
Select Delta flight, departing Tue, 12 May from Washington to Las Vegas, returning Wed, 20 May, priced at S$591 found 2 days ago
Delta
Tue, 12 May - Wed, 20 May
IAD
Washington
LAS
Las Vegas
S$646 Return, found 2 days ago
S$646
Return
found 2 days ago
Select Delta flight, departing Tue, 12 May from Washington to Las Vegas, returning Wed, 20 May, priced at S$646 found 2 days ago
United
Tue, 12 May - Wed, 20 May
IAD
Washington
LAS
Las Vegas
S$648 Return, found 2 days ago
S$648
Return
found 2 days ago
Select United flight, departing Tue, 12 May from Washington to Las Vegas, returning Wed, 20 May, priced at S$648 found 2 days ago
United
Tue, 12 May - Wed, 20 May
IAD
Washington
LAS
Las Vegas
S$655 Return, found 2 days ago
S$655
Return
found 2 days ago
Select United flight, departing Tue, 12 May from Washington to Las Vegas, returning Wed, 20 May, priced at S$655 found 2 days ago
United
Tue, 12 May - Wed, 20 May
IAD
Washington
LAS
Las Vegas
S$661 Return, found 2 days ago
S$661
Return
found 2 days ago
Select United flight, departing Tue, 12 May from Washington to Las Vegas, returning Wed, 20 May, priced at S$661 found 2 days ago
American Airlines
Tue, 12 May - Wed, 20 May
IAD
Washington
LAS
Las Vegas
S$667 Return, found 2 days ago
S$667
Return
found 2 days ago
Select American Airlines flight, departing Tue, 12 May from Washington to Las Vegas, returning Wed, 20 May, priced at S$667 found 2 days ago
Delta
Fri, 29 May - Tue, 2 Jun
IAD
Washington
LAS
Las Vegas
S$672 Return, found 23 hours ago
S$672
Return
found 23 hours ago
Select Delta flight, departing Fri, 29 May from Washington to Las Vegas, returning Tue, 2 Jun, priced at S$672 found 23 hours ago
United
Tue, 12 May - Wed, 20 May
IAD
Washington
LAS
Las Vegas
S$676 Return, found 2 days ago
S$676
Return
found 2 days ago
Select United flight, departing Tue, 12 May from Washington to Las Vegas, returning Wed, 20 May, priced at S$676 found 2 days ago
United
Tue, 12 May - Wed, 20 May
IAD
Washington
LAS
Las Vegas
S$683 Return, found 2 days ago
S$683
Return
found 2 days ago
Select United flight, departing Tue, 12 May from Washington to Las Vegas, returning Wed, 20 May, priced at S$683 found 2 days ago
American Airlines
Fri, 29 May - Tue, 2 Jun
IAD
Washington
LAS
Las Vegas
S$684 Return, found 23 hours ago
S$684
Return
found 23 hours ago
Select American Airlines flight, departing Fri, 29 May from Washington to Las Vegas, returning Tue, 2 Jun, priced at S$684 found 23 hours ago

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

April is typically the cheapest month to fly

From S$207 - S$468 per traveller.

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$591. 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.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Harry Reid Intl.
Airlines serving
American Airlines, Delta, United
Return price
S$590
Distance
3297 km
Average flight time
3 hours 7 mins

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