S$165 Cheap Flights from Las Vegas to Washington

View S$165 flight on Wed, 27 Aug, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at S$165 for one-way flights and S$365 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, 24 Aug - Sun, 31 Aug
LAS
Las Vegas
IAD
Washington
S$365 Return, found 13 hours ago
S$365
Return
found 13 hours ago
Select United flight, departing Sun, 24 Aug from Las Vegas to Washington, returning Sun, 31 Aug, priced at S$365 found 13 hours ago
United
Sun, 24 Aug - Sun, 31 Aug
LAS
Las Vegas
IAD
Washington
S$373 Return, found 13 hours ago
S$373
Return
found 13 hours ago
Select United flight, departing Sun, 24 Aug from Las Vegas to Washington, returning Sun, 31 Aug, priced at S$373 found 13 hours ago
United
Sun, 24 Aug - Sun, 31 Aug
LAS
Las Vegas
IAD
Washington
S$416 Return, found 13 hours ago
S$416
Return
found 13 hours ago
Select United flight, departing Sun, 24 Aug from Las Vegas to Washington, returning Sun, 31 Aug, priced at S$416 found 13 hours ago
United
Sun, 24 Aug - Sun, 31 Aug
LAS
Las Vegas
IAD
Washington
S$439 Return, found 13 hours ago
S$439
Return
found 13 hours ago
Select United flight, departing Sun, 24 Aug from Las Vegas to Washington, returning Sun, 31 Aug, priced at S$439 found 13 hours ago
American Airlines
Sun, 24 Aug - Sun, 31 Aug
LAS
Las Vegas
IAD
Washington
S$450 Return, found 13 hours ago
S$450
Return
found 13 hours ago
Select American Airlines flight, departing Sun, 24 Aug from Las Vegas to Washington, returning Sun, 31 Aug, priced at S$450 found 13 hours ago
American Airlines
Sun, 24 Aug - Sun, 31 Aug
LAS
Las Vegas
IAD
Washington
S$457 Return, found 13 hours ago
S$457
Return
found 13 hours ago
Select American Airlines flight, departing Sun, 24 Aug from Las Vegas to Washington, returning Sun, 31 Aug, priced at S$457 found 13 hours ago
United
Sun, 24 Aug - Sun, 31 Aug
LAS
Las Vegas
IAD
Washington
S$482 Return, found 13 hours ago
S$482
Return
found 13 hours ago
Select United flight, departing Sun, 24 Aug from Las Vegas to Washington, returning Sun, 31 Aug, priced at S$482 found 13 hours ago
American Airlines
Sun, 24 Aug - Sun, 31 Aug
LAS
Las Vegas
IAD
Washington
S$489 Return, found 13 hours ago
S$489
Return
found 13 hours ago
Select American Airlines flight, departing Sun, 24 Aug from Las Vegas to Washington, returning Sun, 31 Aug, priced at S$489 found 13 hours ago
United
Sun, 24 Aug - Sun, 31 Aug
LAS
Las Vegas
IAD
Washington
S$490 Return, found 13 hours ago
S$490
Return
found 13 hours ago
Select United flight, departing Sun, 24 Aug from Las Vegas to Washington, returning Sun, 31 Aug, priced at S$490 found 13 hours ago
Delta
Sun, 24 Aug - Sun, 31 Aug
LAS
Las Vegas
IAD
Washington
S$503 Return, found 13 hours ago
S$503
Return
found 13 hours ago
Select Delta flight, departing Sun, 24 Aug from Las Vegas to Washington, returning Sun, 31 Aug, priced at S$503 found 13 hours ago

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

May is typically the cheapest month to fly

From S$141 - S$445 per traveller.

Graph displaying average flight prices per month

Las Vegas to Washington route information
Origin airport
Harry Reid Intl.
Destination airport
Washington Dulles Intl.
Return price
S$365
Distance
3297 km
Average flight time
8 hours 56 mins

Flights from Las Vegas to Chantilly

There are several airlines that operate frequent flights from Las Vegas (LAS) to Washington D.C. (IAD) including

The earliest flight leaves McCarran Intl. Airport at 00:02 and arrives at Washington Dulles Intl. Airport at 05:10. The last flight of the day departs Las Vegas at 23:59 and arrives at Washington D.C. at 21:25.

The flight distance from Las Vegas to Washington D.C. is about 3334 km, the shortest flight is 04 hours 22 minutes with .

Expedia lets you search across the largest number of airlines and Chantilly flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Las Vegas Chantilly flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Las Vegas to Chantilly trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Chantilly flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Las Vegas to Chantilly with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

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 S$365. 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.

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