Find flights
Deals
When to book
FAQs

Cheap flights from Washington, D.C. Dulles Intl Airport to Las Vegas from $257

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LAS
17 Jun — 24 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dulles Intl to Las Vegas

Enter your travel dates to find the best prices.

Cheapest flights from Dulles Intl to Las Vegas
Explore the most affordable flight options available from Dulles Intl to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 May 2026.

Tue 15/909:00
IAD
-
LAS
1 stop11h 23m
Alaska Airlines
Wed 23/907:00
LAS
-
IAD
1 stop8h 14m
Alaska Airlines
Deal found 13/5$499
Sun 1/1112:50
IAD
-
LAS
1 stop22h 14m
Sun Country Air
Thu 5/1123:59
LAS
-
IAD
1 stop8h 07m
Sun Country Air
Deal found 14/5$510
Wed 15/720:10
IAD
-
LAS
Nonstop5h 09m
United Airlines
Wed 22/708:48
LAS
-
IAD
Nonstop4h 36m
United Airlines
Deal found 14/5$527
Tue 15/909:00
IAD
-
LAS
1 stop11h 23m
Alaska Airlines
Mon 21/907:00
LAS
-
IAD
1 stop8h 14m
Alaska Airlines
Deal found 13/5$529
Wed 7/1008:31
IAD
-
LAS
1 stop7h 43m
United Airlines
Wed 14/1023:55
LAS
-
IAD
Nonstop4h 32m
United Airlines
Deal found 13/5$536
Wed 16/913:07
IAD
-
LAS
Nonstop5h 03m
United Airlines
Tue 22/914:30
LAS
-
IAD
1 stop7h 14m
United Airlines
Deal found 14/5$541
Wed 9/918:00
IAD
-
LAS
Nonstop5h 08m
United Airlines
Mon 14/908:20
LAS
-
IAD
Nonstop4h 38m
United Airlines
Deal found 17/5$550
Wed 9/913:07
IAD
-
LAS
Nonstop5h 03m
United Airlines
Thu 17/923:54
LAS
-
IAD
Nonstop4h 32m
United Airlines
Deal found 14/5$557
Mon 17/806:03
IAD
-
LAS
1 stop11h 13m
Alaska Airlines
Thu 27/807:00
LAS
-
IAD
1 stop8h 14m
Alaska Airlines
Deal found 17/5$558
Wed 9/909:00
IAD
-
LAS
Nonstop5h 04m
United Airlines
Sat 12/910:44
LAS
-
IAD
1 stop7h 04m
United Airlines
Deal found 17/5$564

Find flight deals from Dulles Intl to Las Vegas

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Las Vegas (LAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 May 2026.

Round-trip from

$499

One-way from

$257

Popular in

October

Cheapest in

August

Average price

$631
Alaska Airlines
  • Alaska Airlines
  • 15/9-23/9
  • 2 total stops
  • 19h 37m total
  • Washington, D.C. to Las Vegas
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 23/6
  • 1 total stop
  • 17h 42m total
  • Washington, D.C. to Las Vegas
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($109 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dulles Intl to Las Vegas that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 18 May 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Las Vegas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 23/9

08:20-13:07

1 stop7h 47m

Las Vegas Harry Reid Intl

Mon 28/9

23:55-07:27

Nonstop4h 32m

$564

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 1/7

20:10-22:19

Nonstop5h 09m

Las Vegas Harry Reid Intl

Mon 6/7

08:48-16:24

Nonstop4h 36m

$646

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 5/10

18:00-20:07

Nonstop5h 07m

Las Vegas Harry Reid Intl

Fri 9/10

23:55-07:27

Nonstop4h 32m

$675

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 7/6

20:10-22:19

Nonstop5h 09m

Las Vegas Harry Reid Intl

Wed 17/6

23:59-09:24

1 stop6h 25m

$691

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 3/8

06:03-17:12

2 stops14h 09m

Las Vegas Harry Reid Intl

Mon 10/8

19:21-18:45

1 stop20h 24m

$709

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 8/7

19:49-10:31

1 stop17h 42m

Las Vegas Harry Reid Intl

Mon 20/7

22:05-18:45

2 stops17h 40m

$720

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Thu 12/11

20:00-22:17

Nonstop5h 17m

Las Vegas Harry Reid Intl

Mon 16/11

23:00-06:22

Nonstop4h 22m

$740
Fastest return journey

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Thu 29/10

08:45-10:45

Nonstop5h 00m

Las Vegas Harry Reid Intl

Sat 7/11

23:00-06:22

Nonstop4h 22m

$740

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Thu 20/8

07:00-15:25

2 stops11h 25m

Las Vegas Harry Reid Intl

Sun 23/8

19:09-18:14

1 stop20h 05m

$803

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Thu 28/5

20:10-22:19

Nonstop5h 09m

Las Vegas Harry Reid Intl

Tue 2/6

08:48-16:24

Nonstop4h 36m

$831

Flights are sorted by cheapest return flights first.

Deals found on 17/5

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Dulles Intl to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Dulles Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Las Vegas

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Las Vegas?

Booking 17 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to Las Vegas. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Las Vegas?

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Las Vegas (average of $352). Flying from Washington, D.C. Dulles Intl Airport to Las Vegas in October is currently the most expensive (average of $944). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to LAS?

Find hourly flight availability from Dulles Intl to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 May 2026.

When flying from Washington, D.C. Dulles Intl Airport to Las Vegas, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Washington, D.C. Dulles Intl Airport to Las Vegas?

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Las Vegas from Washington, D.C. Dulles Intl?

    For a flight from Washington, D.C. Dulles Intl to Las Vegas, you will be flying into Harry Reid Intl. Las Vegas Harry Reid Intl (LAS) is just 10.0 km from the centre vof the city. Harry Reid Intl is the only Las Vegas airport and it handles 3 inbound flights from Washington, D.C. Dulles Intl per day. 0 airlines have flights to Las Vegas Harry Reid Intl from Washington, D.C. Dulles Intl on a regular basis.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Las Vegas?

    Airlines like United Airlines fly from Washington, D.C. Dulles Intl Airport to Las Vegas in about 5h 08m. The time it takes to get you to your destination is usually consistent. There are 3314 km between Washington, D.C. Dulles Intl Airport and Las Vegas. Most flights are nonstop.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Las Vegas?

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. Dulles Intl Airport to Las Vegas consider choosing United Airlines(93%), ITA Airways(92%) or Austrian Airlines(90%), as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from Dulles Intl to Las Vegas that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Las Vegas flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Las Vegas?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Las Vegas.

  • Can I find deals for business class flights from Dulles Intl to Las Vegas?

    Yes. Cheapflights offers flight deals from Dulles Intl to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Las Vegas?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Las Vegas (average of $352). Flying from Washington, D.C. Dulles Intl Airport to Las Vegas in October is currently the most expensive (average of $944). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Paradise
Winchester

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Dulles Intl to Las Vegas?

Cheapflights helps you search for flights from Dulles Intl to Las Vegas via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Las Vegas?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Dulles Intl to Las Vegas for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Dulles Intl to Las Vegas with no change fees?

Yes, we can. To see specific flights from Dulles Intl to Las Vegas with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Dulles Intl to Las Vegas become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.