Find flights
Deals
When to book
FAQs

Cheap flights from Washington, D.C. Dulles Intl Airport to Las Vegas from $236

IAD — LAS
22 Sep — 29 Sep1
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

Tue 6/1006:00 -
Nonstop4h 58m
Tue 13/1022:43 -
Nonstop4h 37m
Deal found 22/8$333
Tue 8/1217:38 -
1 stop9h 21m
Thu 10/1219:29 -
1 stop20h 32m
Deal found 20/8$470
Sat 19/919:47 -
1 stop16h 55m
Tue 22/917:28 -
1 stop21h 46m
Deal found 20/8$498
Fri 4/1217:25 -
1 stop8h 57m
Wed 9/1212:00 -
1 stop8h 59m
Deal found 20/8$500
Wed 28/1008:34 -
1 stop7h 51m
Thu 29/1023:45 -
Nonstop4h 22m
Deal found 19/8$506
Sat 5/919:35 -
1 stop17h 07m
Wed 9/907:00 -
1 stop8h 14m
Deal found 21/8$509
Sat 19/907:00 -
1 stop11h 32m
Wed 30/911:55 -
1 stop9h 04m
Deal found 19/8$512
Fri 11/918:00 -
Nonstop5h 08m
Mon 14/923:57 -
Nonstop4h 33m
Deal found 20/8$517
Sat 17/1007:02 -
1 stop10h 58m
Tue 20/1020:23 -
2 stops24h 36m
Deal found 19/8$523
Sat 19/917:15 -
1 stop6h 50m
Sat 26/922:01 -
1 stop8h 08m
Deal found 19/8$526

Find flight deals from Dulles Intl to Las Vegas

Round-trip from

$333

One-way from

$236

Popular in

October

Cheapest in

August

Average price

$460
Frontier
  • Frontier
  • 6/10-13/10
  • Nonstop
  • 9h 35m total
  • Washington, D.C. to Las Vegas
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 12/9
  • 1 total stop
  • 11h 32m total
  • Washington, D.C. to Las Vegas
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($88 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
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 Washington, D.C. Dulles Intl - LAS Las Vegas Harry Reid Intl

IADLAS

Washington, D.C. Dulles Intl

Thu 3/12

17:25-23:22

1 stop8h 57m

Las Vegas Harry Reid Intl

Wed 9/12

19:29-19:01

1 stop20h 32m

$498
Fastest return journey

Washington, D.C.Las Vegas

IAD Washington, D.C. Dulles Intl - LAS Las Vegas Harry Reid Intl

IADLAS

Washington, D.C. Dulles Intl

Sun 6/9

12:55-14:59

Nonstop5h 04m

Las Vegas Harry Reid Intl

Wed 9/9

08:20-15:58

Nonstop4h 38m

$517

Washington, D.C.Las Vegas

IAD Washington, D.C. Dulles Intl - LAS Las Vegas Harry Reid Intl

IADLAS

Washington, D.C. Dulles Intl

Thu 29/10

18:12-23:35

1 stop8h 23m

Las Vegas Harry Reid Intl

Mon 2/11

13:35-23:35

1 stop7h 00m

$526

Washington, D.C.Las Vegas

IAD Washington, D.C. Dulles Intl - LAS Las Vegas Harry Reid Intl

IADLAS

Washington, D.C. Dulles Intl

Fri 4/12

17:25-23:22

1 stop8h 57m

Las Vegas Harry Reid Intl

Mon 7/12

19:29-19:01

1 stop20h 32m

$528

Washington, D.C.Las Vegas

IAD Washington, D.C. Dulles Intl - LAS Las Vegas Harry Reid Intl

IADLAS

Washington, D.C. Dulles Intl

Wed 3/2

18:53-23:44

1 stop7h 51m

Las Vegas Harry Reid Intl

Sun 7/2

06:00-17:50

1 stop8h 50m

$566

Washington, D.C.Las Vegas

IAD Washington, D.C. Dulles Intl - LAS Las Vegas Harry Reid Intl

IADLAS

Washington, D.C. Dulles Intl

Thu 5/11

06:10-10:41

1 stop7h 31m

Las Vegas Harry Reid Intl

Sat 7/11

07:45-15:13

Nonstop4h 28m

$595

Washington, D.C.Las Vegas

IAD Washington, D.C. Dulles Intl - LAS Las Vegas Harry Reid Intl

IADLAS

Washington, D.C. Dulles Intl

Mon 14/9

19:47-09:42

1 stop16h 55m

Las Vegas Harry Reid Intl

Sat 19/9

08:45-05:40

2 stops17h 55m

$620

Washington, D.C.Las Vegas

IAD Washington, D.C. Dulles Intl - LAS Las Vegas Harry Reid Intl

IADLAS

Washington, D.C. Dulles Intl

Fri 2/10

17:57-12:33

2 stops21h 36m

Las Vegas Harry Reid Intl

Wed 7/10

12:08-23:59

1 stop8h 51m

$620

Washington, D.C.Las Vegas

IAD Washington, D.C. Dulles Intl - LAS Las Vegas Harry Reid Intl

IADLAS

Washington, D.C. Dulles Intl

Tue 6/10

09:38-23:33

2 stops16h 55m

Las Vegas Harry Reid Intl

Tue 13/10

20:23-23:59

2 stops24h 36m

$632

Washington, D.C.Las Vegas

IAD Washington, D.C. Dulles Intl - LAS Las Vegas Harry Reid Intl

IADLAS

Washington, D.C. Dulles Intl

Fri 5/2

18:53-23:44

1 stop7h 51m

Las Vegas Harry Reid Intl

Thu 11/2

17:45-05:31

1 stop8h 46m

$655

Flights are sorted by cheapest return flights first.

Deals found on 22/8

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

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 52 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 $460). Flying from Washington, D.C. Dulles Intl Airport to Las Vegas in October is currently the most expensive (average of $1,008). 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?

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?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Las Vegas flights typically cost between $392 and $769 in October.
The cheapest return price found within the last 5 days was $333 on Frontier (6 Oct–13 Oct).

Related info for your journey

  • 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 5 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 Alaska Airlines, United Airlines, and Delta fly from Washington, D.C. Dulles Intl Airport to Las Vegas in about 5h 04m. The time it takes to get you to your destination can typically vary by up to 3h 53m. There are 3314 km between Washington, D.C. Dulles Intl Airport and Las Vegas. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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 Ethiopian Air(86%), United Airlines(81%) or Austrian Airlines(69%), 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 $460). Flying from Washington, D.C. Dulles Intl Airport to Las Vegas in October is currently the most expensive (average of $1,008). 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

Fly with Cheapflights

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.