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Cheap flights from Washington, D.C. Dulles Intl Airport to Las Vegas from $232

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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LAS
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Find 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 17 October 2025.

Tue 18/1107:43IAD - LAS
2 stops16h 48mAlaska Airlines
Wed 17/1214:57LAS - IAD
1 stop23h 24mAlaska Airlines
Deal found 16/10$477
Mon 24/1119:41IAD - LAS
Nonstop5h 19mUnited Airlines
Thu 25/1208:30LAS - IAD
Nonstop4h 30mUnited Airlines
Deal found 17/10$482
Wed 10/1207:34IAD - LAS
2 stops17h 53mAlaska Airlines
Tue 16/1207:25LAS - IAD
1 stop7h 05mAlaska Airlines
Deal found 15/10$487
Tue 11/1117:40IAD - LAS
1 stop7h 46mAlaska Airlines
Wed 10/1207:25LAS - IAD
1 stop7h 05mAlaska Airlines
Deal found 17/10$490
Sat 8/1112:09IAD - LAS
1 stop10h 23mDelta
Fri 5/1200:44LAS - IAD
1 stop6h 29mDelta
Deal found 17/10$491
Wed 12/1107:43IAD - LAS
2 stops16h 48mAlaska Airlines
Sat 13/1218:55LAS - IAD
1 stop19h 35mAlaska Airlines
Deal found 17/10$493
Fri 14/1107:15IAD - LAS
1 stop10h 24mDelta
Tue 18/1123:15LAS - IAD
1 stop9h 27mDelta
Deal found 15/10$496
Mon 24/1119:41IAD - LAS
Nonstop5h 19mUnited Airlines
Thu 27/1107:05LAS - IAD
1 stop8h 22mUnited Airlines
Deal found 17/10$497
Sat 8/1107:35IAD - LAS
1 stop17h 55mDelta
Sat 15/1111:05LAS - IAD
1 stop10h 49mDelta
Deal found 15/10$500
Mon 24/1117:59IAD - LAS
1 stop9h 28mDelta
Fri 19/1200:35LAS - IAD
1 stop6h 11mDelta
Deal found 17/10$502
Sat 15/1106:00IAD - LAS
2 stops11h 39mDelta
Tue 18/1123:15LAS - IAD
1 stop9h 27mDelta
Deal found 15/10$503
Sat 15/1106:03IAD - LAS
2 stops11h 36mDelta
Mon 17/1111:05LAS - IAD
1 stop10h 49mDelta
Deal found 16/10$508

Cheap 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 17 October 2025.

Round-trip from

$477

One-way from

$232

Popular in

December

Cheapest in

August

Average price

$750
Alaska Airlines
  • Alaska Airlines
  • 18/11-17/12
  • 3 total stops
  • 40h 12m total
  • Washington, D.C. to Las Vegas
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 9/12
  • 2 total stops
  • 12h 45m total
  • Washington, D.C. to Las Vegas
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($176 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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 17 October 2025.
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

Dulles Intl

Fly to

Las Vegas

Route

Depart

Return

Price

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 14/2

12:30-17:37

1 stop8h 07m

Las Vegas Harry Reid Intl

Tue 17/2

11:30-23:02

1 stop8h 32m

$491

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 8/11

09:00-13:37

1 stop7h 37m

Las Vegas Harry Reid Intl

Tue 11/11

00:43-11:42

1 stop7h 59m

$491

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 15/2

12:40-15:09

Nonstop5h 29m

Las Vegas Harry Reid Intl

Wed 18/2

13:35-23:56

1 stop7h 21m

$497

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 16/2

07:00-23:51

1 stop19h 51m

Las Vegas Harry Reid Intl

Wed 18/2

10:00-05:55

2 stops16h 55m

$522

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Fri 30/1

18:04-23:12

1 stop32h 08m

Las Vegas Harry Reid Intl

Mon 2/2

18:14-17:04

1 stop19h 50m

$545

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 10/2

17:26-22:31

1 stop8h 05m

Las Vegas Harry Reid Intl

Fri 13/2

17:50-17:25

1 stop20h 35m

$554

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 10/12

19:32-21:52

Nonstop5h 20m

Las Vegas Harry Reid Intl

Mon 15/12

00:59-11:23

1 stop7h 24m

$565

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Fri 12/12

17:59-22:36

1 stop7h 37m

Las Vegas Harry Reid Intl

Tue 16/12

23:15-09:10

1 stop6h 55m

$565

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 22/2

17:51-20:50

1 stop29h 59m

Las Vegas Harry Reid Intl

Thu 26/2

08:00-05:55

2 stops18h 55m

$567

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 12/11

07:43-21:31

2 stops16h 48m

Las Vegas Harry Reid Intl

Thu 13/11

06:01-06:23

2 stops21h 22m

$571

Flights are sorted by cheapest return flights first.

Deals found on 15/10

Showing 1-10 of 20 results
1
2

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?

Use this chart to determine the optimal time to book a return flight from Dulles Intl to Las Vegas. Price data was last updated on 10 October 2025.

Booking 20 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, June is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Las Vegas (average of $183). Flying from Washington, D.C. Dulles Intl Airport to Las Vegas in March is currently the most expensive (average of $476). 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 17 October 2025.

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 4 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 Delta, United Airlines, and Alaska Airlines fly from Washington, D.C. Dulles Intl Airport to Las Vegas in about 5h 29m. The time it takes to get you to your destination can typically vary by up to 14h 22m. 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 ITA Airways(100%), Austrian Airlines(95%) or United Airlines(84%), 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, June is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Las Vegas (average of $183). Flying from Washington, D.C. Dulles Intl Airport to Las Vegas in March is currently the most expensive (average of $476). 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.

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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.

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