Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Washington, D.C. Dulles Intl Airport to Las Vegas from $171

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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LAS
20 Apr — 27 Apr1
1 adult

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 15 April 2025.

Round-trip from

$321

One-way from

$171

Popular in

December

Cheapest in

May

Average price

$728
Frontier
  • Frontier
  • 7/5-10/5
  • 1 total stop
  • 15h 30m total
  • Washington, D.C. to Las Vegas
Search Deals
United Airlines
  • United Airlines
  • 2/7
  • Nonstop
  • 5h 04m total
  • Washington, D.C. to Las Vegas
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($52 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Dulles Intl to Las Vegas

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 15 April 2025.

Wed 7/507:00IAD - LAS
1 stop10h 59mMultiple Airlines
Sat 10/523:00LAS - IAD
Nonstop4h 31mMultiple Airlines
Deal found 14/4$321
Tue 13/517:00IAD - LAS
1 stop8h 24mAlaska Airlines
Wed 21/517:51LAS - IAD
1 stop10h 45mAlaska Airlines
Deal found 13/4$329
Mon 5/517:55IAD - LAS
Nonstop5h 19mUnited Airlines
Sat 10/518:20LAS - IAD
1 stop8h 03mUnited Airlines
Deal found 13/4$355
Wed 18/606:20IAD - LAS
1 stop9h 10mDelta
Fri 20/600:55LAS - IAD
1 stop6h 19mDelta
Deal found 15/4$407
Wed 7/507:50IAD - LAS
2 stops12h 15mSouthwest
Mon 12/505:20LAS - IAD
1 stop8h 30mSouthwest
Deal found 15/4$443
Thu 8/512:49IAD - LAS
1 stop21h 44mSun Country Air
Sat 10/518:43LAS - IAD
1 stop14h 40mSun Country Air
Deal found 14/4$467
Mon 28/406:30IAD - LAS
1 stop9h 27mHawaiian Airlines
Fri 9/507:08LAS - IAD
1 stop7h 51mHawaiian Airlines
Deal found 14/4$481

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 15 April 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

Wed 7/5

07:00-14:59

1 stop10h 59m

Las Vegas Harry Reid Intl

Sat 10/5

23:00-06:31

Nonstop4h 31m

$321

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 13/5

17:00-22:24

1 stop8h 24m

Las Vegas Harry Reid Intl

Wed 21/5

17:51-07:36

1 stop10h 45m

$329

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 5/5

17:55-20:14

Nonstop5h 19m

Las Vegas Harry Reid Intl

Sat 10/5

18:20-05:23

1 stop8h 03m

$355

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 7/5

17:00-22:24

1 stop8h 24m

Las Vegas Harry Reid Intl

Sat 10/5

06:00-16:00

1 stop7h 00m

$393

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 18/6

06:20-12:30

1 stop9h 10m

Las Vegas Harry Reid Intl

Fri 20/6

00:55-10:14

1 stop6h 19m

$407

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 7/5

07:50-17:05

2 stops12h 15m

Las Vegas Harry Reid Intl

Mon 12/5

05:20-16:50

1 stop8h 30m

$443

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Thu 8/5

12:49-07:33

1 stop21h 44m

Las Vegas Harry Reid Intl

Sat 10/5

18:43-12:23

1 stop14h 40m

$467

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 2/7

19:51-21:55

Nonstop5h 04m

$171

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 13/5

06:30-12:57

1 stop9h 27m

$174

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 25/5

17:14-22:30

1 stop8h 16m

$185

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 15 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 11 April 2025.

Booking 70 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, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Las Vegas (average of $978). Flying from Washington, D.C. Dulles Intl Airport to Las Vegas in December is currently the most expensive (average of $1,549). 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 15 April 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.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Las Vegas

Explore weekly flight availability from Dulles Intl to Las Vegas. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 15 April 2025.

The most flights from IAD to LAS are scheduled on a Monday (9 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (8 on average).

Rainfall in Las Vegas by month

Plan your trip to Las Vegas by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Las Vegas ranges from 3.0 - 20.0 inches per month. February is typically the wettest month, when rainfall can reach 20.0 mm. May is typically the driest time to visit Las Vegas when rainfall is around 3.0 mm.

Temperature in Las Vegas by month

Plan your trip to Las Vegas by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Las Vegas, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 34.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 9.0 C).

Reviews of airlines servicing Las Vegas

Get insights into the airlines that provide service to Las Vegas. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Las Vegas. Reviews last updated 15 April 2025.
To help decide which airline to fly from Washington, D.C. to Las Vegas, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
9,871 reviews
Check prices

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very Good
9,871 reviews
Alaska Airlines
8.0
Very Good
9,871 reviews
Check prices

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very Good
4,279 reviews
Alaska Airlines
8.0
Very Good
9,871 reviews
Check prices

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very Good
7,916 reviews
Alaska Airlines
8.0
Very Good
9,871 reviews
Check prices

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,375 reviews
Alaska Airlines
8.0
Very Good
9,871 reviews
Check prices

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,656 reviews
Alaska Airlines
8.0
Very Good
9,871 reviews
Check prices

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 8 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.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Las Vegas round-trip?

    According to our current data, Alaska Airlines ($329), United Airlines ($355), and Hawaiian Airlines ($375) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Las Vegas. Alaska Airlines is priced at 55% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Las Vegas one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $171. Users have also found prices from $174 and $185 on Alaska Airlines and Hawaiian Airlines, respectively.

  • 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(82%), Austrian Airlines(66%) or United Airlines(57%), 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, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Las Vegas (average of $978). Flying from Washington, D.C. Dulles Intl Airport to Las Vegas in December is currently the most expensive (average of $1,549). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport 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.
Site
©2025 Cheapflights