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Dulles Intl

$85+ Cheap flights from Las Vegas (LAS) to Dulles Intl (IAD)

LAS — IAD
Oct 18 — Oct 251
Sun 10/18
Sun 10/25
1 adult, Economy
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Find cheap flights from Las Vegas to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl are usually found in October or August, booked 81 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from Las Vegas to Dulles Intl

Cheapest flights from Las Vegas to Dulles Intl

Tue 10/610:46 pm -
Nonstop4h 34m
Tue 10/136:00 am -
Nonstop5h 04m
Deal found 9/17$146
Tue 10/1310:43 pm -
Nonstop4h 37m
Tue 10/206:00 am -
Nonstop5h 04m
Deal found 9/15$147
Wed 10/1410:43 pm -
Nonstop4h 37m
Tue 10/206:00 am -
Nonstop5h 04m
Deal found 9/14$152
Wed 10/2110:43 pm -
Nonstop4h 37m
Mon 10/266:00 am -
Nonstop5h 04m
Deal found 9/17$157
Sat 10/1010:43 pm -
Nonstop4h 37m
Sat 10/176:00 am -
Nonstop5h 04m
Deal found 9/17$169
Thu 10/2210:43 pm -
Nonstop4h 37m
Mon 10/266:00 am -
Nonstop5h 04m
Deal found 9/16$170
Sat 10/1010:43 pm -
Nonstop4h 37m
Tue 10/136:00 am -
Nonstop5h 04m
Deal found 9/15$171
Wed 10/1410:43 pm -
Nonstop4h 37m
Wed 10/216:00 am -
Nonstop5h 04m
Deal found 9/17$173

Find flight deals from Las Vegas to Dulles Intl

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$146
(Super.com)

One-way from

$85
(Cheapflightsfares)

Popular in

March

Cheapest in

October

Average price

$417

Good round-trip deal

$352 or less

Good one-way deal

$179 or less
Provider with most accurate pricing for Las Vegas Harry Reid Intl-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Las Vegas Harry Reid Intl-Washington, D.C. Dulles Intl flights.
Search Deals
From Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl
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One-way flight from Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Las Vegas to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Sat 12/5

10:24 am-8:03 pm

1 stop6h 39m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$146

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Thu 12/31

7:00 am-5:22 pm

1 stop7h 22m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$155

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Mon 11/2

11:37 pm-11:50 am

1 stop9h 13m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$155

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Tue 10/13

11:30 pm-9:19 am

1 stop6h 49m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$155
Quickest round-trip

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Fri 2/12

11:00 pm-6:22 am

Nonstop4h 22m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$173

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Tue 11/17

11:45 pm-7:07 am

Nonstop4h 22m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$182

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Wed 12/30

11:59 pm-7:28 am

Nonstop4h 29m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$193

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Thu 10/29

11:45 pm-7:07 am

Nonstop4h 22m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$200

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Tue 12/15

7:50 am-3:18 pm

Nonstop4h 28m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$204

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Tue 9/29

9:25 am-1:09 pm

1 stop24h 44m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$206

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from Las Vegas to Dulles Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Las Vegas to Dulles Intl in September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
Super.comPrice Accuracy-Trust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapTicketsDealPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Las Vegas-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Las Vegas-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Las Vegas-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Las Vegas-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Las Vegas-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Las Vegas with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

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

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

Booking 78 days in advance of your planned departure date is, on average, the best time to get cheap flights from Las Vegas to Washington, D.C. Dulles Intl Airport. 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 Las Vegas to Washington, D.C. Dulles Intl Airport?

Currently, October is the cheapest month in which you can book a flight from Las Vegas to Washington, D.C. Dulles Intl Airport (average of $360). Flying from Las Vegas to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $537). 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 LAS to IAD?

It’s optimal to fly from Las Vegas to Washington, D.C. Dulles Intl Airport in the evening. By choosing this option you can save up to 72% on the cost of your flight, compared to a flight in the afternoon.

How much does it cost to fly round-trip from Las Vegas to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.

Las Vegas to Washington, D.C. Dulles Intl Airport flights typically cost between $268 and $459 in October.
The cheapest round-trip price found within the last 5 days was $146 on Frontier (Oct 6-Oct 13).

The best insider tips for Las Vegas to Washington, D.C. Dulles Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Las Vegas to Washington, D.C. Dulles Intl Airport trip
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on IAD and LAS

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Las Vegas to Washington, D.C. Dulles Intl Airport, such as Delta,United Airlines, andFrontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,588 reviews

Boarding

8.1

Food

7.2

Comfort

7.8

Entertainment

7.8

Overall

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay
Delta
7.8
Good
8,588 reviews
Delta
7.8
Good
8,588 reviews

Boarding

8.1

Food

7.2

Comfort

7.8

Entertainment

7.8

Overall

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay
United Airlines
7.4
Good
10,229 reviews
Delta
7.8
Good
8,588 reviews

Boarding

8.1

Food

7.2

Comfort

7.8

Entertainment

7.8

Overall

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay
Frontier
5.6
Fair
2,598 reviews
Delta
7.8
Good
8,588 reviews

Boarding

8.1

Food

7.2

Comfort

7.8

Entertainment

7.8

Overall

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay

Related info for your journey

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

    Las Vegas Harry Reid Intl (LAS) is the airport you will fly out of if you book a flight from Las Vegas to Washington, D.C. Dulles Intl. You should not have trouble finding flights to Washington, D.C. Dulles Intl from Harry Reid Intl; the airport handles an average of 7 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Las Vegas airport to Washington, D.C. Dulles Intl. It is only a 6.2 mi journey to Harry Reid Intl (LAS) from Las Vegas’s city center.

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

    Frontier, Delta, and United Airlines can get you from Las Vegas to Washington, D.C. Dulles Intl Airport in just under 6h 35m. Your travel time can differ by up to 1h 37m. There are 2059 mi between Las Vegas and Washington, D.C. Dulles Intl Airport. This flight may include one or multiple stops.

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

    Flying on Frontier is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $144. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $256 and $267, respectively. Users have found that Frontier is 66% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $96. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from Las Vegas to Washington, D.C. Dulles Intl Airport for a low price.

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

    No one likes to see their flight delayed. When booking a flight from Las Vegas to Washington, D.C. Dulles Intl Airport consider choosing Ethiopian Air (98%), Austrian Airlines (93%) or Brussels Airlines (93%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Las Vegas to Washington, D.C. Dulles Intl Airport?

    While on average a flight from Las Vegas to Washington, D.C. Dulles Intl Airport is generally $858, our data shows the cheapest flight currently is $124. When looking at the most popular route, (Las Vegas Harry Reid Intl - Washington, D.C. Dulles Intl), you can expect to pay $185 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Las Vegas to Dulles Intl 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 Las Vegas to Washington, D.C. Dulles Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Las Vegas to Washington, D.C. Dulles Intl Airport (average of $360). Flying from Las Vegas to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $537). 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

Traveling 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
Alexandria
Arlington
Owings Mills
Lanham
Tysons
Woodbridge
Reston
Chantilly
Herndon
Hyattsville
Rockville
Fredericksburg
Falls Church
Sterling
Hanover
Laurel
Springfield
Oxon Hill
Clinton
Hunt Valley

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Las Vegas to Dulles Intl

Las Vegas to Reagan-National flights
Las Vegas to Baltimore flights
Reno to Dulles Intl flights
Reno to Baltimore flights
Reno to Reagan-National flights
Twin Falls to Baltimore flights

Top 3 airlines flying from Las Vegas to Dulles Intl

AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$144Average$356FlexibilityNo cancel feeOn-time62%
DeltaCheapest$256Average$276FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$267Average$481FlexibilityNo cancel feeOn-time69%

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