Which airline has the best punctuality record on Las Vegas to Washington, D.C. flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 9% of flights being delayed.

How often are flights from Las Vegas to Washington, D.C. delayed?

About 11% of weekly flights between Las Vegas and Washington, D.C. have experienced delays in the past year, with the average delay time being 147 minutes.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

What is the most punctual flight time for Las Vegas to Washington, D.C. flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

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

United Airlines and Delta can get you from Las Vegas to Washington, D.C. Dulles Intl Airport in just under 4h 22m. Your travel time can differ by up to 3h 01m. 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 $264 and $291, 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 $80. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Las Vegas to Washington, D.C. Dulles Intl Airport for a low price.

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

The most flights from LAS to IAD are scheduled on a Monday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 $1,079, our data shows the cheapest flight currently is $113. When looking at the most popular route, (Las Vegas Harry Reid Intl - Washington, D.C. Dulles Intl), you can expect to pay $226 for that flight.

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 ITA Airways (100%), 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 most popular airlines that fly from Las Vegas to Washington, D.C. Dulles Intl Airport?

The most popular airlines flying from Las Vegas to Washington, D.C. Dulles Intl Airport are United Airlines, Frontier and Delta. Something to consider prior to booking your flight.

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.

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 5 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.

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.

$140+ Cheap Flights from Las Vegas to Washington, D.C. Dulles Intl Airport

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

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Cheapflights Tip: The best prices from Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl are usually found in August or January, booked 81 days in advance, depart on a Friday or Wednesday and return on a Saturday

Cheap flight deals from Las Vegas to Dulles Intl

Cheapest

Best

Last-minute

One-way

Cheapest flights from Las Vegas to Dulles Intl
Explore the most affordable flight options available from Las Vegas to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2026.

Fri 12/411:43 pm -

1 stop12h 06m

Tue 12/812:06 pm -

1 stop11h 21m

Deal found 11/2

$213

Tue 12/2210:39 pm -

Nonstop4h 28m

Thu 12/318:51 pm -

Nonstop5h 17m

Deal found 10/29

$215

Fri 12/255:26 am -

1 stop11h 24m

Thu 12/318:51 pm -

Nonstop5h 17m

Deal found 11/1

$216

Tue 12/811:43 pm -

1 stop8h 28m

Mon 12/148:55 pm -

1 stop25h 12m

Deal found 11/1

$220

Fri 12/412:59 am -

2 stops10h 50m

Wed 12/912:06 pm -

1 stop11h 21m

Deal found 10/31

$223

Fri 11/209:47 pm -

Nonstop4h 23m

Thu 11/261:09 pm -

Nonstop5h 22m

Deal found 10/30

$224

Fri 12/1810:39 pm -

Nonstop4h 28m

Tue 1/55:30 am -

2 stops21h 14m

Deal found 11/1

$225

Tue 12/17:00 pm -

2 stops13h 11m

Tue 12/812:06 pm -

2 stops14h 52m

Deal found 11/2

$226

Wed 11/259:47 pm -

Nonstop4h 23m

Thu 12/310:33 pm -

1 stop15h 49m

Deal found 10/29

$227

Tue 12/811:43 pm -

1 stop8h 28m

Thu 12/109:23 pm -

1 stop14h 14m

Deal found 10/29

$228

Best flights from Las Vegas to Dulles Intl
Discover carefully curated flight deals from Las Vegas to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 3, 2026.

Thu 2/119:49 am -

1 stop6h 45m

Mon 2/156:00 pm -

Nonstop5h 31m

Deal found 11/1

$315

Sat 11/216:00 am -

1 stop7h 23m

Tue 11/246:00 am -

1 stop7h 35m

Deal found 10/31

$325

Fri 4/1612:00 pm -

1 stop8h 36m

Wed 4/215:25 pm -

1 stop8h 57m

Deal found 11/1

$491

Fri 12/117:50 am -

Nonstop4h 28m

Sun 12/1312:35 pm -

Nonstop5h 17m

Deal found 10/29

$317

Fri 12/41:20 pm -

1 stop8h 19m

Sun 12/67:30 pm -

Nonstop5h 18m

Deal found 10/29

$397

Thu 11/2611:45 pm -

Nonstop4h 22m

Tue 12/17:30 pm -

Nonstop5h 18m

Deal found 10/31

$421

Wed 12/91:20 pm -

1 stop8h 19m

Sat 12/125:35 pm -

Nonstop5h 18m

Deal found 11/2

$427

Tue 4/611:00 pm -

Nonstop4h 22m

Thu 4/85:50 pm -

Nonstop5h 17m

Deal found 10/30

$515

Wed 4/711:00 pm -

Nonstop4h 22m

Mon 4/1212:35 pm -

Nonstop5h 31m

Deal found 10/31

$515

Last-minute flights from Las Vegas to Dulles Intl
Discover last-minute flight deals from Las Vegas to Dulles Intl. Data last updated November 3, 2026 and is based on user searches.

Fri 11/209:47 pm -

Nonstop4h 23m

Thu 11/261:09 pm -

Nonstop5h 22m

Deal found 10/30

$224

Wed 11/259:47 pm -

Nonstop4h 23m

Thu 12/310:33 pm -

1 stop15h 49m

Deal found 10/29

$227

Tue 12/17:00 pm -

2 stops13h 11m

Tue 12/812:06 pm -

2 stops14h 52m

Deal found 11/2

$226

Fri 12/411:43 pm -

1 stop12h 06m

Tue 12/812:06 pm -

1 stop11h 21m

Deal found 11/2

$213

Fri 12/412:59 am -

2 stops10h 50m

Wed 12/912:06 pm -

1 stop11h 21m

Deal found 10/31

$223

Tue 12/811:43 pm -

1 stop8h 28m

Mon 12/148:55 pm -

1 stop25h 12m

Deal found 11/1

$220

Tue 12/811:43 pm -

1 stop8h 28m

Thu 12/109:23 pm -

1 stop14h 14m

Deal found 10/29

$228

Fri 12/1810:39 pm -

Nonstop4h 28m

Tue 1/55:30 am -

2 stops21h 14m

Deal found 11/1

$225

Tue 12/2210:39 pm -

Nonstop4h 28m

Thu 12/318:51 pm -

Nonstop5h 17m

Deal found 10/29

$215

Fri 12/255:26 am -

1 stop11h 24m

Thu 12/318:51 pm -

Nonstop5h 17m

Deal found 11/1

$216

One-way flights from Las Vegas to Dulles Intl
Search for one-way flight options from Las Vegas to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated November 3, 2026.

Wed 12/305:26 am -

2 stops40h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/3

$140

Mon 11/2311:11 pm -

1 stop17h 16m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/2

$142

Fri 12/185:26 am -

1 stop11h 24m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/3

$144

Sun 12/66:00 am -

2 stops29h 49m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/30

$145

Fri 11/2011:59 pm -

2 stops19h 03m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/29

$146

Wed 12/237:35 pm -

1 stop19h 16m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/31

$148

Tue 1/56:00 am -

1 stop7h 45m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/31

$149

Tue 11/246:00 am -

1 stop12h 01m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/30

$150

Mon 12/1411:59 pm -

Nonstop4h 22m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/2

$153

Find flight deals from Las Vegas to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$213 (Expedia)
One-way from	$140 (Kiwi.com)
Popular in	March
Cheapest in	August
Average price	$421
Good round-trip deal	$298 or less
Good one-way deal	$205 or less

Provider with most accurate pricing for Las Vegas Harry Reid Intl-Washington, D.C. Dulles Intl flight deals.

Search Deals

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

Search Deals

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 ($25 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in November 2026

Search Deals

Price to beat on a round-trip flight from Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl.

Search Deals

Price to beat on a one-way flight from Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl.

Search Deals

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

Mon 12/21

11:59 pm-7:28 am

Nonstop4h 29m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$153

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

6:45 pm-5:19 am

1 stop7h 34m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$163

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Wed 2/10

1:16 pm-8:45 pm

Nonstop4h 29m

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 2/16

7:30 am-2:58 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

Fri 3/26

12:35 am-10:01 am

1 stop6h 26m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$233

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Sat 4/3

11:30 pm-8:56 am

1 stop6h 26m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$233

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

Sun 12/6

11:59 pm-7:21 am

Nonstop4h 22m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$254

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Tue 11/10

7:40 am-3:08 pm

Nonstop4h 28m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$278

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Thu 11/12

1:17 pm-8:45 pm

Nonstop4h 28m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$279

Las VegasWashington, D.C.

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

LASIAD

Las Vegas Harry Reid Intl

Sun 2/28

11:55 pm-7:23 am

Nonstop4h 28m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$312

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 19 resultsSorted by cheapest first

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 November.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy2 stars	Trust Score*3 stars
JustAirTicket	Price Accuracy-	Trust Score*1 star
CheapOair	Price Accuracy3 stars	Trust Score*3 stars
Super.com	Price Accuracy-	Trust Score*3 stars
Cheapflightsfares	Price Accuracy2 stars	Trust Score*1 star
Priceline	Price Accuracy1 star	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star
CheapTicketsDeal	Price Accuracy1 star	Trust 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.

LAS-IAD

Estimated round-trip 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 Las Vegas to Washington, D.C. Dulles Intl Airport

Prices

Airlines

Delays

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, August is the cheapest month in which you can book a flight from Las Vegas to Washington, D.C. Dulles Intl Airport (average of $369). 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 73% 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 $249 and $585 in December.
The cheapest round-trip price found within the last 5 days was $213 on Frontier (Dec 4-Dec 8).

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

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 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

8,699 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Delta

7.8

Good

8,699 reviews

Delta

7.8

Good

8,699 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

United Airlines

7.3

Good

10,460 reviews

Delta

7.8

Good

8,699 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Frontier

5.5

Fair

2,511 reviews

Delta

7.8

Good

8,699 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

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 5 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?
United Airlines and Delta can get you from Las Vegas to Washington, D.C. Dulles Intl Airport in just under 4h 22m. Your travel time can differ by up to 3h 01m. 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 $264 and $291, 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 $80. However, be on the lookout for offers from Delta and United Airlines, 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 ITA Airways (100%), 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 $1,079, our data shows the cheapest flight currently is $113. When looking at the most popular route, (Las Vegas Harry Reid Intl - Washington, D.C. Dulles Intl), you can expect to pay $226 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, August is the cheapest month in which you can book a flight from Las Vegas to Washington, D.C. Dulles Intl Airport (average of $369). 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.

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Top 3 airlines flying from Las Vegas to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$144	Average$353	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$264	Average$296	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$291	Average$496	FlexibilityNo cancel fee	On-time69%

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$140+ Cheap flights from Las Vegas (LAS) to Dulles Intl (IAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/30. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Las Vegas to Dulles Intl

Cheapest flights from Las Vegas to Dulles IntlExplore the most affordable flight options available from Las Vegas to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2026.

Explore the most affordable flight options available from Las Vegas to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2026.

Best flights from Las Vegas to Dulles IntlDiscover carefully curated flight deals from Las Vegas to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 3, 2026.

Discover carefully curated flight deals from Las Vegas to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 3, 2026.

Last-minute flights from Las Vegas to Dulles IntlDiscover last-minute flight deals from Las Vegas to Dulles Intl. Data last updated November 3, 2026 and is based on user searches.

Discover last-minute flight deals from Las Vegas to Dulles Intl. Data last updated November 3, 2026 and is based on user searches.

One-way flights from Las Vegas to Dulles IntlSearch for one-way flight options from Las Vegas to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated November 3, 2026.

Search for one-way flight options from Las Vegas to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated November 3, 2026.

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

Compare providers for flights from Las Vegas to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

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 November.

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.

Cheapflights Insights

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?

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 73% 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 $249 and $585 in December.The cheapest round-trip price found within the last 5 days was $213 on Frontier (Dec 4-Dec 8).

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

The most flights from LAS to IAD are scheduled on a Monday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

How often are flights from Las Vegas to Washington, D.C. delayed?

About 11% of weekly flights between Las Vegas and Washington, D.C. have experienced delays in the past year, with the average delay time being 147 minutes.

What is the most punctual flight time for Las Vegas to Washington, D.C. flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Las Vegas to Washington, D.C. flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 9% of flights being delayed.

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

AI-powered summary based on content written by travel experts. AI can make mistakes.

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

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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.

Related info for your journey

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

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

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

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Alternative routes for Las Vegas to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Dulles Intl by adding a car rental and/or hotel reservation to your travel itinerary.

Other flights to Dulles Intl

Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on November 3, 2026.

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Find flights from Las Vegas to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Las Vegas and Dulles Intl flights

Cheapest flights from Las Vegas to Dulles Intl
Explore the most affordable flight options available from Las Vegas to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2026.

Best flights from Las Vegas to Dulles Intl
Discover carefully curated flight deals from Las Vegas to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 3, 2026.

Last-minute flights from Las Vegas to Dulles Intl
Discover last-minute flight deals from Las Vegas to Dulles Intl. Data last updated November 3, 2026 and is based on user searches.

One-way flights from Las Vegas to Dulles Intl
Search for one-way flight options from Las Vegas to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated November 3, 2026.

Las Vegas to Washington, D.C. Dulles Intl Airport flights typically cost between $249 and $585 in December.
The cheapest round-trip price found within the last 5 days was $213 on Frontier (Dec 4-Dec 8).