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

About 10% of weekly flights between Las Vegas and Washington, D.C. have experienced delays in the past year, with the average delay time being 156 minutes.

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.

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

Tuesday tends to have the lowest number of delays on this route, whereas Sunday 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 at night tend to experience delays more often.

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

Frontier and Delta can get you from Las Vegas to Washington, D.C. Dulles Intl Airport in just under 9h 06m. Your travel time can differ by up to 22m. 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 $128. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at $221 and $256, respectively. Users have found that Frontier is 65% 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 $66. However, be on the lookout for offers from United Airlines and Southwest, 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 Thursday, which is when the least amount of flights are scheduled (3 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 $965, our data shows the cheapest flight currently is $115. When looking at the most popular route, (Las Vegas Harry Reid Intl - Washington, D.C. Dulles Intl), you can expect to pay $173 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 Ethiopian Air (92%), Austrian Airlines (90%) or Brussels Airlines (90%) 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Las Vegas-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

$116+ Flights from Las Vegas to Washington, D.C. Dulles Intl Airport

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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 July or May, booked 67 days in advance, depart on a Thursday or Friday and return on a Saturday

Cheap flight deals from Las Vegas to Dulles Intl

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 December 23, 2025.

Wed 12/246:05 amLAS - IAD

1 stop8h 42mFrontier

Mon 1/265:33 pmIAD - LAS

1 stop8h 24mFrontier

Deal found 12/22

$253

Wed 12/3110:31 pmLAS - IAD

1 stop10h 07mFrontier

Sat 1/35:15 amIAD - LAS

1 stop13h 43mFrontier

Deal found 12/20

$299

Wed 12/3110:31 pmLAS - IAD

1 stop10h 07mFrontier

Mon 1/56:05 amIAD - LAS

1 stop12h 53mFrontier

Deal found 12/22

$301

Wed 12/3110:31 pmLAS - IAD

1 stop10h 07mFrontier

Sun 1/45:35 amIAD - LAS

1 stop13h 23mFrontier

Deal found 12/22

$308

Mon 12/296:05 amLAS - IAD

1 stop9h 11mFrontier

Mon 1/59:58 pmIAD - LAS

1 stop14h 45mFrontier

Deal found 12/22

$363

Sun 12/2810:01 pmLAS - IAD

1 stop12h 13mFrontier

Thu 1/15:35 amIAD - LAS

1 stop13h 23mFrontier

Deal found 12/21

$373

Mon 12/296:05 amLAS - IAD

1 stop9h 11mFrontier

Sun 1/118:35 amIAD - LAS

1 stop28h 33mFrontier

Deal found 12/22

$378

Mon 12/296:05 amLAS - IAD

1 stop9h 11mFrontier

Sun 1/45:35 amIAD - LAS

1 stop13h 23mFrontier

Deal found 12/21

$393

Mon 12/296:05 amLAS - IAD

1 stop9h 11mFrontier

Fri 1/29:58 pmIAD - LAS

1 stop13h 27mFrontier

Deal found 12/20

$398

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 December 23, 2025.

Wed 1/1411:37 pmLAS - IAD

1 stop9h 06mFrontier

Sun 1/1811:00 amIAD - LAS

1 stop12h 52mFrontier

Deal found 12/23

$216

Wed 2/411:59 pmLAS - IAD

1 stop13h 29mMultiple Airlines

Tue 2/105:26 pmIAD - LAS

1 stop8h 05mMultiple Airlines

Deal found 12/22

$240

Sat 2/2111:06 amLAS - IAD

1 stop9h 28mDelta

Wed 2/257:30 amIAD - LAS

1 stop10h 32mDelta

Deal found 12/21

$245

Wed 2/411:50 pmLAS - IAD

Nonstop4h 23mUnited Airlines

Tue 2/106:45 pmIAD - LAS

1 stop8h 14mUnited Airlines

Deal found 12/22

$277

Wed 2/46:00 amLAS - IAD

1 stop7h 50mSouthwest

Tue 2/109:05 amIAD - LAS

2 stops10h 30mSouthwest

Deal found 12/22

$292

Thu 2/511:59 pmLAS - IAD

1 stop13h 34mMultiple Airlines

Tue 2/105:26 pmIAD - LAS

1 stop8h 05mMultiple Airlines

Deal found 12/22

$240

Thu 1/1511:00 amLAS - IAD

1 stop9h 10mDelta

Wed 2/47:30 amIAD - LAS

1 stop10h 30mDelta

Deal found 12/21

$245

Sat 1/1711:00 amLAS - IAD

1 stop9h 10mDelta

Sat 1/317:30 amIAD - LAS

1 stop10h 30mDelta

Deal found 12/22

$245

Wed 2/47:30 amLAS - IAD

1 stop8h 51mUnited Airlines

Wed 2/118:30 amIAD - LAS

Nonstop5h 27mUnited Airlines

Deal found 12/21

$277

Thu 2/1911:05 amLAS - IAD

1 stop9h 05mDelta

Mon 2/237:30 amIAD - LAS

1 stop10h 32mDelta

Deal found 12/21

$245

Wed 1/1411:53 amLAS - IAD

1 stop6h 18mUnited Airlines

Wed 1/2812:35 pmIAD - LAS

Nonstop5h 24mUnited Airlines

Deal found 12/20

$297

Thu 1/2211:00 amLAS - IAD

1 stop9h 10mDelta

Thu 2/57:30 amIAD - LAS

1 stop13h 11mDelta

Deal found 12/21

$295

Last-minute flights from Las Vegas to Dulles Intl
Discover last-minute flight deals from Las Vegas to Dulles Intl. Data last updated December 23, 2025 and is based on user searches.

Wed 1/712:26 pmLAS - IAD

1 stop29h 30mFrontier

Wed 1/146:00 amIAD - LAS

1 stop16h 54mFrontier

Deal found 12/22

$210

Wed 1/712:26 pmLAS - IAD

1 stop29h 30mMultiple Airlines

Thu 2/54:13 pmIAD - LAS

1 stop19h 57mMultiple Airlines

Deal found 12/21

$221

Wed 1/710:58 pmLAS - IAD

1 stop9h 30mFrontier

Thu 2/55:37 pmIAD - LAS

1 stop8h 20mFrontier

Deal found 12/21

$232

Wed 1/710:58 pmLAS - IAD

1 stop9h 30mMultiple Airlines

Wed 1/145:26 pmIAD - LAS

1 stop8h 05mMultiple Airlines

Deal found 12/21

$234

Wed 1/712:26 pmLAS - IAD

1 stop29h 30mMultiple Airlines

Wed 2/48:00 amIAD - LAS

2 stops31h 06mMultiple Airlines

Deal found 12/21

$241

Fri 1/910:45 pmLAS - IAD

1 stop29h 55mFrontier

Sat 1/179:33 amIAD - LAS

1 stop27h 37mFrontier

Deal found 12/22

$235

Sat 1/1012:27 pmLAS - IAD

1 stop29h 29mFrontier

Fri 2/2010:23 amIAD - LAS

1 stop14h 18mFrontier

Deal found 12/21

$226

Mon 1/1211:33 pmLAS - IAD

1 stop9h 10mFrontier

Sun 2/85:37 pmIAD - LAS

1 stop8h 20mFrontier

Deal found 12/21

$217

Wed 1/1411:37 pmLAS - IAD

1 stop9h 06mMultiple Airlines

Wed 1/285:26 pmIAD - LAS

1 stop8h 05mMultiple Airlines

Deal found 12/20

$214

Wed 1/1411:37 pmLAS - IAD

1 stop9h 06mFrontier

Sun 1/1811:00 amIAD - LAS

1 stop12h 52mFrontier

Deal found 12/23

$216

Sat 1/1711:37 pmLAS - IAD

1 stop9h 06mFrontier

Fri 2/65:33 pmIAD - LAS

1 stop8h 24mFrontier

Deal found 12/21

$236

Wed 1/2111:59 pmLAS - IAD

1 stop13h 29mMultiple Airlines

Tue 1/275:26 pmIAD - LAS

1 stop8h 05mMultiple Airlines

Deal found 12/21

$223

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 December 23, 2025.

Sat 3/712:40 pmLAS - IAD

1 stop14h 44mFrontier

Deal found 12/22

$116

Tue 1/274:17 pmLAS - IAD

2 stops39h 25mFrontier

Deal found 12/21

$117

Mon 1/510:31 pmLAS - IAD

1 stop9h 57mFrontier

Deal found 12/22

$118

Wed 1/72:00 pmLAS - IAD

2 stops27h 56mFrontier

Deal found 12/21

$121

Tue 2/246:00 amLAS - IAD

1 stop8h 27mAlaska Airlines

Deal found 12/21

$123

Tue 1/2011:51 amLAS - IAD

3 stops43h 51mMultiple Airlines

Deal found 12/21

$124

Fri 2/611:36 pmLAS - IAD

1 stop8h 08mFrontier

Deal found 12/22

$126

Fri 1/99:24 amLAS - IAD

2 stops23h 04mMultiple Airlines

Deal found 12/22

$127

Wed 2/1812:57 pmLAS - IAD

3 stops18h 36mMultiple Airlines

Deal found 12/21

$128

Tue 2/36:14 pmLAS - IAD

1 stop19h 50mAlaska Airlines

Deal found 12/21

$129

Sun 1/256:00 amLAS - IAD

2 stops31h 28mFrontier

Deal found 12/21

$130

Find flight deals from Las Vegas to Dulles Intl

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$206 (Kiwi.com)
One-way from	$116 (Cheapflightsfares)
Popular in	January
Cheapest in	July
Average price	$463
Good round-trip deal	$329 or less
Good one-way deal	$221 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. 20% potential increase in price ($98 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

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

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 1/14

11:37 pm-11:43 am

1 stop9h 06m

Washington, D.C. Dulles Intl

Sun 1/18

11:00 am-8:52 pm

1 stop12h 52m

$216

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 2/4

11:59 pm-4:28 pm

1 stop13h 29m

Washington, D.C. Dulles Intl

Tue 2/10

5:26 pm-10:31 pm

1 stop8h 05m

$240

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 2/5

11:59 pm-4:33 pm

1 stop13h 34m

Washington, D.C. Dulles Intl

Tue 2/10

5:26 pm-10:31 pm

1 stop8h 05m

$240

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Sat 2/21

11:06 am-11:34 pm

1 stop9h 28m

Washington, D.C. Dulles Intl

Wed 2/25

7:30 am-3:02 pm

1 stop10h 32m

$245

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 1/15

11:00 am-11:10 pm

1 stop9h 10m

Washington, D.C. Dulles Intl

Wed 2/4

7:30 am-3:00 pm

1 stop10h 30m

$245

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Sat 1/17

11:00 am-11:10 pm

1 stop9h 10m

Washington, D.C. Dulles Intl

Sat 1/31

7:30 am-3:00 pm

1 stop10h 30m

$245

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 2/19

11:05 am-11:10 pm

1 stop9h 05m

Washington, D.C. Dulles Intl

Mon 2/23

7:30 am-3:02 pm

1 stop10h 32m

$245

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 2/4

11:50 pm-7:13 am

Nonstop4h 23m

Washington, D.C. Dulles Intl

Tue 2/10

6:45 pm-11:59 pm

1 stop8h 14m

$277

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 2/4

7:30 am-7:21 pm

1 stop8h 51m

Washington, D.C. Dulles Intl

Wed 2/11

8:30 am-10:57 am

Nonstop5h 27m

$277

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 2/4

6:00 am-4:50 pm

1 stop7h 50m

Washington, D.C. Dulles Intl

Tue 2/10

9:05 am-4:35 pm

2 stops10h 30m

$292

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 24 results

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 December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
Priceline	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Las Vegas-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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

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 67 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, May is the cheapest month in which you can book a flight from Las Vegas to Washington, D.C. Dulles Intl Airport (average of $111). Flying from Las Vegas to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $305). 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 afternoon. By choosing this option you can save up to 53% on the cost of your flight, compared to a flight at noon.

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

Airports

LAS

Try the self-service TSA screening at LAS for a quicker security process. Follow video instructions to breeze through.

IAD

Use the Silver Line Metro to reach downtown D.C. from IAD in under 40 minutes, a cost-effective option.

Our travel experts

Ramsey Qubein

Expert on IAD and LAS

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, and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

8,015 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Delta

7.9

Good

8,015 reviews

Delta

7.9

Good

8,015 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,109 reviews

Delta

7.9

Good

8,015 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Frontier

5.8

Fair

3,073 reviews

Delta

7.9

Good

8,015 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

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?
Frontier and Delta can get you from Las Vegas to Washington, D.C. Dulles Intl Airport in just under 9h 06m. Your travel time can differ by up to 22m. 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 $128. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at $221 and $256, respectively. Users have found that Frontier is 65% 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 $66. However, be on the lookout for offers from United Airlines and Southwest, 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 (92%), Austrian Airlines (90%) or Brussels Airlines (90%) 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 $965, our data shows the cheapest flight currently is $115. When looking at the most popular route, (Las Vegas Harry Reid Intl - Washington, D.C. Dulles Intl), you can expect to pay $173 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, May is the cheapest month in which you can book a flight from Las Vegas to Washington, D.C. Dulles Intl Airport (average of $111). Flying from Las Vegas to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $305). 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

Alexandria

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Top 3 airlines flying from Las Vegas to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$148	Average$217	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$222	Average$392	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$256	Average$308	FlexibilityNo cancel fee	On-timeN/A

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$116+ Cheap flights from Las Vegas (LAS) to Dulles Intl (IAD)

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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.

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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 July or May, booked 67 days in advance, depart on a Thursday or Friday and return on a Saturday

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 December 23, 2025.

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 December 23, 2025.

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

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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?

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?

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

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

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

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

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

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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, and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Las Vegas to Dulles Intl. 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 from for flights from Las Vegas to Washington, D.C. Dulles Intl?

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

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Top 3 airlines flying from Las Vegas to Dulles Intl

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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 December 23, 2025.