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 166 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 at night tend to experience delays more often.

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.

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

Over the last year, American Airlines have had the lowest number of delays on this route, with no flights being classified as delayed.

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

Delta and United Airlines can get you from Las Vegas to Washington, D.C. Dulles Intl Airport in just under 7h 16m. Your travel time can differ by up to 11m. 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 $141. Additional round-trip tickets that might be worth considering are offered by Southwest and United Airlines, with the lowest prices starting at $204 and $228, respectively. Users have found that Frontier is 63% 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 United Airlines, with whom users have recently found tickets for as low as $127. However, be on the lookout for offers from Delta and Alaska Airlines, as they are both options that can get you from Las Vegas to Washington, D.C. Dulles Intl Airport for a low price.

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 $931, our data shows the cheapest flight currently is $121. When looking at the most popular route, (Las Vegas Harry Reid Intl - Washington, D.C. Dulles Intl), you can expect to pay $197 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 Austrian Airlines (100%), Brussels Airlines (100%) or Ethiopian Air (98%) 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 4 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.

$119+ 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 July or May, booked 67 days in advance, depart on a Thursday or Friday and return on a Saturday

Find 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 October 23, 2025.

Thu 11/1312:44 pmLAS - IAD

1 stop8h 27mFrontier

Mon 11/178:37 pmIAD - LAS

1 stop16h 30mFrontier

Deal found 10/22

$170

Fri 12/510:32 pmLAS - IAD

1 stop21h 33mMultiple Airlines

Fri 12/125:19 pmIAD - LAS

2 stops17h 00mMultiple Airlines

Deal found 10/20

$178

Fri 11/710:38 pmLAS - IAD

1 stop22h 17mFrontier

Wed 12/246:05 amIAD - LAS

2 stops19h 34mFrontier

Deal found 10/21

$180

Thu 11/1312:44 pmLAS - IAD

1 stop8h 27mMultiple Airlines

Sat 11/155:58 amIAD - LAS

2 stops28h 28mMultiple Airlines

Deal found 10/23

$190

Thu 11/1312:44 pmLAS - IAD

1 stop8h 27mFrontier

Sun 11/166:00 amIAD - LAS

1 stop18h 28mFrontier

Deal found 10/23

$192

Thu 11/610:14 pmLAS - IAD

1 stop15h 20mMultiple Airlines

Sat 11/85:58 amIAD - LAS

1 stop28h 41mMultiple Airlines

Deal found 10/21

$193

Thu 11/612:44 pmLAS - IAD

1 stop8h 27mFrontier

Sat 12/139:20 pmIAD - LAS

1 stop15h 23mFrontier

Deal found 10/21

$196

Fri 11/148:34 amLAS - IAD

1 stop12h 37mMultiple Airlines

Sat 11/155:58 amIAD - LAS

2 stops20h 31mMultiple Airlines

Deal found 10/23

$197

Fri 11/148:34 amLAS - IAD

1 stop12h 37mMultiple Airlines

Sun 11/166:00 amIAD - LAS

1 stop18h 28mMultiple Airlines

Deal found 10/23

$198

Thu 11/1312:44 pmLAS - IAD

1 stop8h 27mMultiple Airlines

Sun 11/164:04 pmIAD - LAS

2 stops30h 48mMultiple Airlines

Deal found 10/23

$199

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 October 23, 2025.

Fri 12/121:56 pmLAS - IAD

1 stop7h 16mDelta

Wed 12/177:01 amIAD - LAS

1 stop7h 29mDelta

Deal found 10/21

$257

Thu 2/1912:59 amLAS - IAD

1 stop7h 27mUnited Airlines

Tue 2/245:45 pmIAD - LAS

Nonstop5h 37mUnited Airlines

Deal found 10/21

$265

Mon 12/1512:44 amLAS - IAD

1 stop7h 51mDelta

Wed 12/177:01 amIAD - LAS

1 stop9h 48mDelta

Deal found 10/22

$257

Tue 3/312:05 pmLAS - IAD

1 stop9h 02mDelta

Wed 3/41:00 pmIAD - LAS

1 stop8h 56mDelta

Deal found 10/20

$257

Wed 12/101:50 pmLAS - IAD

Nonstop4h 20mUnited Airlines

Wed 12/178:20 amIAD - LAS

Nonstop5h 13mUnited Airlines

Deal found 10/21

$297

Tue 3/31:55 pmLAS - IAD

Nonstop4h 25mUnited Airlines

Wed 3/412:40 pmIAD - LAS

Nonstop5h 29mUnited Airlines

Deal found 10/21

$297

Sat 12/137:04 pmLAS - IAD

1 stop8h 47mUnited Airlines

Wed 12/178:20 amIAD - LAS

Nonstop5h 13mUnited Airlines

Deal found 10/21

$303

Sun 12/1411:53 pmLAS - IAD

Nonstop4h 19mUnited Airlines

Wed 12/178:20 amIAD - LAS

Nonstop5h 13mUnited Airlines

Deal found 10/21

$315

Mon 12/157:04 pmLAS - IAD

1 stop8h 47mUnited Airlines

Wed 12/178:20 amIAD - LAS

Nonstop5h 13mUnited Airlines

Deal found 10/22

$321

Tue 12/161:50 pmLAS - IAD

Nonstop4h 20mUnited Airlines

Wed 12/178:20 amIAD - LAS

1 stop9h 46mUnited Airlines

Deal found 10/22

$325

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

Thu 11/610:14 pmLAS - IAD

1 stop15h 20mMultiple Airlines

Sat 11/85:58 amIAD - LAS

1 stop28h 41mMultiple Airlines

Deal found 10/21

$193

Thu 11/612:44 pmLAS - IAD

1 stop8h 27mFrontier

Sat 12/139:20 pmIAD - LAS

1 stop15h 23mFrontier

Deal found 10/21

$196

Thu 11/68:34 amLAS - IAD

1 stop12h 37mMultiple Airlines

Mon 11/106:00 amIAD - LAS

2 stops19h 54mMultiple Airlines

Deal found 10/21

$201

Fri 11/710:38 pmLAS - IAD

1 stop22h 17mFrontier

Wed 12/246:05 amIAD - LAS

2 stops19h 34mFrontier

Deal found 10/21

$180

Thu 11/1312:44 pmLAS - IAD

1 stop8h 27mFrontier

Mon 11/178:37 pmIAD - LAS

1 stop16h 30mFrontier

Deal found 10/22

$170

Thu 11/1312:44 pmLAS - IAD

1 stop8h 27mMultiple Airlines

Sat 11/155:58 amIAD - LAS

2 stops28h 28mMultiple Airlines

Deal found 10/23

$190

Thu 11/1312:44 pmLAS - IAD

1 stop8h 27mFrontier

Sun 11/166:00 amIAD - LAS

1 stop18h 28mFrontier

Deal found 10/23

$192

Thu 11/1312:44 pmLAS - IAD

1 stop8h 27mMultiple Airlines

Sun 11/164:04 pmIAD - LAS

2 stops30h 48mMultiple Airlines

Deal found 10/23

$199

Fri 11/148:34 amLAS - IAD

1 stop12h 37mMultiple Airlines

Sat 11/155:58 amIAD - LAS

2 stops20h 31mMultiple Airlines

Deal found 10/23

$197

Fri 11/148:34 amLAS - IAD

1 stop12h 37mMultiple Airlines

Sun 11/166:00 amIAD - LAS

1 stop18h 28mMultiple Airlines

Deal found 10/23

$198

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 October 23, 2025.

Fri 11/710:38 pmLAS - IAD

1 stop22h 17mFrontier

Deal found 10/23

$119

Mon 1/264:47 pmLAS - IAD

2 stops21h 01mMultiple Airlines

Deal found 10/21

$121

Mon 12/157:04 pmLAS - IAD

1 stop8h 47mUnited Airlines

Deal found 10/23

$122

Mon 11/1711:59 pmLAS - IAD

2 stops17h 21mMultiple Airlines

Deal found 10/23

$123

Thu 11/209:00 amLAS - IAD

2 stops11h 59mMultiple Airlines

Deal found 10/21

$124

Mon 11/38:48 pmLAS - IAD

2 stops20h 32mFrontier

Deal found 10/20

$125

Wed 11/512:41 amLAS - IAD

2 stops12h 53mFrontier

Deal found 10/23

$126

Wed 1/712:59 amLAS - IAD

1 stop7h 24mUnited Airlines

Deal found 10/21

$127

Mon 11/2411:00 amLAS - IAD

2 stops45h 52mFrontier

Deal found 10/22

$128

Mon 12/2212:35 amLAS - IAD

1 stop6h 11mDelta

Deal found 10/23

$129

Cheap flight deals from Las Vegas to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$170 (CheapOair)
One-way from	$119 (Kiwi.com)
Popular in	October
Cheapest in	July
Average price	$533
Good round-trip deal	$407 or less
Good one-way deal	$177 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. 12% potential increase in price ($55 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 October 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

Fri 12/12

1:56 pm-12:12 am

1 stop7h 16m

Washington, D.C. Dulles Intl

Wed 12/17

7:01 am-11:30 am

1 stop7h 29m

$257

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Mon 12/15

12:44 am-11:35 am

1 stop7h 51m

Washington, D.C. Dulles Intl

Wed 12/17

7:01 am-1:49 pm

1 stop9h 48m

$257

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Tue 3/3

12:05 pm-12:07 am

1 stop9h 02m

Washington, D.C. Dulles Intl

Wed 3/4

1:00 pm-6:56 pm

1 stop8h 56m

$257

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 2/19

12:59 am-11:26 am

1 stop7h 27m

Washington, D.C. Dulles Intl

Tue 2/24

5:45 pm-8:22 pm

Nonstop5h 37m

$265

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 12/10

1:50 pm-9:10 pm

Nonstop4h 20m

Washington, D.C. Dulles Intl

Wed 12/17

8:20 am-10:33 am

Nonstop5h 13m

$297

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Tue 3/3

1:55 pm-9:20 pm

Nonstop4h 25m

Washington, D.C. Dulles Intl

Wed 3/4

12:40 pm-3:09 pm

Nonstop5h 29m

$297

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Sat 12/13

7:04 pm-6:51 am

1 stop8h 47m

Washington, D.C. Dulles Intl

Wed 12/17

8:20 am-10:33 am

Nonstop5h 13m

$303

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Sun 12/14

11:53 pm-7:12 am

Nonstop4h 19m

Washington, D.C. Dulles Intl

Wed 12/17

8:20 am-10:33 am

Nonstop5h 13m

$315

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Mon 12/15

7:04 pm-6:51 am

1 stop8h 47m

Washington, D.C. Dulles Intl

Wed 12/17

8:20 am-10:33 am

Nonstop5h 13m

$321

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Tue 12/16

1:50 pm-9:10 pm

Nonstop4h 20m

Washington, D.C. Dulles Intl

Wed 12/17

8:20 am-3:06 pm

1 stop9h 46m

$325

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

Showing 1-10 of 22 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 October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
Cheapflightsfares	Price Accuracy2 stars	Trust Score*1 star
CheapTicketsDeal	Price Accuracy3 stars	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.

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

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 December is currently the most expensive (average of $333). 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 44% on the cost of your flight, compared to a flight in the morning.

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

Southwest

8.0

Very good

4,237 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Southwest

8.0

Very good

4,237 reviews

Southwest

8.0

Very good

4,237 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Delta

7.9

Good

7,981 reviews

Southwest

8.0

Very good

4,237 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

United Airlines

7.4

Good

8,991 reviews

Southwest

8.0

Very good

4,237 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Frontier

5.8

Fair

3,128 reviews

Southwest

8.0

Very good

4,237 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 4 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?
Delta and United Airlines can get you from Las Vegas to Washington, D.C. Dulles Intl Airport in just under 7h 16m. Your travel time can differ by up to 11m. 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 $141. Additional round-trip tickets that might be worth considering are offered by Southwest and United Airlines, with the lowest prices starting at $204 and $228, respectively. Users have found that Frontier is 63% 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 United Airlines, with whom users have recently found tickets for as low as $127. However, be on the lookout for offers from Delta and Alaska 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 Austrian Airlines (100%), Brussels Airlines (100%) or Ethiopian Air (98%) 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 $931, our data shows the cheapest flight currently is $121. When looking at the most popular route, (Las Vegas Harry Reid Intl - Washington, D.C. Dulles Intl), you can expect to pay $197 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 December is currently the most expensive (average of $333). 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

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Top 4 airlines flying from Las Vegas to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$141	Average$217	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$204	Average$410	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$228	Average$415	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$256	Average$356	FlexibilityNo cancel fee	On-timeN/A

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$119+ 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 11/7. 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

Find 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 October 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 October 23, 2025.

Cheap flight deals from Las Vegas to Dulles Intl

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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?

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

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 Southwest, Delta, and United Airlines. 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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What are the cheapest airlines flying from Las Vegas to Washington, D.C. Dulles Intl Airport round-trip?

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

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

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What is the cheapest month to book a flight from Las Vegas to Washington, D.C. Dulles Intl Airport?

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Alternative routes for Las Vegas to Dulles Intl

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Top 4 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 October 23, 2025.