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 $177. Additional round-trip tickets that might be worth considering are offered by United Airlines and Alaska Airlines, with the lowest prices starting at $221 and $237, respectively. Users have found that Frontier is 60% 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 Alaska Airlines, with whom users have recently found tickets for as low as $98. However, be on the lookout for offers from United Airlines and Frontier, 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 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 $99. When looking at the most popular route, (Las Vegas Harry Reid Intl - Washington, D.C. Dulles Intl), you can expect to pay $200 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 United Airlines (87%), Brussels Airlines (85%) or Austrian Airlines (82%) 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 American Airlines, Delta and Frontier. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Las Vegas to Washington, D.C. Dulles Intl Airport?

Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 47% when planning your travel around this day of the week.

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

Flights from Las Vegas to Washington, D.C. Dulles Intl Airport lean towards being more expensive in July. Prices are generally better when you fly from Las Vegas to Washington, D.C. Dulles Intl Airport in August, with the cheapest ticket starting at $159.

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 2 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 5 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.

$98+ Flights from Las Vegas to Washington, D.C. Dulles Intl Airport

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1. Tell us where you want to go

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

2. Select your favorite providers

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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 April or May, booked 85 days in advance, depart on a Thursday or Saturday and return on a Tuesday

Cheap flight deals from Las Vegas to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$177 (Cheapflightsfares)
One-way from	$98 (Alaska Airlines)
Popular in	October
Cheapest in	April
Average price	$413
Good round-trip deal	$306 or less
Good one-way deal	$145 or less

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

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Provider most trusted by Cheapflights users for Las Vegas Harry Reid Intl-Washington, D.C. Dulles Intl flights.

Search Deals

From Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl

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 ($27 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).

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Average for round-trip flights in March 2025

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

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

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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 March 28, 2025.

Thu 5/1511:00 pmLAS - IAD

Nonstop4h 31mFrontier

Tue 5/207:45 amIAD - LAS

Nonstop5h 15mFrontier

Deal found 3/27

$177

Thu 5/810:08 amLAS - IAD

1 stop11h 15mMultiple Airlines

Sun 5/117:31 amIAD - LAS

Nonstop5h 15mMultiple Airlines

Deal found 3/27

$206

Thu 4/247:00 amLAS - IAD

Nonstop4h 33mUnited Airlines

Thu 5/15:55 pmIAD - LAS

Nonstop5h 19mUnited Airlines

Deal found 3/27

$221

Tue 4/225:34 pmLAS - IAD

1 stop11h 09mAlaska Airlines

Wed 4/305:00 pmIAD - LAS

1 stop8h 24mAlaska Airlines

Deal found 3/27

$237

Thu 4/2410:08 amLAS - IAD

1 stop11h 15mHawaiian Airlines

Mon 4/286:30 amIAD - LAS

1 stop10h 41mHawaiian Airlines

Deal found 3/27

$240

Fri 5/2312:54 amLAS - IAD

1 stop9h 32mDelta

Mon 5/265:40 pmIAD - LAS

1 stop9h 31mDelta

Deal found 3/27

$283

Sat 5/175:55 amLAS - IAD

1 stop6h 20mSouthwest

Wed 5/217:50 amIAD - LAS

2 stops12h 15mSouthwest

Deal found 3/27

$310

Thu 7/1712:59 amLAS - IAD

1 stop7h 00mAmerican Airlines

Sun 7/206:44 pmIAD - LAS

1 stop8h 03mAmerican Airlines

Deal found 3/27

$369

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 March 28, 2025.

Thu 5/1511:00 pmLAS - IAD

Nonstop4h 31mFrontier

Tue 5/207:45 amIAD - LAS

Nonstop5h 15mFrontier

Deal found 3/27

$177

Thu 5/810:08 amLAS - IAD

1 stop11h 15mMultiple Airlines

Sun 5/117:31 amIAD - LAS

Nonstop5h 15mMultiple Airlines

Deal found 3/27

$206

Thu 4/247:00 amLAS - IAD

Nonstop4h 33mUnited Airlines

Thu 5/15:55 pmIAD - LAS

Nonstop5h 19mUnited Airlines

Deal found 3/27

$221

Tue 4/225:34 pmLAS - IAD

1 stop11h 09mAlaska Airlines

Wed 4/305:00 pmIAD - LAS

1 stop8h 24mAlaska Airlines

Deal found 3/27

$237

Thu 4/2410:08 amLAS - IAD

1 stop11h 15mHawaiian Airlines

Mon 4/286:30 amIAD - LAS

1 stop10h 41mHawaiian Airlines

Deal found 3/27

$240

Fri 5/2312:54 amLAS - IAD

1 stop9h 32mDelta

Mon 5/265:40 pmIAD - LAS

1 stop9h 31mDelta

Deal found 3/27

$283

Sat 5/175:55 amLAS - IAD

1 stop6h 20mSouthwest

Wed 5/217:50 amIAD - LAS

2 stops12h 15mSouthwest

Deal found 3/27

$310

Thu 7/1712:59 amLAS - IAD

1 stop7h 00mAmerican Airlines

Sun 7/206:44 pmIAD - LAS

1 stop8h 03mAmerican Airlines

Deal found 3/27

$369

Last-minute flights from Las Vegas to Dulles Intl
Discover last-minute flight deals from Las Vegas to Dulles Intl. Data last updated March 28, 2025 and is based on user searches.

Wed 4/211:49 pmLAS - IAD

1 stop8h 06mFrontier

Sat 4/512:48 pmIAD - LAS

1 stop12h 55mFrontier

Deal found 3/27

$380

Wed 4/211:49 pmLAS - IAD

1 stop8h 06mMultiple Airlines

Tue 4/157:31 amIAD - LAS

1 stop10h 46mMultiple Airlines

Deal found 3/27

$389

Wed 4/212:40 amLAS - IAD

1 stop9h 11mDelta

Tue 4/1511:50 amIAD - LAS

1 stop7h 34mDelta

Deal found 3/27

$429

Wed 4/212:59 amLAS - IAD

2 stops9h 23mAmerican Airlines

Tue 4/152:12 pmIAD - LAS

1 stop10h 07mAmerican Airlines

Deal found 3/27

$434

Thu 4/36:15 amLAS - IAD

1 stop8h 07mAlaska Airlines

Mon 4/77:31 amIAD - LAS

1 stop10h 46mAlaska Airlines

Deal found 3/28

$277

Thu 4/31:15 pmLAS - IAD

Nonstop4h 36mUnited Airlines

Mon 4/143:50 pmIAD - LAS

Nonstop5h 17mUnited Airlines

Deal found 3/27

$409

Thu 4/39:58 amLAS - IAD

1 stop23h 36mSun Country Air

Mon 4/76:35 amIAD - LAS

1 stop19h 21mSun Country Air

Deal found 3/27

$440

Thu 4/311:45 amLAS - IAD

2 stops10h 00mSouthwest

Mon 4/145:35 pmIAD - LAS

1 stop7h 50mSouthwest

Deal found 3/27

$484

Mon 4/1412:59 amLAS - IAD

2 stops9h 43mAmerican Airlines

Wed 4/162:12 pmIAD - LAS

1 stop10h 07mAmerican Airlines

Deal found 3/27

$374

Wed 4/166:35 pmLAS - IAD

1 stop14h 02mSun Country Air

Mon 4/2111:37 amIAD - LAS

1 stop9h 11mSun Country Air

Deal found 3/27

$280

Wed 4/166:15 amLAS - IAD

1 stop8h 40mSouthwest

Fri 4/182:10 pmIAD - LAS

2 stops8h 55mSouthwest

Deal found 3/27

$344

Tue 4/225:34 pmLAS - IAD

1 stop11h 09mAlaska Airlines

Wed 4/305:00 pmIAD - LAS

1 stop8h 24mAlaska Airlines

Deal found 3/27

$237

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 March 28, 2025.

Tue 5/66:38 amLAS - IAD

1 stop7h 44mAlaska Airlines

Deal found 3/27

$98

Wed 5/2110:45 pmLAS - IAD

Nonstop4h 25mUnited Airlines

Deal found 3/27

$109

Sat 6/2811:02 pmLAS - IAD

Nonstop4h 28mFrontier

Deal found 3/27

$112

Fri 5/97:14 pmLAS - IAD

1 stop9h 29mHawaiian Airlines

Deal found 3/28

$120

Thu 5/111:15 amLAS - IAD

1 stop8h 25mSouthwest

Deal found 3/27

$121

Wed 4/96:40 pmLAS - IAD

1 stop13h 17mSun Country Air

Deal found 3/27

$140

Tue 5/2011:59 pmLAS - IAD

1 stop6h 01mDelta

Deal found 3/27

$150

Mon 4/2810:37 pmLAS - IAD

2 stops9h 49mMultiple Airlines

Deal found 3/27

$168

Wed 6/258:15 amLAS - IAD

2 stops21h 16mAllegiant Air

Deal found 3/27

$173

Mon 5/1212:59 amLAS - IAD

2 stops9h 23mAmerican Airlines

Deal found 3/28

$190

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

Thu 5/15

11:00 pm-6:31 am

Nonstop4h 31m

Washington, D.C. Dulles Intl

Tue 5/20

7:45 am-10:00 am

Nonstop5h 15m

$177

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 5/8

10:08 am-12:23 am

1 stop11h 15m

Washington, D.C. Dulles Intl

Sun 5/11

7:31 am-9:46 am

Nonstop5h 15m

$206

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 4/24

7:00 am-2:33 pm

Nonstop4h 33m

Washington, D.C. Dulles Intl

Thu 5/1

5:55 pm-8:14 pm

Nonstop5h 19m

$221

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Tue 4/22

5:34 pm-7:43 am

1 stop11h 09m

Washington, D.C. Dulles Intl

Wed 4/30

5:00 pm-10:24 pm

1 stop8h 24m

$237

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 4/24

10:08 am-12:23 am

1 stop11h 15m

Washington, D.C. Dulles Intl

Mon 4/28

6:30 am-2:11 pm

1 stop10h 41m

$240

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Fri 5/23

12:54 am-1:26 pm

1 stop9h 32m

Washington, D.C. Dulles Intl

Mon 5/26

5:40 pm-12:11 am

1 stop9h 31m

$283

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Sat 5/17

5:55 am-3:15 pm

1 stop6h 20m

Washington, D.C. Dulles Intl

Wed 5/21

7:50 am-5:05 pm

2 stops12h 15m

$310

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 7/17

12:59 am-10:59 am

1 stop7h 00m

Washington, D.C. Dulles Intl

Sun 7/20

6:44 pm-11:47 pm

1 stop8h 03m

$369

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Tue 5/6

6:38 am-5:22 pm

1 stop7h 44m

$98

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 5/21

10:45 pm-6:10 am

Nonstop4h 25m

$109

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 18 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 March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
CheapTicketsDeal	Price Accuracy3 stars	Trust Score*3 stars
Kiwi.com	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 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.

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

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

IAD

Use the Washington Metro Silver line for a cost-effective and quick 40-minute ride to D.C. from IAD, with a station just five minutes from the terminal.

Our travel experts

Ramsey Qubein

Expert on IAD and LAS

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

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

Booking 85 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 $309). Flying from Las Vegas to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $385). 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 46% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Las Vegas to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Las Vegas to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Dulles Intl by month

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.

Temperature in Dulles Intl by month

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).

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Las Vegas to Washington, D.C.. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

8.1

Very good

4,274 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Alaska Airlines

8.0

Very good

9,797 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta

8.0

Very good

7,898 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Hawaiian Airlines

7.9

Good

2,336 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines

7.4

Good

8,604 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 2 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 5 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.
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 $177. Additional round-trip tickets that might be worth considering are offered by United Airlines and Alaska Airlines, with the lowest prices starting at $221 and $237, respectively. Users have found that Frontier is 60% 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 Alaska Airlines, with whom users have recently found tickets for as low as $98. However, be on the lookout for offers from United Airlines and Frontier, 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 United Airlines (87%), Brussels Airlines (85%) or Austrian Airlines (82%) 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 $99. When looking at the most popular route, (Las Vegas Harry Reid Intl - Washington, D.C. Dulles Intl), you can expect to pay $200 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 $309). Flying from Las Vegas to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $385). 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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Tysons

Springfield

Rockville

Woodbridge

Gaithersburg

Fredericksburg

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Silver Spring

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Laurel

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National Harbor

Oxon Hill

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Las Vegas to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$153	Average$218	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$287	Average$320	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$290	Average$465	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$332	Average$426	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$368	Average$452	FlexibilityNo cancel fee	On-time71%

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$98+ 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 5/6. 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 April or May, booked 85 days in advance, depart on a Thursday or Saturday and return on a Tuesday

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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 March 28, 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 March 28, 2025.

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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 March.

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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IAD

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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

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?

Use this chart to determine the optimal time to book a round-trip flight from Las Vegas to Dulles Intl. Price data was last updated on March 21, 2025.

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?

Find hourly flight availability from Las Vegas to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

What is the cheapest day to fly from Las Vegas to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Las Vegas to Dulles Intl. Price data was last updated on March 23, 2025.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Las Vegas to Washington, D.C.. Users can see the overall rating for each airline as well as how each is rated in terms of 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?

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

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

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?

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

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

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

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 5 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 March 28, 2025.