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Dulles Intl

$90+ 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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — IAD
Dec 28 — Jan 41
Sat 12/28
Sat 1/4
1 adult, Economy
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The best prices from Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl are usually found in March or August, booked 89 days in advance, depart on a Wednesday or Friday and return on a Tuesday

Cheap flight deals from Las Vegas to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Las Vegas (LAS) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 23, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$218
(Booking.com)

One-way from

$90
(Frontier)

Popular in

February

Cheapest in

March

Average price

$513
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.
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From Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl
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One-way flight from Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl
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High demand for flights, 3% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in December 2024
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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 December 23, 2024.

This Delta deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/316:00 amLAS - IAD
1 stop6h 50mDelta
Sun 1/56:57 pmIAD - LAS
1 stop8h 34mDelta
Deal found 12/22$423
This American Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2911:31 pmLAS - IAD
1 stop6h 18mAmerican Airlines
Sun 1/55:00 amIAD - LAS
1 stop9h 22mAmerican Airlines
Deal found 12/22$458
This United Airlines deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3111:30 pmLAS - IAD
Nonstop4h 27mUnited Airlines
Sat 1/47:37 pmIAD - LAS
Nonstop5h 23mUnited Airlines
Deal found 12/23$459
This Southwest deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3112:55 pmLAS - IAD
1 stop7h 05mSouthwest
Sun 1/55:15 amIAD - LAS
2 stops8h 50mSouthwest
Deal found 12/22$523
This Cheapflightsfares deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2911:25 pmLAS - IAD
1 stop28h 50mFrontier
Sun 1/58:40 amIAD - LAS
1 stop16h 25mFrontier
Deal found 12/23$786
This Alaska Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/296:00 amLAS - IAD
2 stops12h 30mAlaska Airlines
Sun 1/55:24 pmIAD - LAS
2 stops19h 28mAlaska Airlines
Deal found 12/22$844

Find flights from Las Vegas to Dulles Intl within your budget

Customize your flight search to find flights from Las Vegas to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Sat 2/8

11:00 pm-10:44 am

1 stop8h 44m

Washington, D.C. Dulles Intl

Mon 2/10

6:05 pm-9:50 pm

1 stop30h 45m

$223

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Tue 1/7

11:00 pm-12:12 pm

1 stop10h 12m

Washington, D.C. Dulles Intl

Sat 1/11

5:25 pm-10:19 pm

1 stop7h 54m

$259

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 2/5

11:30 pm-6:57 am

Nonstop4h 27m

Washington, D.C. Dulles Intl

Sat 2/8

12:40 pm-3:03 pm

Nonstop5h 23m

$277

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Sat 1/25

6:00 am-3:53 pm

1 stop6h 53m

Washington, D.C. Dulles Intl

Sat 2/1

7:17 am-1:40 pm

1 stop9h 23m

$296

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Tue 4/29

6:00 am-4:00 pm

1 stop7h 00m

Washington, D.C. Dulles Intl

Sat 5/31

4:15 pm-10:15 pm

1 stop9h 00m

$308

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 1/8

5:00 am-4:14 pm

1 stop8h 14m

Washington, D.C. Dulles Intl

Wed 1/15

1:52 pm-9:09 pm

2 stops10h 17m

$373

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Tue 1/7

11:20 am-11:05 pm

2 stops8h 45m

Washington, D.C. Dulles Intl

Sat 1/11

3:00 pm-7:55 pm

1 stop7h 55m

$411

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Tue 2/4

11:00 pm-12:14 pm

1 stop10h 14m

$90

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Tue 1/14

8:40 am-4:07 pm

Nonstop4h 27m

$139

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 4/9

6:40 pm-10:57 am

1 stop13h 17m

$140

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 16 results
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust 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.

Travel insights for flights from Las Vegas to Dulles Intl

Get recent, data-driven insights about flights from Las Vegas to Dulles Intl including ideal travel times, pricing trends, and more.

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 December 20, 2024.

Booking 76 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 $389). 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?

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 December 23, 2024.

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 12% on the cost of your flight, compared to a flight in the morning.

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

Explore weekly flight availability from Las Vegas to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 23, 2024.

The most flights from LAS to IAD are scheduled on a Monday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Dulles Intl by month

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

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

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated December 23, 2024.
Read reviews from past customers who have flown Frontier, Delta and American Airlines 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
4,780 reviews

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,780 reviews
Southwest
8.1
Very good
4,780 reviews

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,549 reviews
Southwest
8.1
Very good
4,780 reviews

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,588 reviews
Southwest
8.1
Very good
4,780 reviews

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,022 reviews
Southwest
8.1
Very good
4,780 reviews

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Allegiant Air
7.4
Good
822 reviews
Southwest
8.1
Very good
4,780 reviews

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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?

    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 3 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 $218. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at $277 and $296, respectively. Users have found that Frontier is 52% 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 $90. However, be on the lookout for offers from United Airlines and Sun Country Air, 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 (89%), Austrian Airlines (87%) or Brussels Airlines (87%) 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 $587, our data shows the cheapest flight currently is $145. When looking at the most popular route, (Las Vegas Harry Reid Intl - Washington, D.C. Dulles Intl), you can expect to pay $227 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 $389). 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 5 airlines flying from Las Vegas to Dulles Intl

Discover the top 5 airlines that operate flights from Las Vegas to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$145Average$297FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$204Average$406FlexibilityNo cancel feeOn-time71%
DeltaCheapest$287Average$322FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$297Average$477FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$328Average$543FlexibilityNo cancel feeOn-time63%
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