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

There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Las Vegas in 4h 59m. Fly via United Airlines to get the fastest option. Airlines will cover a distance of 2059 mi. All flights are typically nonstop.

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

Flying on Frontier is currently your cheapest option to Las Vegas, with prices starting at $120. Additional round-trip tickets that might be worth considering are offered by Spirit Airlines and Alaska Airlines, with the lowest prices starting at $159 and $233, respectively. These flights start at 70% lower than the current average price 3 months from now.

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

The most flights from IAD to LAS are scheduled on a Monday (6 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

In terms of precipitation, rainfall in Las Vegas ranges from 0.1 - 0.8 inches per month. February is typically the wettest month, when rainfall can reach 0.8 in. May is typically the driest time to visit Las Vegas when rainfall is around 0.1 in.

If weather is an important factor for your trip to Las Vegas, 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 93.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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

Looking at all options, your cheapest flight can be booked for $70. While the most popular route (Washington, D.C. Dulles Intl - Las Vegas Harry Reid Intl) can be booked for $165 on average our data indicates $867 when flying from Washington, D.C. Dulles Intl Airport to Las Vegas.

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

The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Las Vegas are Brussels Airlines (78%), Frontier (77%) and Ethiopian Air (72%).

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

Consider American Airlines, Alaska Airlines or Delta when booking your flight. These represent the most popular airlines when flying from Washington, D.C. Dulles Intl Airport to Las Vegas.

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

It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

The best pricing can be found in the month of July. Prices to Las Vegas from Washington, D.C. Dulles Intl Airport average $364. You can even find prices in July for less than $364, as users have found deals to Las Vegas from as low as $150. The month of December appears to be one of the more expensive times to travel to Las Vegas from Washington, D.C. Dulles Intl Airport. Flying in the targeted month can save you up to 23%.

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

Las Vegas Harry Reid Intl (LAS), located 6.2 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Las Vegas. 8 airlines have flights to Harry Reid Intl from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Las Vegas Harry Reid Intl should not be difficult; the airport handles an average of 5 inbound flights from Washington, D.C. Dulles Intl per day.

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

Yes. In addition to deals on Dulles Intl to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.

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

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Las Vegas.

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

Yes. Cheapflights offers flight deals from Dulles Intl to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$78+ Cheap Flights from Washington, D.C. Dulles Intl Airport to Las Vegas

Q: How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Las Vegas?

Airfare is below average for this route at the moment. Washington, D.C. Dulles Intl Airport to Las Vegas flights typically cost between $232 and $486 in September. The cheapest round-trip price found within the last 3 days was $156 on Frontier (Sep 6-Sep 12).

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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 Washington, D.C. Dulles Intl to Las Vegas Harry Reid Intl are usually found in July or August, booked 20 days in advance, depart on a Tuesday or Saturday and return on a Thursday

Cheap flight deals from Dulles Intl to Las Vegas

Round-trip from	$156 (Mytrip)
One-way from	$78 (CheapOair)
Popular in	December
Cheapest in	July
Average price	$259
Good round-trip deal	$193 or less
Good one-way deal	$118 or less

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

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One-way flight from Washington, D.C. Dulles Intl to Las Vegas Harry Reid Intl

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($79 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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

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

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Find flight deals from Dulles Intl to Las Vegas

Cheapest flights from Dulles Intl to Las Vegas
Explore the most affordable flight options available from Dulles Intl to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2025.

Sat 9/61:02 pmIAD - LAS

1 stop13h 48mFrontier

Fri 9/1212:55 amLAS - IAD

1 stop8h 07mFrontier

Deal found 8/21

$156

Sat 9/201:02 pmIAD - LAS

1 stop8h 27mFrontier

Thu 9/2511:00 pmLAS - IAD

1 stop10h 55mFrontier

Deal found 8/20

$160

Sun 11/25:00 amIAD - LAS

1 stop8h 34mFrontier

Thu 11/612:44 pmLAS - IAD

1 stop8h 27mFrontier

Deal found 8/21

$165

Sat 9/131:02 pmIAD - LAS

1 stop13h 48mFrontier

Fri 9/1911:04 pmLAS - IAD

1 stop16h 20mFrontier

Deal found 8/21

$166

Sat 9/201:02 pmIAD - LAS

1 stop8h 27mFrontier

Wed 9/2411:04 pmLAS - IAD

1 stop16h 20mFrontier

Deal found 8/21

$167

Mon 9/86:10 amIAD - LAS

1 stop13h 31mFrontier

Thu 9/1111:04 pmLAS - IAD

1 stop16h 15mFrontier

Deal found 8/21

$170

Sun 9/141:55 pmIAD - LAS

1 stop10h 28mFrontier

Fri 9/1911:04 pmLAS - IAD

1 stop16h 20mFrontier

Deal found 8/20

$173

Fri 9/197:14 pmIAD - LAS

1 stop23h 25mFrontier

Fri 9/2611:04 pmLAS - IAD

1 stop16h 20mFrontier

Deal found 8/20

$176

Fri 9/510:17 amIAD - LAS

1 stop16h 33mFrontier

Mon 9/811:00 pmLAS - IAD

1 stop17h 55mFrontier

Deal found 8/19

$177

Mon 9/18:00 amIAD - LAS

Nonstop4h 59mFrontier

Thu 9/411:00 pmLAS - IAD

1 stop10h 55mFrontier

Deal found 8/20

$178

Sat 10/41:02 pmIAD - LAS

1 stop8h 27mFrontier

Fri 10/1012:55 amLAS - IAD

1 stop8h 04mFrontier

Deal found 8/19

$182

Best flights from Dulles Intl to Las Vegas
Discover carefully curated flight deals from Dulles Intl to Las Vegas that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2025.

Sat 9/207:59 pmIAD - LAS

Nonstop4h 59mUnited Airlines

Tue 9/2310:45 pmLAS - IAD

Nonstop4h 35mUnited Airlines

Deal found 8/19

$207

Mon 12/85:37 pmIAD - LAS

1 stop8h 49mAlaska Airlines

Wed 12/102:57 pmLAS - IAD

1 stop23h 33mAlaska Airlines

Deal found 8/20

$216

Sat 11/15:40 pmIAD - LAS

1 stop7h 46mHawaiian Airlines

Wed 11/57:25 amLAS - IAD

1 stop6h 48mHawaiian Airlines

Deal found 8/19

$226

Mon 11/37:41 pmIAD - LAS

Nonstop5h 19mUnited Airlines

Sat 11/88:45 amLAS - IAD

Nonstop4h 28mUnited Airlines

Deal found 8/19

$207

Sat 9/275:52 pmIAD - LAS

1 stop19h 01mAlaska Airlines

Tue 9/305:14 pmLAS - IAD

1 stop20h 38mAlaska Airlines

Deal found 8/19

$226

Sat 10/47:59 pmIAD - LAS

Nonstop5h 00mUnited Airlines

Tue 10/711:20 pmLAS - IAD

Nonstop4h 35mUnited Airlines

Deal found 8/18

$207

Mon 11/105:40 pmIAD - LAS

1 stop8h 53mAlaska Airlines

Wed 11/197:25 amLAS - IAD

1 stop6h 48mAlaska Airlines

Deal found 8/20

$226

Fri 11/147:41 pmIAD - LAS

Nonstop5h 19mUnited Airlines

Tue 11/1811:50 pmLAS - IAD

Nonstop4h 19mUnited Airlines

Deal found 8/18

$207

Sat 11/15:40 pmIAD - LAS

1 stop7h 46mAlaska Airlines

Tue 11/45:40 pmLAS - IAD

1 stop20h 33mAlaska Airlines

Deal found 8/19

$226

Sat 10/47:59 pmIAD - LAS

Nonstop5h 00mUnited Airlines

Wed 10/811:20 pmLAS - IAD

Nonstop4h 35mUnited Airlines

Deal found 8/18

$207

Mon 11/105:40 pmIAD - LAS

1 stop8h 53mAlaska Airlines

Fri 11/147:25 amLAS - IAD

1 stop6h 48mAlaska Airlines

Deal found 8/20

$226

Mon 11/105:40 pmIAD - LAS

1 stop8h 53mAlaska Airlines

Thu 11/136:00 amLAS - IAD

1 stop8h 13mAlaska Airlines

Deal found 8/20

$226

Last-minute flights from Dulles Intl to Las Vegas
Discover last-minute flight deals from Dulles Intl to Las Vegas. Data last updated August 21, 2025 and is based on user searches.

Sat 8/308:00 amIAD - LAS

Nonstop4h 59mFrontier

Fri 9/512:55 amLAS - IAD

1 stop8h 07mFrontier

Deal found 8/18

$145

Mon 9/18:00 amIAD - LAS

Nonstop4h 59mFrontier

Thu 9/411:00 pmLAS - IAD

1 stop10h 55mFrontier

Deal found 8/19

$178

Mon 9/18:00 amIAD - LAS

Nonstop4h 59mFrontier

Wed 9/1011:04 pmLAS - IAD

1 stop16h 20mFrontier

Deal found 8/19

$183

Fri 9/510:17 amIAD - LAS

1 stop16h 33mFrontier

Mon 9/811:00 pmLAS - IAD

1 stop17h 55mFrontier

Deal found 8/19

$177

Sat 9/61:02 pmIAD - LAS

1 stop8h 27mFrontier

Fri 9/1212:55 amLAS - IAD

1 stop8h 07mFrontier

Deal found 8/21

$156

Sun 9/71:55 pmIAD - LAS

1 stop10h 28mFrontier

Fri 9/1212:55 amLAS - IAD

1 stop8h 07mFrontier

Deal found 8/19

$160

Sat 9/131:02 pmIAD - LAS

1 stop13h 48mFrontier

Fri 9/1911:04 pmLAS - IAD

1 stop16h 20mFrontier

Deal found 8/19

$166

Sun 9/141:55 pmIAD - LAS

1 stop10h 28mFrontier

Fri 9/1911:04 pmLAS - IAD

1 stop16h 20mFrontier

Deal found 8/20

$173

Mon 9/151:55 pmIAD - LAS

1 stop10h 28mFrontier

Thu 9/1811:00 pmLAS - IAD

1 stop10h 55mFrontier

Deal found 8/21

$165

Mon 9/151:55 pmIAD - LAS

1 stop10h 28mFrontier

Fri 9/1911:04 pmLAS - IAD

1 stop16h 20mFrontier

Deal found 8/21

$170

Fri 9/197:14 pmIAD - LAS

1 stop23h 25mFrontier

Fri 9/2611:04 pmLAS - IAD

1 stop16h 20mFrontier

Deal found 8/20

$176

One-way flights from Dulles Intl to Las Vegas
Search for one-way flight options from Dulles Intl to Las Vegas. Find affordable one-way fares based on user searches. Data last updated August 21, 2025.

Sat 10/41:02 pmIAD - LAS

1 stop8h 27mFrontier

Deal found 8/19

$78

Fri 10/31:55 pmIAD - LAS

1 stop10h 20mFrontier

Deal found 8/18

$79

Sat 9/131:02 pmIAD - LAS

1 stop13h 48mFrontier

Deal found 8/19

$84

Sat 9/201:02 pmIAD - LAS

1 stop8h 27mFrontier

Deal found 8/19

$85

Sat 10/114:22 pmIAD - LAS

1 stop8h 26mFrontier

Deal found 8/20

$86

Tue 8/269:30 amIAD - LAS

1 stop9h 22mFrontier

Deal found 8/19

$87

Sun 10/51:55 pmIAD - LAS

1 stop10h 28mFrontier

Deal found 8/19

$88

Fri 9/2610:17 amIAD - LAS

1 stop16h 33mFrontier

Deal found 8/19

$91

Thu 9/257:14 pmIAD - LAS

1 stop16h 56mFrontier

Deal found 8/19

$94

Thu 11/136:00 amIAD - LAS

1 stop18h 28mFrontier

Deal found 8/19

$95

Sat 10/184:22 pmIAD - LAS

1 stop8h 26mFrontier

Deal found 8/19

$97

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 9/20

7:59 pm-9:58 pm

Nonstop4h 59m

Las Vegas Harry Reid Intl

Tue 9/23

10:45 pm-6:20 am

Nonstop4h 35m

$207

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 11/3

7:41 pm-10:00 pm

Nonstop5h 19m

Las Vegas Harry Reid Intl

Sat 11/8

8:45 am-4:13 pm

Nonstop4h 28m

$207

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 10/4

7:59 pm-9:59 pm

Nonstop5h 00m

Las Vegas Harry Reid Intl

Tue 10/7

11:20 pm-6:55 am

Nonstop4h 35m

$207

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Fri 11/14

7:41 pm-10:00 pm

Nonstop5h 19m

Las Vegas Harry Reid Intl

Tue 11/18

11:50 pm-7:09 am

Nonstop4h 19m

$207

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 10/4

7:59 pm-9:59 pm

Nonstop5h 00m

Las Vegas Harry Reid Intl

Wed 10/8

11:20 pm-6:55 am

Nonstop4h 35m

$207

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 12/8

5:37 pm-11:26 pm

1 stop8h 49m

Las Vegas Harry Reid Intl

Wed 12/10

2:57 pm-5:30 pm

1 stop23h 33m

$216

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 11/1

5:40 pm-10:26 pm

1 stop7h 46m

Las Vegas Harry Reid Intl

Wed 11/5

7:25 am-5:13 pm

1 stop6h 48m

$226

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 9/27

5:52 pm-9:53 am

1 stop19h 01m

Las Vegas Harry Reid Intl

Tue 9/30

5:14 pm-4:52 pm

1 stop20h 38m

$226

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 11/10

5:40 pm-11:33 pm

1 stop8h 53m

Las Vegas Harry Reid Intl

Wed 11/19

7:25 am-5:13 pm

1 stop6h 48m

$226

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 11/1

5:40 pm-10:26 pm

1 stop7h 46m

Las Vegas Harry Reid Intl

Tue 11/4

5:40 pm-5:13 pm

1 stop20h 33m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 21 results

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

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

Airports

IAD

Expect long security queues at IAD, especially in the afternoon. Plan extra time to navigate the terminals efficiently.

LAS

For a quick exit from LAS, rideshares are available but pick up in the parking garage, which can be a long walk in summer.

Our travel experts

Ramsey Qubein

Expert on IAD and LAS

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

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Las Vegas

Prices

Airlines

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

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Las Vegas may vary depending on when you book. For the best chance of a lower fare, look to book 20 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Las Vegas (average of $198). Flying from Washington, D.C. Dulles Intl Airport to Las Vegas in March is currently the most expensive (average of $269). 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 IAD to LAS?

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Las Vegas is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 36% on airfare.

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

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

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Las Vegas?

Reviews of airlines servicing Las Vegas

Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Washington, D.C. Dulles Intl Airport to Las Vegas to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,245 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

4,245 reviews

Southwest

8.0

Very good

4,245 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

8.0

Very good

7,981 reviews

Southwest

8.0

Very good

4,245 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

8,930 reviews

Southwest

8.0

Very good

4,245 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

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,245 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

3,207 reviews

Southwest

8.0

Very good

4,245 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 into for flights to Las Vegas from Washington, D.C. Dulles Intl?
Las Vegas Harry Reid Intl (LAS), located 6.2 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Las Vegas. 8 airlines have flights to Harry Reid Intl from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Las Vegas Harry Reid Intl should not be difficult; the airport handles an average of 5 inbound flights from Washington, D.C. Dulles Intl per day.
How long is the flight from Washington, D.C. Dulles Intl Airport to Las Vegas?
There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Las Vegas in 4h 59m. Fly via United Airlines to get the fastest option. Airlines will cover a distance of 2059 mi. All flights are typically nonstop.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Las Vegas round-trip?
Flying on Frontier is currently your cheapest option to Las Vegas, with prices starting at $120. Additional round-trip tickets that might be worth considering are offered by Spirit Airlines and Alaska Airlines, with the lowest prices starting at $159 and $233, respectively. These flights start at 70% lower than the current average price 3 months from now.
What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Las Vegas?
The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Las Vegas are Brussels Airlines (78%), Frontier (77%) and Ethiopian Air (72%).
What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Las Vegas?
Looking at all options, your cheapest flight can be booked for $70. While the most popular route (Washington, D.C. Dulles Intl - Las Vegas Harry Reid Intl) can be booked for $165 on average our data indicates $867 when flying from Washington, D.C. Dulles Intl Airport to Las Vegas.
Can I find deals for flights from Dulles Intl to Las Vegas that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Las Vegas?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Las Vegas.
Can I find deals for business class flights from Dulles Intl to Las Vegas?
Yes. Cheapflights offers flight deals from Dulles Intl to Las Vegas 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 Washington, D.C. Dulles Intl Airport to Las Vegas?
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Las Vegas (average of $198). Flying from Washington, D.C. Dulles Intl Airport to Las Vegas in March is currently the most expensive (average of $269). 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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Other flights to Las Vegas

Top 8 airlines flying from Dulles Intl to Las Vegas

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$120	Average$200	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$159	Average$291	FlexibilityNo cancel fee	On-time65%
Alaska Airlines	Cheapest$233	Average$309	FlexibilityNo cancel fee	On-time75%
Sun Country Air	Cheapest$242	Average$370	FlexibilityNo cancel fee	On-time83%
United Airlines	Cheapest$254	Average$465	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$256	Average$484	FlexibilityNo cancel fee	On-time63%
Delta	Cheapest$256	Average$336	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$368	Average$526	FlexibilityNo cancel fee	On-time71%

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$78+ Cheap flights from Dulles Intl (IAD) to Las Vegas (LAS)

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 10/4. 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 Washington, D.C. Dulles Intl to Las Vegas Harry Reid Intl are usually found in July or August, booked 20 days in advance, depart on a Tuesday or Saturday and return on a Thursday

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Cheapest flights from Dulles Intl to Las VegasExplore the most affordable flight options available from Dulles Intl to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2025.

Explore the most affordable flight options available from Dulles Intl to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2025.

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

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

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Dulles Intl with our price prediction graph.

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Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Las Vegas

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

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Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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Cheapest flights from Dulles Intl to Las Vegas
Explore the most affordable flight options available from Dulles Intl to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2025.