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 5h 19m. Fly via United Airlines or Delta to get the fastest option. Airlines will cover a distance of 2059 mi. This flight may include one or multiple stops.

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 $119. Additional round-trip tickets that might be worth considering are offered by Spirit Airlines and Alaska Airlines, with the lowest prices starting at $145 and $231, respectively. These flights start at 70% lower than the current average price 3 months from now.

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

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $103. However, be on the lookout for offers from United Airlines and Hawaiian Airlines, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Las Vegas for a low price.

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 (1 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 $105. While the most popular route (Washington, D.C. Dulles Intl - Las Vegas Harry Reid Intl) can be booked for $168 on average, our data indicates $838 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 United Airlines (76%), Frontier (71%) and Ethiopian Air (71%).

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 August. Prices to Las Vegas from Washington, D.C. Dulles Intl Airport average $362. You can even find prices in August for less than $362, as users have found deals to Las Vegas from as low as $135. 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 4 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.

$89+ Cheap Flights from Washington, D.C. Dulles Intl Airport to Las Vegas

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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 August or July, 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	$154 (Cheapflightsfares)
One-way from	$89 (eDestinos)
Popular in	December
Cheapest in	August
Average price	$397
Good round-trip deal	$263 or less
Good one-way deal	$153 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. 15% potential increase in price ($74 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 September 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 September 15, 2025.

Sat 10/41:02 pmIAD - LAS

1 stop8h 27mFrontier

Fri 10/1012:55 amLAS - IAD

1 stop8h 04mFrontier

Deal found 9/13

$154

Mon 10/2010:04 amIAD - LAS

1 stop8h 52mFrontier

Fri 10/249:05 pmLAS - IAD

1 stop11h 54mFrontier

Deal found 9/15

$156

Mon 10/66:10 amIAD - LAS

1 stop13h 31mFrontier

Fri 10/1012:55 amLAS - IAD

1 stop8h 04mFrontier

Deal found 9/14

$159

Sun 11/25:00 amIAD - LAS

1 stop8h 34mFrontier

Thu 11/612:44 pmLAS - IAD

1 stop8h 27mFrontier

Deal found 9/13

$163

Fri 10/37:14 pmIAD - LAS

1 stop23h 25mFrontier

Fri 10/109:05 pmLAS - IAD

1 stop11h 54mFrontier

Deal found 9/14

$164

Mon 9/291:55 pmIAD - LAS

1 stop10h 28mFrontier

Fri 10/37:00 amLAS - IAD

1 stop13h 39mFrontier

Deal found 9/14

$165

Sun 10/198:02 pmIAD - LAS

1 stop16h 33mFrontier

Thu 10/239:05 pmLAS - IAD

1 stop9h 04mFrontier

Deal found 9/13

$166

Fri 10/37:14 pmIAD - LAS

1 stop23h 25mFrontier

Mon 10/67:00 amLAS - IAD

1 stop13h 16mFrontier

Deal found 9/14

$168

Sat 10/257:59 pmIAD - LAS

Nonstop5h 00mUnited Airlines

Sat 11/17:04 pmLAS - IAD

1 stop8h 44mUnited Airlines

Deal found 9/12

$169

Sat 10/184:22 pmIAD - LAS

1 stop8h 26mFrontier

Fri 10/2412:55 amLAS - IAD

1 stop8h 04mFrontier

Deal found 9/13

$170

Mon 10/204:45 pmIAD - LAS

1 stop8h 03mFrontier

Thu 10/3012:44 pmLAS - IAD

1 stop7h 45mFrontier

Deal found 9/13

$173

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 September 15, 2025.

Fri 11/147:41 pmIAD - LAS

Nonstop5h 19mUnited Airlines

Mon 11/1711:50 pmLAS - IAD

Nonstop4h 19mUnited Airlines

Deal found 9/15

$185

Sun 11/166:00 amIAD - LAS

1 stop7h 15mDelta

Mon 11/1712:43 amLAS - IAD

1 stop7h 51mDelta

Deal found 9/15

$257

Fri 10/246:25 pmIAD - LAS

1 stop8h 00mSouthwest

Wed 10/298:50 amLAS - IAD

2 stops11h 15mSouthwest

Deal found 9/15

$272

Tue 10/146:25 amIAD - LAS

1 stop10h 06mAlaska Airlines

Fri 10/174:49 pmLAS - IAD

1 stop20h 53mAlaska Airlines

Deal found 9/15

$272

Tue 11/49:00 amIAD - LAS

Nonstop5h 25mUnited Airlines

Fri 11/711:50 pmLAS - IAD

Nonstop4h 19mUnited Airlines

Deal found 9/14

$238

Sun 2/11:00 pmIAD - LAS

1 stop10h 28mDelta

Wed 2/47:05 amLAS - IAD

1 stop9h 07mDelta

Deal found 9/15

$257

Thu 12/45:37 pmIAD - LAS

1 stop8h 49mAlaska Airlines

Tue 12/97:25 amLAS - IAD

1 stop7h 05mAlaska Airlines

Deal found 9/14

$277

Mon 11/247:41 pmIAD - LAS

Nonstop5h 19mUnited Airlines

Wed 12/38:30 amLAS - IAD

Nonstop4h 29mUnited Airlines

Deal found 9/15

$263

Fri 12/125:59 pmIAD - LAS

1 stop7h 34mDelta

Tue 12/1611:15 pmLAS - IAD

1 stop6h 58mDelta

Deal found 9/15

$278

Fri 11/289:00 amIAD - LAS

Nonstop5h 25mUnited Airlines

Tue 12/21:50 pmLAS - IAD

Nonstop4h 20mUnited Airlines

Deal found 9/15

$263

Wed 12/312:19 pmIAD - LAS

1 stop10h 16mDelta

Fri 12/512:43 amLAS - IAD

1 stop6h 29mDelta

Deal found 9/15

$278

Fri 11/287:41 pmIAD - LAS

Nonstop5h 19mUnited Airlines

Wed 12/31:50 pmLAS - IAD

Nonstop4h 20mUnited Airlines

Deal found 9/15

$263

Last-minute flights from Dulles Intl to Las Vegas
Discover last-minute flight deals from Dulles Intl to Las Vegas. Data last updated September 15, 2025 and is based on user searches.

Mon 9/291:55 pmIAD - LAS

1 stop10h 28mFrontier

Fri 10/37:00 amLAS - IAD

1 stop13h 39mFrontier

Deal found 9/14

$165

Fri 10/37:14 pmIAD - LAS

1 stop23h 25mFrontier

Fri 10/109:05 pmLAS - IAD

1 stop11h 54mFrontier

Deal found 9/14

$164

Fri 10/37:14 pmIAD - LAS

1 stop23h 25mFrontier

Mon 10/67:00 amLAS - IAD

1 stop13h 16mFrontier

Deal found 9/13

$168

Sat 10/41:02 pmIAD - LAS

1 stop8h 27mFrontier

Fri 10/1012:55 amLAS - IAD

1 stop8h 04mFrontier

Deal found 9/13

$154

Mon 10/61:55 pmIAD - LAS

1 stop10h 28mFrontier

Fri 10/1012:55 amLAS - IAD

1 stop8h 04mFrontier

Deal found 9/13

$159

Sat 10/184:22 pmIAD - LAS

1 stop8h 26mFrontier

Fri 10/2412:55 amLAS - IAD

1 stop8h 04mFrontier

Deal found 9/13

$170

Sun 10/198:02 pmIAD - LAS

1 stop16h 33mFrontier

Thu 10/239:05 pmLAS - IAD

1 stop9h 04mFrontier

Deal found 9/13

$166

Mon 10/2010:04 amIAD - LAS

1 stop8h 52mFrontier

Fri 10/249:05 pmLAS - IAD

1 stop11h 54mFrontier

Deal found 9/15

$156

Mon 10/204:45 pmIAD - LAS

1 stop8h 03mFrontier

Thu 10/3012:44 pmLAS - IAD

1 stop7h 45mFrontier

Deal found 9/14

$173

Sat 10/257:59 pmIAD - LAS

Nonstop5h 00mUnited Airlines

Sat 11/18:45 amLAS - IAD

Nonstop4h 28mUnited Airlines

Deal found 9/12

$163

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 September 15, 2025.

Sat 10/41:02 pmIAD - LAS

1 stop8h 27mFrontier

Deal found 9/14

$89

Sat 12/66:00 amIAD - LAS

1 stop18h 30mFrontier

Deal found 9/14

$90

Sun 11/25:00 amIAD - LAS

1 stop8h 34mFrontier

Deal found 9/13

$92

Sun 10/510:17 amIAD - LAS

1 stop16h 33mFrontier

Deal found 9/14

$93

Mon 10/67:14 pmIAD - LAS

1 stop17h 13mFrontier

Deal found 9/13

$94

Mon 9/298:59 pmIAD - LAS

2 stops17h 41mMultiple Airlines

Deal found 9/13

$95

Sat 10/184:22 pmIAD - LAS

1 stop8h 26mFrontier

Deal found 9/13

$97

Sat 9/201:02 pmIAD - LAS

1 stop8h 27mFrontier

Deal found 9/13

$98

Sat 12/136:00 amIAD - LAS

1 stop18h 30mFrontier

Deal found 9/13

$99

Fri 12/55:37 pmIAD - LAS

1 stop8h 49mAlaska Airlines

Deal found 9/12

$102

Mon 9/291:55 pmIAD - LAS

1 stop10h 28mFrontier

Deal found 9/13

$103

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

Fri 11/14

7:41 pm-10:00 pm

Nonstop5h 19m

Las Vegas Harry Reid Intl

Mon 11/17

11:50 pm-7:09 am

Nonstop4h 19m

$185

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 11/4

9:00 am-11:25 am

Nonstop5h 25m

Las Vegas Harry Reid Intl

Fri 11/7

11:50 pm-7:09 am

Nonstop4h 19m

$238

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 11/16

6:00 am-10:15 am

1 stop7h 15m

Las Vegas Harry Reid Intl

Mon 11/17

12:43 am-11:34 am

1 stop7h 51m

$257

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 2/1

1:00 pm-8:28 pm

1 stop10h 28m

Las Vegas Harry Reid Intl

Wed 2/4

7:05 am-7:12 pm

1 stop9h 07m

$257

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 11/24

7:41 pm-10:00 pm

Nonstop5h 19m

Las Vegas Harry Reid Intl

Wed 12/3

8:30 am-3:59 pm

Nonstop4h 29m

$263

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Fri 11/28

9:00 am-11:25 am

Nonstop5h 25m

Las Vegas Harry Reid Intl

Tue 12/2

1:50 pm-9:10 pm

Nonstop4h 20m

$263

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Fri 11/28

7:41 pm-10:00 pm

Nonstop5h 19m

Las Vegas Harry Reid Intl

Wed 12/3

1:50 pm-9:10 pm

Nonstop4h 20m

$263

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Fri 10/24

6:25 pm-11:25 pm

1 stop8h 00m

Las Vegas Harry Reid Intl

Wed 10/29

8:50 am-11:05 pm

2 stops11h 15m

$272

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 10/14

6:25 am-1:31 pm

1 stop10h 06m

Las Vegas Harry Reid Intl

Fri 10/17

4:49 pm-4:42 pm

1 stop20h 53m

$272

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Thu 12/4

5:37 pm-11:26 pm

1 stop8h 49m

Las Vegas Harry Reid Intl

Tue 12/9

7:25 am-5:30 pm

1 stop7h 05m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 24 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 41% 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. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

4,242 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

4,242 reviews

Southwest

8.0

Very good

4,242 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

7,954 reviews

Southwest

8.0

Very good

4,242 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

8,929 reviews

Southwest

8.0

Very good

4,242 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

4,242 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

3,172 reviews

Southwest

8.0

Very good

4,242 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 4 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 5h 19m. Fly via United Airlines or Delta to get the fastest option. Airlines will cover a distance of 2059 mi. This flight may include one or multiple stops.
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 $119. Additional round-trip tickets that might be worth considering are offered by Spirit Airlines and Alaska Airlines, with the lowest prices starting at $145 and $231, respectively. These flights start at 70% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Las Vegas one-way?
The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $103. However, be on the lookout for offers from United Airlines and Hawaiian Airlines, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Las Vegas for a low price.
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 United Airlines (76%), Frontier (71%) and Ethiopian Air (71%).
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 $105. While the most popular route (Washington, D.C. Dulles Intl - Las Vegas Harry Reid Intl) can be booked for $168 on average, our data indicates $838 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$119	Average$201	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$145	Average$289	FlexibilityNo cancel fee	On-time65%
Alaska Airlines	Cheapest$231	Average$307	FlexibilityNo cancel fee	On-time75%
Sun Country Air	Cheapest$242	Average$370	FlexibilityNo cancel fee	On-time83%
United Airlines	Cheapest$250	Average$460	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$256	Average$469	FlexibilityNo cancel fee	On-time63%
Delta	Cheapest$256	Average$362	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$368	Average$514	FlexibilityNo cancel fee	On-time71%

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$89+ 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 August or July, 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 September 15, 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 September 15, 2025.

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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.

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

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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 September 15, 2025.