Cheap flights from Washington, D.C. to Las Vegas from $185

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 21/1. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LAS
22 Jan — 29 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington, D.C. to Las Vegas

Enter your travel dates to find the best prices.

Cheapest flights from Washington, D.C. to Las Vegas
Explore the most affordable flight options available from Washington, D.C. to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 December 2025.

Wed 31/1209:00IAD - LAS
Nonstop5h 27mUnited Airlines
Wed 31/1200:59LAS - IAD
1 stop7h 29mUnited Airlines
Deal found 21/12$580
Wed 31/1208:20IAD - LAS
1 stop9h 30mUnited Airlines
Wed 31/1223:53LAS - IAD
Nonstop4h 22mUnited Airlines
Deal found 21/12$670
Wed 31/1217:06IAD - LAS
1 stop9h 53mDelta
Wed 7/109:35LAS - IAD
1 stop11h 22mDelta
Deal found 22/12$739
Wed 31/1208:20IAD - LAS
1 stop9h 30mUnited Airlines
Mon 5/123:53LAS - IAD
Nonstop4h 22mUnited Airlines
Deal found 21/12$754
Wed 31/1217:06IAD - LAS
1 stop9h 53mDelta
Mon 5/111:35LAS - IAD
1 stop8h 31mDelta
Deal found 22/12$769
Sun 28/1212:58IAD - LAS
1 stop8h 33mDelta
Mon 2/211:00LAS - IAD
1 stop9h 10mDelta
Deal found 21/12$807

Find flight deals from Washington, D.C. to Las Vegas

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Las Vegas (LAS). 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 23 December 2025.

Round-trip from

$352

One-way from

$185

Popular in

December

Cheapest in

August

Average price

$726

Good round-trip deal

$251 or less
Frontier
  • Frontier
  • 5/2-12/2
  • 2 total stops
  • 16h 16m total
  • Washington, D.C. to Las Vegas
Alaska Airlines
  • Alaska Airlines
  • 21/1
  • 1 total stop
  • 8h 05m total
  • Washington, D.C. to Las Vegas
Highest demand for flights based on searches. 13% potential increase in price ($123 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average return price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Las Vegas Harry Reid Intl.

Cheapflights Fare Finder

 
Customise your flight search to find flights from Washington, D.C. to Las Vegas 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 647,157 searches. Data last updated 23 December 2025.
Use the filters below to find and compare flights from Washington, D.C. to Las Vegas that are best for you.

Fly from

Washington, D.C.

Fly to

Las Vegas

Route

Depart

Return

Price

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 11/2

07:30-15:00

1 stop10h 30m

Las Vegas Harry Reid Intl

Sat 14/2

11:06-23:34

1 stop9h 28m

$369

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 17/2

07:30-15:02

1 stop10h 32m

Las Vegas Harry Reid Intl

Sat 21/2

11:06-23:34

1 stop9h 28m

$369

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 24/1

06:00-15:00

2 stops12h 00m

Las Vegas Harry Reid Intl

Wed 28/1

11:00-23:10

1 stop9h 10m

$376

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 17/3

07:00-14:48

1 stop10h 48m

Las Vegas Harry Reid Intl

Thu 19/3

11:00-23:49

1 stop9h 49m

$429

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 17/1

18:04-09:36

1 stop18h 32m

Las Vegas Harry Reid Intl

Tue 20/1

18:14-17:04

1 stop19h 50m

$431

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 3/2

17:26-22:31

1 stop8h 05m

Las Vegas Harry Reid Intl

Fri 6/2

18:14-16:26

2 stops19h 12m

$438

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 13/1

08:30-10:57

Nonstop5h 27m

Las Vegas Harry Reid Intl

Wed 14/1

23:50-07:13

Nonstop4h 23m

$462

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 14/1

17:26-22:31

1 stop8h 05m

Las Vegas Harry Reid Intl

Sun 18/1

07:00-16:26

1 stop30h 26m

$468

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 7/2

18:04-22:00

1 stop30h 56m

Las Vegas Harry Reid Intl

Mon 9/2

20:13-17:04

2 stops17h 51m

$495

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 20/1

18:04-19:13

1 stop28h 09m

Las Vegas Harry Reid Intl

Sat 24/1

07:05-17:04

2 stops30h 59m

$495

Flights are sorted by cheapest return flights first.

Deals found on 21/12

Showing 1-10 of 24 results
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Best time to book a flight from Washington, D.C. to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Washington, D.C. with our price prediction graph.
Estimated return 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. to Las Vegas

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

Use this chart to determine the optimal time to book a return flight from Washington, D.C. to Las Vegas. Price data was last updated on 19 December 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. to Las Vegas, you should look to book at least 37 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to Las Vegas (average of $149). Flying from Washington, D.C. to Las Vegas in December is currently the most expensive (average of $229). 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 WAS to LAS?

Find hourly flight availability from Washington, D.C. to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 23 December 2025.

When flying from Washington, D.C. to Las Vegas, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Explore weekly flight availability from Washington, D.C. to Las Vegas. 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 23 December 2025.

The most flights from WAS to LAS are scheduled on a Monday (10 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost for a return flight from Washington, D.C. to Las Vegas?

How often are flights from Washington, D.C. to Las Vegas delayed?

About 19% of weekly flights between Washington, D.C. and Las Vegas have experienced delays in the past year, with the average delay time being 168 minutes.

What is the most punctual flight time for Washington, D.C. to Las Vegas flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

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

Over the past year, American Airlines have had the lowest number of delays on this route, with just 7% of flights being delayed.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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.?

    For a flight from Washington, D.C. to Las Vegas, you will be flying into Harry Reid Intl. Las Vegas Harry Reid Intl (LAS) is just 10.0 km from the centre vof the city. Harry Reid Intl is the only Las Vegas airport and it handles 7 inbound flights from Washington, D.C. per day. 0 airlines have flights to Las Vegas Harry Reid Intl from Washington, D.C. on a regular basis.

  • How long is the flight from Washington, D.C. to Las Vegas?

    Delta and Alaska Airlines can get you from Washington, D.C. to Las Vegas in just under 10h 30m. Your travel time can differ by up to 8h 02m. Washington, D.C. and Las Vegas are separated by a distance of 3314 km. This flight may include one or multiple stops.

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

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. to Las Vegas consider choosing ITA Airways(100%), Ethiopian Air(90%) or United Airlines(86%), as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from Washington, D.C. to Las Vegas that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Las Vegas flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Las Vegas?

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

  • Can I find deals for business class flights from Washington, D.C. to Las Vegas?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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. to Las Vegas?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to Las Vegas (average of $149). Flying from Washington, D.C. to Las Vegas in December is currently the most expensive (average of $229). 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

Travelling to a place near Las Vegas?

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By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Las Vegas from Washington, D.C..

Can Cheapflights find flights from Washington, D.C. to Las Vegas with no change fees?

Yes, we can. To see specific flights from Washington, D.C. to Las Vegas with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Washington, D.C. to Las Vegas become cheaper?

Yes! Start tracking prices for Washington, D.C. to Las Vegas flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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