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Cheap flights from Washington, D.C. to Las Vegas from £74

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LAS
19 Aug — 26 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Washington, D.C. to Las Vegas Harry Reid Intl are usually found in August or September, booked 53 days in advance, depart on a Monday or Tuesday and return on a Monday

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 20 July 2026.

Fri 14/818:00
IAD
-
LAS
Nonstop5h 08m
United Airlines
Mon 17/823:57
LAS
-
IAD
Nonstop4h 33m
United Airlines
Deal found 15/7£133
Fri 14/818:00
IAD
-
LAS
Nonstop5h 08m
United Airlines
Tue 18/808:20
LAS
-
IAD
Nonstop4h 38m
United Airlines
Deal found 15/7£134
Wed 19/808:31
IAD
-
LAS
1 stop7h 36m
United Airlines
Tue 25/813:23
LAS
-
IAD
Nonstop4h 38m
United Airlines
Deal found 18/7£138
Tue 18/809:00
IAD
-
LAS
Nonstop5h 04m
United Airlines
Tue 25/808:20
LAS
-
IAD
Nonstop4h 38m
United Airlines
Deal found 16/7£140
Tue 18/806:10
DCA
-
LAS
1 stop8h 55m
Southwest
Tue 25/809:20
LAS
-
DCA
Nonstop4h 40m
Southwest
Deal found 16/7£140
Thu 13/818:00
IAD
-
LAS
Nonstop5h 08m
United Airlines
Mon 17/823:57
LAS
-
IAD
Nonstop4h 33m
United Airlines
Deal found 16/7£141
Thu 27/816:35
DCA
-
LAS
1 stop8h 00m
Southwest
Sat 29/800:20
LAS
-
DCA
1 stop7h 50m
Southwest
Deal found 16/7£148
Sun 16/808:31
IAD
-
LAS
1 stop7h 44m
United Airlines
Fri 21/823:57
LAS
-
IAD
Nonstop4h 33m
United Airlines
Deal found 18/7£149
Sat 29/809:00
IAD
-
LAS
Nonstop5h 04m
United Airlines
Mon 14/923:57
LAS
-
IAD
Nonstop4h 33m
United Airlines
Deal found 19/7£155
Thu 27/816:55
DCA
-
LAS
2 stops9h 00m
Southwest
Sat 29/807:35
LAS
-
DCA
2 stops10h 05m
Southwest
Deal found 19/7£155
Sun 16/808:31
IAD
-
LAS
1 stop7h 44m
United Airlines
Sat 19/908:20
LAS
-
IAD
Nonstop4h 38m
United Airlines
Deal found 19/7£160
Thu 27/812:55
IAD
-
LAS
Nonstop5h 04m
United Airlines
Sat 29/800:59
LAS
-
IAD
1 stop7h 29m
United Airlines
Deal found 17/7£163

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 20 July 2026.

Round-trip from

£133

One-way from

£74

Popular in

March

Cheapest in

August

Average price

£329
United Airlines
  • United Airlines
  • 14/8-17/8
  • Nonstop
  • 9h 41m total
  • Washington, D.C. to Las Vegas
Search Deals
United Airlines
  • United Airlines
  • 26/8
  • 1 total stop
  • 7h 36m total
  • Washington, D.C. to Las Vegas
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£36 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 858,174 searches. Data last updated 20 July 2026.
Use the filters below to find and compare flights from Washington, D.C. to Las Vegas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Sat 22/8

15:55-20:00

1 stop7h 05m

Las Vegas Harry Reid Intl

Sat 29/8

08:30-20:50

1 stop9h 20m

£148

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Fri 14/8

17:20-21:45

1 stop7h 25m

Las Vegas Harry Reid Intl

Tue 18/8

06:45-16:50

1 stop7h 05m

£148

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Wed 26/8

12:55-16:45

1 stop6h 50m

Las Vegas Harry Reid Intl

Fri 28/8

08:45-19:40

2 stops7h 55m

£152

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 22/8

14:54-21:13

1 stop9h 19m

Las Vegas Harry Reid Intl

Sat 29/8

10:05-19:59

1 stop6h 54m

£191

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Fri 7/8

19:19-00:40

1 stop8h 21m

Las Vegas Harry Reid Intl

Thu 13/8

08:16-18:28

1 stop7h 12m

£191

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Fri 28/8

17:47-23:10

1 stop8h 23m

Las Vegas Harry Reid Intl

Sat 29/8

10:05-19:59

1 stop6h 54m

£191

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Wed 12/8

06:05-10:33

1 stop7h 28m

Las Vegas Harry Reid Intl

Fri 14/8

06:00-18:33

1 stop9h 33m

£191

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Wed 26/8

18:30-23:10

1 stop7h 40m

Las Vegas Harry Reid Intl

Thu 27/8

08:16-19:34

1 stop8h 18m

£191

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Thu 27/8

17:59-23:55

1 stop8h 56m

Las Vegas Harry Reid Intl

Sun 30/8

22:15-08:31

1 stop7h 16m

£191

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Sat 1/8

17:45-21:58

1 stop7h 13m

Las Vegas Harry Reid Intl

Sun 9/8

22:15-08:31

1 stop7h 16m

£192

Flights are sorted by cheapest return flights first.

Deals found on 17/7

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Las Vegas (average of £211). Flying from Washington, D.C. to Las Vegas in March is currently the most expensive (average of £407). 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 20 July 2026.

When flying from Washington, D.C. to Las Vegas, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 56% versus a flight in the morning.

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 20 July 2026.

The most flights from WAS to LAS are scheduled on a Friday (10 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (6 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 18% of weekly flights between Washington, D.C. and Las Vegas have experienced delays in the past year, with the average delay time being 167 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.

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

Booking 52 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to Las Vegas. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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.?

    If you book a flight to Las Vegas from Washington, D.C., you will be flying to Harry Reid Intl, which is the city’s only airport. Las Vegas Harry Reid Intl (LAS) is located 6.2 mi from the center of Las Vegas. There are 8 flights from Washington, D.C. to Harry Reid Intl per day from 0 different airlines.

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

    A quick flight from Washington, D.C. to Las Vegas can take about 5h 08m. United Airlines provides one of the quickest options available for as low as £133. The distance between Washington, D.C. and Las Vegas is about 2059 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Washington, D.C. to Las Vegas?

    The most popular flight routes from Washington, D.C. to Las Vegas are Baltimore/Washington - Las Vegas Harry Reid Intl, Washington, D.C. Reagan-National - Las Vegas Harry Reid Intl and Washington, D.C. Dulles Intl - Las Vegas Harry Reid Intl.

  • 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 Ethiopian Air (92%), United Airlines (87%) or Austrian Airlines (70%) 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, August is the cheapest month in which you can book a flight from Washington, D.C. to Las Vegas (average of £211). Flying from Washington, D.C. to Las Vegas in March is currently the most expensive (average of £407). 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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