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Cheap flights from Washington, D.C. to Las Vegas from $123

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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LAS
13 Jul — 20 Jul1
1 adult

Cheap 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 8 July 2025.

Round-trip from

$244

One-way from

$123

Popular in

December

Cheapest in

September

Average price

$526

Good round-trip deal

$256 or less
United Airlines
  • United Airlines
  • 9/8-15/8
  • Nonstop
  • 9h 39m total
  • Washington, D.C. to Las Vegas
United Airlines
  • United Airlines
  • 9/8
  • Nonstop
  • 5h 04m total
  • Washington, D.C. to Las Vegas
Highest demand for flights based on searches. 7% potential increase in price ($71 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease ($18 potential savings vs. average return price).
Average for round-trip flights in July 2025
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Las Vegas Harry Reid Intl.

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

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 8 July 2025.

Sat 9/822:10IAD - LAS
Nonstop5h 04mUnited Airlines
Fri 15/823:59LAS - IAD
Nonstop4h 35mUnited Airlines
Deal found 7/7$244
Sun 31/817:52IAD - LAS
1 stop8h 34mAlaska Airlines
Fri 5/917:14LAS - IAD
1 stop20h 38mAlaska Airlines
Deal found 7/7$309
Thu 14/816:30IAD - LAS
1 stop9h 45mSouthwest
Mon 18/806:05LAS - IAD
1 stop6h 40mSouthwest
Deal found 7/7$332
Sat 23/812:39IAD - LAS
1 stop9h 21mDelta
Sat 23/823:00LAS - IAD
1 stop6h 59mDelta
Deal found 6/7$386

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 8 July 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

Sat 9/8

22:10-00:14

Nonstop5h 04m

Las Vegas Harry Reid Intl

Fri 15/8

23:59-07:34

Nonstop4h 35m

$244

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 31/8

17:52-23:26

1 stop8h 34m

Las Vegas Harry Reid Intl

Fri 5/9

17:14-16:52

1 stop20h 38m

$309

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Thu 14/8

16:30-23:15

1 stop9h 45m

Las Vegas Harry Reid Intl

Mon 18/8

06:05-15:45

1 stop6h 40m

$332

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 23/8

12:39-19:00

1 stop9h 21m

Las Vegas Harry Reid Intl

Sat 23/8

23:00-08:59

1 stop6h 59m

$386

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 9/8

22:10-00:14

Nonstop5h 04m

$123

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 11/8

17:25-22:59

1 stop8h 34m

$154

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 21/10

17:42-10:30

1 stop19h 48m

$163

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 6/10

19:45-23:30

1 stop6h 45m

$166

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 4/8

15:37-22:11

1 stop9h 34m

$198

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Thu 20/11

12:50-16:58

1 stop7h 08m

$235

Flights are sorted by cheapest return flights first.

Deals found on 6/7

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 27 June 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 28 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 $978). Flying from Washington, D.C. to Las Vegas in December is currently the most expensive (average of $1,549). 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 8 July 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 8 July 2025.

The most flights from WAS to LAS are scheduled on a Monday (12 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing Las Vegas

Get insights into the airlines that provide service to Las Vegas. 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 Las Vegas. Reviews last updated 8 July 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Las Vegas, such as Alaska Airlines, Southwest, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
8.0
Very Good

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 9 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.

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

    Our cheapest airline available from Washington, D.C. to Las Vegas is United Airlines. Our recent data shows that you can find tickets from as low as $244 on this airline. Additional options worth looking into are Alaska Airlines and Southwest, starting at $309 and $332 round-trip. You may be able to fly from Washington, D.C. to Las Vegas for 57% less than the average price by searching for these airlines.

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

    The cheapet airlines for a one-way flight from Washington, D.C. to Las Vegas are United Airlines ($123), Alaska Airlines ($154), and Southwest ($166).

  • 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 Frontier(75%), Ethiopian Air(72%) or Brussels Airlines(62%), 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 $978). Flying from Washington, D.C. to Las Vegas in December is currently the most expensive (average of $1,549). 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 Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
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Alternative routes for Washington, D.C. to Las Vegas

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Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to Las Vegas?

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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