Cheap flights from Washington, D.C. to Las Vegas from $174

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Las Vegas departing on 6/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
19:32 - 21:52IAD-LAS
5h 20mdirect
United Airlines Logo
13:50 - 21:10LAS-IAD
4h 20mdirect
$346United Airlines
Find Deal
Thu, 11 Dec - Mon, 15 Dec
United Airlines Logo
19:32 - 21:52IAD-LAS
5h 20mdirect
United Airlines Logo
19:04 - 06:51LAS-IAD
8h 47m1 stop
$355United Airlines
Find Deal
Thu, 11 Dec - Sat, 13 Dec
United Airlines Logo
19:32 - 21:52IAD-LAS
5h 20mdirect
United Airlines Logo
10:47 - 21:22LAS-IAD
7h 35m1 stop
$362United Airlines
Find Deal
Sun, 7 Dec - Wed, 10 Dec
Southwest Logo
07:00 - 11:10IAD-LAS
7h 10m1 stop
Southwest Logo
06:00 - 16:50LAS-IAD
7h 50m1 stop
$369Southwest
Find Deal
Sat, 17 Jan - Tue, 20 Jan
United Airlines Logo
16:11 - 20:32IAD-LAS
7h 21m1 stop
United Airlines Logo
00:59 - 11:23LAS-IAD
7h 24m1 stop
$377United Airlines
Find Deal
Mon, 19 Jan - Wed, 21 Jan
Delta Logo
19:35 - 00:27IAD-LAS
7h 52m1 stop
Delta Logo
11:47 - 23:08LAS-IAD
8h 21m1 stop
$395Delta
Find Deal
Wed, 10 Dec - Sat, 13 Dec
Delta Logo
07:01 - 13:44IAD-LAS
9h 43m1 stop
Delta Logo
00:44 - 11:35LAS-IAD
7h 51m1 stop
$420Delta
Find Deal
Wed, 3 Dec - Wed, 3 Dec
Southwest Logo
09:05 - 16:35IAD-LAS
10h 30m2 stops
Southwest Logo
06:00 - 16:50LAS-IAD
7h 50m1 stop
$437Southwest
Find Deal
Wed, 14 Jan - Sun, 18 Jan
Alaska Airlines Logo
17:26 - 22:31IAD-LAS
8h 05m1 stop
Alaska Airlines Logo
06:00 - 17:25LAS-IAD
8h 25m1 stop
$439Alaska Airlines
Find Deal
Wed, 11 Feb - Sat, 14 Feb
Alaska Airlines Logo
17:26 - 22:31IAD-LAS
8h 05m1 stop
Alaska Airlines Logo
06:00 - 17:04LAS-IAD
8h 04m1 stop
$449Alaska Airlines
Find Deal
Tue, 27 Jan - Sun, 1 Feb

United Airlines flights from Washington, D.C. to Las Vegas

Our best United Airlines deals on Washington, D.C. to Las Vegas flight tickets
United Airlines
11 Dec
IAD19:32Washington, D.C. Dulles Intl
5h 20m
LAS21:52Las Vegas Harry Reid Intl
15 Dec
LAS13:50Las Vegas Harry Reid Intl
4h 20m
IAD21:10Washington, D.C. Dulles Intl
United Airlines
11 Dec
IAD19:32Washington, D.C. Dulles Intl
5h 20m
LAS21:52Las Vegas Harry Reid Intl
13 Dec
LAS19:04Las Vegas Harry Reid Intl
8h 47m
1 stop
IAD06:51Washington, D.C. Dulles Intl
United Airlines
7 Dec
IAD19:32Washington, D.C. Dulles Intl
5h 20m
LAS21:52Las Vegas Harry Reid Intl
8 Dec
LAS00:59Las Vegas Harry Reid Intl
7h 24m
1 stop
IAD11:23Washington, D.C. Dulles Intl

Delta flights from Washington, D.C. to Las Vegas

Our best Delta deals on Washington, D.C. to Las Vegas flight tickets
Delta
10 Dec
IAD19:35Washington, D.C. Dulles Intl
7h 52m
1 stop
LAS00:27Las Vegas Harry Reid Intl
13 Dec
LAS11:47Las Vegas Harry Reid Intl
8h 21m
1 stop
IAD23:08Washington, D.C. Dulles Intl
Delta
3 Dec
IAD07:01Washington, D.C. Dulles Intl
9h 43m
1 stop
LAS13:44Las Vegas Harry Reid Intl
3 Dec
LAS00:44Las Vegas Harry Reid Intl
7h 51m
1 stop
IAD11:35Washington, D.C. Dulles Intl
Delta
31 Dec
IAD16:17Washington, D.C. Dulles Intl
7h 39m
1 stop
LAS20:56Las Vegas Harry Reid Intl
5 Jan
LAS13:10Las Vegas Harry Reid Intl
7h 27m
1 stop
IAD23:37Washington, D.C. Dulles Intl

momondo 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, momondo users made 78,305 searches. Data last updated 7 November 2025.
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

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Thu 11/12

19:32-21:52

Nonstop5h 20m

Las Vegas Harry Reid Intl

Mon 15/12

13:50-21:10

Nonstop4h 20m

$346

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Thu 11/12

19:32-21:52

Nonstop5h 20m

Las Vegas Harry Reid Intl

Sat 13/12

19:04-06:51

1 stop8h 47m

$355

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 7/12

19:32-21:52

Nonstop5h 20m

Las Vegas Harry Reid Intl

Wed 10/12

10:47-21:22

1 stop7h 35m

$362

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 17/1

07:00-11:10

1 stop7h 10m

Las Vegas Harry Reid Intl

Tue 20/1

06:00-16:50

1 stop7h 50m

$369

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 19/1

16:11-20:32

1 stop7h 21m

Las Vegas Harry Reid Intl

Wed 21/1

00:59-11:23

1 stop7h 24m

$377

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 10/12

19:35-00:27

1 stop7h 52m

Las Vegas Harry Reid Intl

Sat 13/12

11:47-23:08

1 stop8h 21m

$395

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 3/12

07:01-13:44

1 stop9h 43m

Las Vegas Harry Reid Intl

Wed 3/12

00:44-11:35

1 stop7h 51m

$420

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 14/1

09:05-16:35

2 stops10h 30m

Las Vegas Harry Reid Intl

Sun 18/1

06:00-16:50

1 stop7h 50m

$437

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 11/2

17:26-22:31

1 stop8h 05m

Las Vegas Harry Reid Intl

Sat 14/2

06:00-17:25

1 stop8h 25m

$439

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 27/1

17:26-22:31

1 stop8h 05m

Las Vegas Harry Reid Intl

Sun 1/2

06:00-17:04

1 stop8h 04m

$449

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Las Vegas from

How to get the cheapest flight ticket from Washington, D.C. to Las Vegas

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. and Las Vegas?

What is the cheapest month to fly to Las Vegas?

The cheapest month to fly to Las Vegas from Washington, D.C. is in August. Flight prices, which tend to average around $414, are often lower during this time because this is during the off-season. If you aren’t able to travel to Las Vegas during the month of August, then flying in July is also cheap. Prices for this month can be found on momondo for an average of $429.

What is the cheapest Washington, D.C. to Las Vegas Harry Reid Intl flight route?

Fly from Washington, D.C. Reagan-National to Las Vegas Harry Reid Intl for the best Washington, D.C. - Las Vegas Harry Reid Intl flight prices

How far in advance should I book a flight to Las Vegas?

You are more likely to see cheaper flights to Las Vegas from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $616 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from Washington, D.C. for as low as $488 on momondo.

What cabin class options are available on Washington, D.C. to Las Vegas Harry Reid Intl flights?

There are 2 cabin classes available to choose from on Washington, D.C. to Las Vegas Harry Reid Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Washington, D.C. to Las Vegas flight prices changed over time?

As of November 2025, prices for Washington, D.C. to Las Vegas flights are approximately 17% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. to Las Vegas

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Las Vegas according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Washington, D.C. to Las Vegas (WAS to LAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Las Vegas

Best price found

$256

Fastest flight time

5h 00m

Direct flights

Every day

Airports in Las Vegas

1 airport
The best flight deal from Washington, D.C. to Las Vegas found on momondo in the last 72 hours is $256
The fastest flight from Washington, D.C. to Las Vegas takes 5h 00m
Direct flights go from Washington, D.C. to Las Vegas every day.
There is 1 airport near Las Vegas: Las Vegas Harry Reid Intl (LAS)
  • How far is Washington, D.C. to Las Vegas Harry Reid Intl by plane?

    Las Vegas Harry Reid Intl is 3346.4 km away from Washington, D.C.. 5h 13m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Washington, D.C. to Las Vegas Harry Reid Intl Airport?

    Prices for flights from Washington, D.C. to Las Vegas Harry Reid Intl Airport were last updated today.

  • How old do you have to be to fly from Washington, D.C. to Las Vegas Harry Reid Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Las Vegas Harry Reid Intl Airport.

  • What documentation or ID do you need to fly to Las Vegas Harry Reid Intl Airport?

    The travel and health documents you'll need for your trip to Las Vegas Harry Reid Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Las Vegas Harry Reid Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. to Las Vegas?

Travelling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Furnace Creek
Primm

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Las Vegas?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Las Vegas for you.

Can I find flights from Washington, D.C. to Las Vegas with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington, D.C. to Las Vegas flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Las Vegas?

momondo helps you find the best flight between Washington, D.C. and Las Vegas by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington, D.C. to Las Vegas right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Las Vegas from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Sun 7/12
Sun 14/12

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