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Cheap flights from Washington, D.C. to Las Vegas from $152

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 6/12. 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

United Airlines Logo
19:59 - 21:59IAD-LAS
5h 00mdirect
United Airlines Logo
23:20 - 06:55LAS-IAD
4h 35mdirect
$319United Airlines
Find Deal
Sat, 4 Oct - Sat, 11 Oct
Hawaiian Airlines Logo
17:37 - 22:27IAD-LAS
7h 50m1 stop
Hawaiian Airlines Logo
06:00 - 17:30LAS-IAD
8h 30m1 stop
$333Hawaiian Airlines
Find Deal
Tue, 9 Dec - Thu, 11 Dec
United Airlines Logo
12:35 - 14:58IAD-LAS
5h 23mdirect
United Airlines Logo
23:53 - 07:12LAS-IAD
4h 19mdirect
$334United Airlines
Find Deal
Sat, 6 Dec - Thu, 11 Dec
Alaska Airlines Logo
17:40 - 22:26IAD-LAS
7h 46m1 stop
Alaska Airlines Logo
17:40 - 17:13LAS-IAD
20h 33m1 stop
$348Alaska Airlines
Find Deal
Sat, 1 Nov - Tue, 4 Nov
United Airlines Logo
19:59 - 21:58IAD-LAS
4h 59mdirect
United Airlines Logo
23:20 - 06:55LAS-IAD
4h 35mdirect
$349United Airlines
Find Deal
Wed, 17 Sep - Fri, 26 Sep
Alaska Airlines Logo
17:37 - 22:27IAD-LAS
7h 50m1 stop
Alaska Airlines Logo
14:57 - 17:30LAS-IAD
23h 33m1 stop
$363Alaska Airlines
Find Deal
Sat, 6 Dec - Wed, 10 Dec
Delta Logo
15:31 - 20:20IAD-LAS
7h 49m1 stop
Delta Logo
23:53 - 09:09LAS-IAD
6h 16m1 stop
$396Delta
Find Deal
Tue, 23 Sep - Wed, 24 Sep
Delta Logo
17:25 - 22:28IAD-LAS
8h 03m1 stop
Delta Logo
23:30 - 11:56LAS-IAD
9h 26m1 stop
$403Delta
Find Deal
Sat, 20 Sep - Mon, 29 Sep
Southwest Logo
05:40 - 11:45IAD-LAS
9h 05m2 stops
Southwest Logo
05:45 - 16:10LAS-IAD
7h 25m1 stop
$419Southwest
Find Deal
Fri, 31 Oct - Sun, 2 Nov
Southwest Logo
16:40 - 21:05IAD-LAS
7h 25m1 stop
Southwest Logo
05:50 - 15:15LAS-IAD
6h 25m1 stop
$433Southwest
Find Deal
Wed, 5 Nov - Sat, 8 Nov

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
4 Oct
IAD19:59Washington, D.C. Dulles Intl
5h 00m
LAS21:59Las Vegas Harry Reid Intl
11 Oct
LAS23:20Las Vegas Harry Reid Intl
4h 35m
IAD06:55Washington, D.C. Dulles Intl
$319
Find similar
United Airlines
6 Dec
IAD12:35Washington, D.C. Dulles Intl
5h 23m
LAS14:58Las Vegas Harry Reid Intl
11 Dec
LAS23:53Las Vegas Harry Reid Intl
4h 19m
IAD07:12Washington, D.C. Dulles Intl
$334
Find similar
United Airlines
17 Sept
IAD19:59Washington, D.C. Dulles Intl
4h 59m
LAS21:58Las Vegas Harry Reid Intl
26 Sept
LAS23:20Las Vegas Harry Reid Intl
4h 35m
IAD06:55Washington, D.C. Dulles Intl
$349
Find similar

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

Our best Southwest deals on Washington, D.C. to Las Vegas flight tickets
Southwest
31 Oct
IAD05:40Washington, D.C. Dulles Intl
9h 05m
2 stops
LAS11:45Las Vegas Harry Reid Intl
2 Nov
LAS05:45Las Vegas Harry Reid Intl
7h 25m
1 stop
IAD16:10Washington, D.C. Dulles Intl
$419
Find similar
Southwest
5 Nov
IAD16:40Washington, D.C. Dulles Intl
7h 25m
1 stop
LAS21:05Las Vegas Harry Reid Intl
8 Nov
LAS05:50Las Vegas Harry Reid Intl
6h 25m
1 stop
IAD15:15Washington, D.C. Dulles Intl
$433
Find similar
Southwest
2 Nov
IAD05:05Washington, D.C. Dulles Intl
10h 55m
2 stops
LAS13:00Las Vegas Harry Reid Intl
8 Nov
LAS05:50Las Vegas Harry Reid Intl
6h 25m
1 stop
IAD15:15Washington, D.C. Dulles Intl
$440
Find similar

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 25 August 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

Sat 4/10

19:59-21:59

Nonstop5h 00m

Las Vegas Harry Reid Intl

Sat 11/10

23:20-06:55

Nonstop4h 35m

$319

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 9/12

17:37-22:27

1 stop7h 50m

Las Vegas Harry Reid Intl

Thu 11/12

06:00-17:30

1 stop8h 30m

$333

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 6/12

12:35-14:58

Nonstop5h 23m

Las Vegas Harry Reid Intl

Thu 11/12

23:53-07:12

Nonstop4h 19m

$334

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 1/11

17:40-22:26

1 stop7h 46m

Las Vegas Harry Reid Intl

Tue 4/11

17:40-17:13

1 stop20h 33m

$348

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 17/9

19:59-21:58

Nonstop4h 59m

Las Vegas Harry Reid Intl

Fri 26/9

23:20-06:55

Nonstop4h 35m

$349

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 6/12

17:37-22:27

1 stop7h 50m

Las Vegas Harry Reid Intl

Wed 10/12

14:57-17:30

1 stop23h 33m

$363

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 23/9

15:31-20:20

1 stop7h 49m

Las Vegas Harry Reid Intl

Wed 24/9

23:53-09:09

1 stop6h 16m

$396

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 20/9

17:25-22:28

1 stop8h 03m

Las Vegas Harry Reid Intl

Mon 29/9

23:30-11:56

1 stop9h 26m

$403

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Fri 31/10

05:40-11:45

2 stops9h 05m

Las Vegas Harry Reid Intl

Sun 2/11

05:45-16:10

1 stop7h 25m

$419

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 5/11

16:40-21:05

1 stop7h 25m

Las Vegas Harry Reid Intl

Sat 8/11

05:50-15:15

1 stop6h 25m

$433

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 cheapest month to fly to Las Vegas?

The cheapest month to fly to Las Vegas from Washington, D.C. is in July. Flight prices, which tend to average around $428, 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 July, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $446.

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

Fly from Baltimore/Washington 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 $622 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 $497 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 August 2025, prices for Washington, D.C. to Las Vegas flights are approximately 28% cheaper 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

4h 59m

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 4h 59m
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)
Search flight deals

  • 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.. 4h 59m 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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