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Cheap flights from Washington, D.C. to Las Vegas from $170

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 19/5. 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
14:37 - 20:48
IAD
-
LAS
9h 11m
1 stop
United Airlines Logo
08:10 - 15:49
LAS
-
IAD
4h 39mdirect
$361United Airlines
Sat, 9 May - Tue, 12 May
United Airlines Logo
17:45 - 20:22
IAD
-
LAS
5h 37mdirect
United Airlines Logo
08:04 - 15:31
LAS
-
IAD
4h 27mdirect
$381United Airlines
Wed, 4 Mar - Wed, 11 Mar
United Airlines Logo
09:00 - 11:21
IAD
-
LAS
5h 21mdirect
United Airlines Logo
19:04 - 06:37
LAS
-
IAD
8h 33m
1 stop
$389United Airlines
Wed, 22 Apr - Mon, 27 Apr
United Airlines Logo
14:12 - 19:57
IAD
-
LAS
8h 45m
1 stop
United Airlines Logo
23:43 - 07:10
LAS
-
IAD
4h 27mdirect
$395United Airlines
Tue, 10 Mar - Mon, 16 Mar
Alaska Airlines Logo
07:05 - 20:14
IAD
-
LAS
16h 09m
2 stops
Alaska Airlines Logo
18:58 - 17:27
LAS
-
IAD
19h 29m
1 stop
$399Alaska Airlines
Wed, 4 Mar - Tue, 10 Mar
United Airlines Logo
20:03 - 22:11
IAD
-
LAS
5h 08mdirect
United Airlines Logo
18:15 - 05:27
LAS
-
IAD
8h 12m
1 stop
$405United Airlines
Sat, 13 Jun - Sat, 20 Jun
Alaska Airlines Logo
07:05 - 20:14
IAD
-
LAS
16h 09m
2 stops
Alaska Airlines Logo
06:00 - 17:27
LAS
-
IAD
8h 27m
1 stop
$406Alaska Airlines
Wed, 25 Feb - Tue, 3 Mar
Alaska Airlines Logo
07:05 - 15:11
IAD
-
LAS
11h 06m
1 stop
Alaska Airlines Logo
18:58 - 17:27
LAS
-
IAD
19h 29m
1 stop
$409Alaska Airlines
Tue, 24 Feb - Tue, 24 Feb
Alaska Airlines Logo
18:20 - 19:14
IAD
-
LAS
27h 54m
1 stop
Alaska Airlines Logo
06:00 - 17:27
LAS
-
IAD
8h 27m
1 stop
$413Alaska Airlines
Sat, 7 Mar - Wed, 11 Mar
United Airlines Logo
19:50 - 22:13
IAD
-
LAS
5h 23mdirect
United Airlines Logo
23:45 - 07:21
LAS
-
IAD
4h 36mdirect
$416United Airlines
Sat, 11 Apr - Thu, 16 Apr

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
9 May
IAD14:37Washington, D.C. Dulles Intl
9h 11m
1 stop
LAS20:48Las Vegas Harry Reid Intl
12 May
LAS08:10Las Vegas Harry Reid Intl
4h 39m
IAD15:49Washington, D.C. Dulles Intl
$361
United Airlines
4 Mar
IAD17:45Washington, D.C. Dulles Intl
5h 37m
LAS20:22Las Vegas Harry Reid Intl
11 Mar
LAS08:04Las Vegas Harry Reid Intl
4h 27m
IAD15:31Washington, D.C. Dulles Intl
$381
United Airlines
22 Apr
IAD09:00Washington, D.C. Dulles Intl
5h 21m
LAS11:21Las Vegas Harry Reid Intl
27 Apr
LAS19:04Las Vegas Harry Reid Intl
8h 33m
1 stop
IAD06:37Washington, D.C. Dulles Intl
$389

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

Our best Alaska Airlines deals on Washington, D.C. to Las Vegas flight tickets
Alaska Airlines
4 Mar
IAD07:05Washington, D.C. Dulles Intl
16h 09m
2 stops
LAS20:14Las Vegas Harry Reid Intl
10 Mar
LAS18:58Las Vegas Harry Reid Intl
19h 29m
1 stop
IAD17:27Washington, D.C. Dulles Intl
$399
Alaska Airlines
25 Feb
IAD07:05Washington, D.C. Dulles Intl
16h 09m
2 stops
LAS20:14Las Vegas Harry Reid Intl
3 Mar
LAS06:00Las Vegas Harry Reid Intl
8h 27m
1 stop
IAD17:27Washington, D.C. Dulles Intl
$406
Alaska Airlines
24 Feb
IAD07:05Washington, D.C. Dulles Intl
9h 20m
1 stop
LAS13:25Las Vegas Harry Reid Intl
3 Mar
LAS06:00Las Vegas Harry Reid Intl
8h 27m
1 stop
IAD17:27Washington, D.C. Dulles Intl
$409

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 5 February 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

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 9/5

14:37-20:48

1 stop9h 11m

Las Vegas Harry Reid Intl

Tue 12/5

08:10-15:49

Nonstop4h 39m

$361

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 4/3

17:45-20:22

Nonstop5h 37m

Las Vegas Harry Reid Intl

Wed 11/3

08:04-15:31

Nonstop4h 27m

$381

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 22/4

09:00-11:21

Nonstop5h 21m

Las Vegas Harry Reid Intl

Mon 27/4

19:04-06:37

1 stop8h 33m

$389

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 10/3

14:12-19:57

1 stop8h 45m

Las Vegas Harry Reid Intl

Mon 16/3

23:43-07:10

Nonstop4h 27m

$395

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 4/3

07:05-20:14

2 stops16h 09m

Las Vegas Harry Reid Intl

Tue 10/3

18:58-17:27

1 stop19h 29m

$399

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 13/6

20:03-22:11

Nonstop5h 08m

Las Vegas Harry Reid Intl

Sat 20/6

18:15-05:27

1 stop8h 12m

$405

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 25/2

07:05-20:14

2 stops16h 09m

Las Vegas Harry Reid Intl

Tue 3/3

06:00-17:27

1 stop8h 27m

$406

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 24/2

07:05-15:11

1 stop11h 06m

Las Vegas Harry Reid Intl

Tue 24/2

18:58-17:27

1 stop19h 29m

$409

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 7/3

18:20-19:14

1 stop27h 54m

Las Vegas Harry Reid Intl

Wed 11/3

06:00-17:27

1 stop8h 27m

$413

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 11/4

19:50-22:13

Nonstop5h 23m

Las Vegas Harry Reid Intl

Thu 16/4

23:45-07:21

Nonstop4h 36m

$416

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 $384, 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 $398.

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 $564 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 $458 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.

Can stopping save me money on Washington, D.C. to Las Vegas flights?

You could potentially save up to 54% on your flight if you consider stops on a Washington, D.C. to Las Vegas flight.

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

As of February 2026, prices for Washington, D.C. to Las Vegas flights are approximately 23% 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

$237

Fastest flight time

18h 31m

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 $237
The fastest flight from Washington, D.C. to Las Vegas takes 18h 31m
Direct flights go from Washington, D.C. to Las Vegas every day.
There is 1 airport in Las Vegas. From Washington, D.C. there are direct flights to 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.. 18h 31m 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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