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Cheap flights from Washington, D.C. Dulles Intl Airport to Las Vegas from $127

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. Dulles Intl Airport to Las Vegas departing on 27/8. 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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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Las Vegas (IAD-LAS)

Cheap return flights

United Airlines Logo
09:00 - 11:03IAD-LAS
5h 03mdirect
United Airlines Logo
22:45 - 06:20LAS-IAD
4h 35mdirect
$253United Airlines
Find Deal
Wed, 10 Sep - Sat, 13 Sep
United Airlines Logo
12:35 - 14:35IAD-LAS
5h 00mdirect
United Airlines Logo
19:05 - 06:39LAS-IAD
8h 34m1 stop
$262United Airlines
Find Deal
Mon, 29 Sep - Thu, 2 Oct
United Airlines Logo
19:59 - 21:58IAD-LAS
4h 59mdirect
United Airlines Logo
22:45 - 06:20LAS-IAD
4h 35mdirect
$265United Airlines
Find Deal
Sun, 14 Sep - Sat, 20 Sep
United Airlines Logo
19:59 - 21:58IAD-LAS
4h 59mdirect
United Airlines Logo
18:49 - 07:19LAS-IAD
9h 30m1 stop
$274United Airlines
Find Deal
Sun, 14 Sep - Wed, 17 Sep
Southwest Logo
18:05 - 21:40IAD-LAS
6h 35m1 stop
Southwest Logo
05:40 - 16:20LAS-IAD
7h 40m1 stop
$282Southwest
Find Deal
Wed, 24 Sep - Sat, 27 Sep
Southwest Logo
17:50 - 22:35IAD-LAS
7h 45m1 stop
Southwest Logo
22:10 - 13:10LAS-IAD
12h 00m1 stop
$291Southwest
Find Deal
Mon, 10 Nov - Thu, 13 Nov
Hawaiian Airlines Logo
17:40 - 23:33IAD-LAS
8h 53m1 stop
Hawaiian Airlines Logo
07:25 - 17:13LAS-IAD
6h 48m1 stop
$307Hawaiian Airlines
Find Deal
Mon, 10 Nov - Fri, 14 Nov
Alaska Airlines Logo
17:52 - 23:26IAD-LAS
8h 34m1 stop
Alaska Airlines Logo
17:14 - 16:52LAS-IAD
20h 38m1 stop
$308Alaska Airlines
Find Deal
Mon, 8 Sep - Thu, 11 Sep
Alaska Airlines Logo
17:52 - 09:37IAD-LAS
18h 45m1 stop
Alaska Airlines Logo
19:47 - 16:52LAS-IAD
18h 05m1 stop
$313Alaska Airlines
Find Deal
Tue, 26 Aug - Thu, 11 Sep
Hawaiian Airlines Logo
17:52 - 23:26IAD-LAS
8h 34m1 stop
Hawaiian Airlines Logo
10:20 - 00:23LAS-IAD
11h 03m1 stop
$349Hawaiian Airlines
Find Deal
Mon, 15 Sep - Wed, 17 Sep

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

Our best Alaska Airlines deals on Washington, D.C. Dulles Intl Airport to Las Vegas flight tickets
Alaska Airlines
8 Sept
IAD17:52Washington, D.C. Dulles Intl
8h 34m
1 stop
LAS23:26Las Vegas Harry Reid Intl
11 Sept
LAS17:14Las Vegas Harry Reid Intl
20h 38m
1 stop
IAD16:52Washington, D.C. Dulles Intl
$308
Find similar
Alaska Airlines
26 Aug
IAD17:52Washington, D.C. Dulles Intl
18h 45m
1 stop
LAS09:37Las Vegas Harry Reid Intl
11 Sept
LAS19:47Las Vegas Harry Reid Intl
18h 05m
1 stop
IAD16:52Washington, D.C. Dulles Intl
$313
Find similar
Alaska Airlines
30 Aug
IAD17:52Washington, D.C. Dulles Intl
19h 01m
1 stop
LAS09:53Las Vegas Harry Reid Intl
5 Sept
LAS17:14Las Vegas Harry Reid Intl
20h 38m
1 stop
IAD16:52Washington, D.C. Dulles Intl
$326
Find similar

Southwest flights from Washington, D.C. Dulles Intl Airport to Las Vegas

Our best Southwest deals on Washington, D.C. Dulles Intl Airport to Las Vegas flight tickets
Southwest
24 Sept
IAD18:05Washington, D.C. Dulles Intl
6h 35m
1 stop
LAS21:40Las Vegas Harry Reid Intl
27 Sept
LAS05:40Las Vegas Harry Reid Intl
7h 40m
1 stop
IAD16:20Washington, D.C. Dulles Intl
$282
Find similar
Southwest
10 Nov
IAD17:50Washington, D.C. Dulles Intl
7h 45m
1 stop
LAS22:35Las Vegas Harry Reid Intl
13 Nov
LAS22:10Las Vegas Harry Reid Intl
12h 00m
1 stop
IAD13:10Washington, D.C. Dulles Intl
$291
Find similar
Southwest
10 Nov
IAD17:50Washington, D.C. Dulles Intl
7h 45m
1 stop
LAS22:35Las Vegas Harry Reid Intl
14 Nov
LAS09:55Las Vegas Harry Reid Intl
6h 05m
1 stop
IAD19:00Washington, D.C. Dulles Intl
$314
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 9 August 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport 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

Wed 10/9

09:00-11:03

Nonstop5h 03m

Las Vegas Harry Reid Intl

Sat 13/9

22:45-06:20

Nonstop4h 35m

$253

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 29/9

12:35-14:35

Nonstop5h 00m

Las Vegas Harry Reid Intl

Thu 2/10

19:05-06:39

1 stop8h 34m

$262

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 14/9

19:59-21:58

Nonstop4h 59m

Las Vegas Harry Reid Intl

Sat 20/9

22:45-06:20

Nonstop4h 35m

$265

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 14/9

19:59-21:58

Nonstop4h 59m

Las Vegas Harry Reid Intl

Wed 17/9

18:49-07:19

1 stop9h 30m

$274

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 24/9

18:05-21:40

1 stop6h 35m

Las Vegas Harry Reid Intl

Sat 27/9

05:40-16:20

1 stop7h 40m

$282

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 10/11

17:50-22:35

1 stop7h 45m

Las Vegas Harry Reid Intl

Thu 13/11

22:10-13:10

1 stop12h 00m

$291

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 10/11

17:40-23:33

1 stop8h 53m

Las Vegas Harry Reid Intl

Fri 14/11

07:25-17:13

1 stop6h 48m

$307

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 8/9

17:52-23:26

1 stop8h 34m

Las Vegas Harry Reid Intl

Thu 11/9

17:14-16:52

1 stop20h 38m

$308

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 26/8

17:52-09:37

1 stop18h 45m

Las Vegas Harry Reid Intl

Thu 11/9

19:47-16:52

1 stop18h 05m

$313

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 15/9

17:52-23:26

1 stop8h 34m

Las Vegas Harry Reid Intl

Wed 17/9

10:20-00:23

1 stop11h 03m

$349

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. Dulles Intl Airport 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. Dulles Intl Airport is in July. Flight prices, which tend to average around $385, 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 $397.

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

Fly from Washington, D.C. Dulles Intl to Las Vegas Harry Reid Intl for the best Washington, D.C. Dulles Intl - 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. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $618 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. Dulles Intl Airport for as low as $486 on momondo.

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

There are 2 cabin classes available to choose from on Washington, D.C. Dulles Intl 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. Dulles Intl Airport to Las Vegas flight prices changed over time?

As of August 2025, prices for Washington, D.C. Dulles Intl Airport to Las Vegas flights are approximately 54% cheaper when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to Las Vegas (IAD to LAS) flight deals and tips

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

Best price found

$127

Fastest flight time

4h 59m

Direct flights

Every day

Airports in Las Vegas

1 airport
The best one-way flight to Las Vegas from Washington, D.C. Dulles Intl Airport in the past 72 hours is $127. The best return flight deal from Washington, D.C. Dulles Intl Airport to Las Vegas found on momondo in the last 72 hours is $253.
The fastest flight from Washington, D.C. Dulles Intl Airport to Las Vegas takes 4h 59m
Direct flights go from Washington, D.C. Dulles Intl Airport 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. Dulles Intl to Las Vegas Harry Reid Intl by plane?

    The straight-line distance from Washington, D.C. Dulles Intl to Las Vegas Harry Reid Intl is 3310.3 km. Typically, this will take 4h 59m by plane in normal conditions.

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Las Vegas Harry Reid Intl Airport.

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

    The required travel and health documents for your Las Vegas Harry Reid Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Las Vegas Harry Reid Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Washington, D.C. Dulles Intl Airport 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?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Las Vegas from Washington, D.C..

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

All flight searches from Washington, D.C. to Las Vegas on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Washington, D.C. to Las Vegas flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Las Vegas, momondo offers a useful price alert feature which will track prices for flights to Las Vegas from Washington, D.C. and alert you when they change.

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