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Cheap flights from Washington, D.C. Dulles Intl Airport to Las Vegas from $138

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 16/12. 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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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Las Vegas

Cheap return flights

United Airlines Logo
19:44 - 22:03IAD-LAS
5h 19mdirect
United Airlines Logo
23:50 - 07:09LAS-IAD
4h 19mdirect
$245United Airlines
Find Deal
Sat, 8 Nov - Tue, 11 Nov
United Airlines Logo
19:59 - 21:59IAD-LAS
5h 00mdirect
United Airlines Logo
19:05 - 06:39LAS-IAD
8h 34m1 stop
$254United Airlines
Find Deal
Wed, 1 Oct - Sat, 4 Oct
Southwest Logo
17:00 - 23:25IAD-LAS
9h 25m1 stop
Southwest Logo
06:30 - 16:00LAS-IAD
6h 30m1 stop
$275Southwest
Find Deal
Sat, 25 Oct - Tue, 28 Oct
Southwest Logo
09:05 - 19:00IAD-LAS
12h 55m2 stops
Southwest Logo
05:40 - 15:45LAS-IAD
7h 05m1 stop
$283Southwest
Find Deal
Wed, 11 Feb - Sat, 14 Feb
Hawaiian Airlines Logo
17:40 - 22:26IAD-LAS
7h 46m1 stop
Hawaiian Airlines Logo
07:25 - 17:13LAS-IAD
6h 48m1 stop
$322Hawaiian Airlines
Find Deal
Tue, 28 Oct - Sat, 1 Nov
Alaska Airlines Logo
17:40 - 22:26IAD-LAS
7h 46m1 stop
Alaska Airlines Logo
07:25 - 17:13LAS-IAD
6h 48m1 stop
$340Alaska Airlines
Find Deal
Tue, 28 Oct - Tue, 4 Nov
Alaska Airlines Logo
19:41 - 09:56IAD-LAS
17h 15m1 stop
Alaska Airlines Logo
07:25 - 17:13LAS-IAD
6h 48m1 stop
$362Alaska Airlines
Find Deal
Fri, 24 Oct - Sat, 1 Nov
Hawaiian Airlines Logo
17:37 - 23:26IAD-LAS
8h 49m1 stop
Hawaiian Airlines Logo
06:00 - 17:30LAS-IAD
8h 30m1 stop
$368Hawaiian Airlines
Find Deal
Sun, 7 Dec - Fri, 12 Dec
Delta Logo
12:27 - 18:46IAD-LAS
9h 19m1 stop
Delta Logo
00:43 - 11:36LAS-IAD
7h 53m1 stop
$386Delta
Find Deal
Sat, 8 Nov - Tue, 11 Nov
Delta Logo
06:18 - 12:45IAD-LAS
9h 27m1 stop
Delta Logo
22:05 - 09:00LAS-IAD
7h 55m1 stop
$394Delta
Find Deal
Wed, 8 Oct - Wed, 15 Oct

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

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Las Vegas flight tickets
United Airlines
8 Nov
IAD19:44Washington, D.C. Dulles Intl
5h 19m
LAS22:03Las Vegas Harry Reid Intl
11 Nov
LAS23:50Las Vegas Harry Reid Intl
4h 19m
IAD07:09Washington, D.C. Dulles Intl
$245
Find similar
United Airlines
1 Oct
IAD19:59Washington, D.C. Dulles Intl
5h 00m
LAS21:59Las Vegas Harry Reid Intl
4 Oct
LAS19:05Las Vegas Harry Reid Intl
8h 34m
1 stop
IAD06:39Washington, D.C. Dulles Intl
$254
Find similar
United Airlines
15 Feb
IAD08:45Washington, D.C. Dulles Intl
5h 33m
LAS11:18Las Vegas Harry Reid Intl
18 Feb
LAS13:20Las Vegas Harry Reid Intl
4h 32m
IAD20:52Washington, D.C. Dulles Intl
$269
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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
25 Oct
IAD17:00Washington, D.C. Dulles Intl
9h 25m
1 stop
LAS23:25Las Vegas Harry Reid Intl
28 Oct
LAS06:30Las Vegas Harry Reid Intl
6h 30m
1 stop
IAD16:00Washington, D.C. Dulles Intl
$275
Find similar
Southwest
11 Feb
IAD09:05Washington, D.C. Dulles Intl
12h 55m
2 stops
LAS19:00Las Vegas Harry Reid Intl
14 Feb
LAS05:40Las Vegas Harry Reid Intl
7h 05m
1 stop
IAD15:45Washington, D.C. Dulles Intl
$283
Find similar
Southwest
24 Oct
IAD18:25Washington, D.C. Dulles Intl
8h 00m
1 stop
LAS23:25Las Vegas Harry Reid Intl
28 Oct
LAS10:45Las Vegas Harry Reid Intl
9h 20m
2 stops
IAD23:05Washington, D.C. Dulles Intl
$307
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 13 September 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

Sat 8/11

19:44-22:03

Nonstop5h 19m

Las Vegas Harry Reid Intl

Tue 11/11

23:50-07:09

Nonstop4h 19m

$245

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 1/10

19:59-21:59

Nonstop5h 00m

Las Vegas Harry Reid Intl

Sat 4/10

19:05-06:39

1 stop8h 34m

$254

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 25/10

17:00-23:25

1 stop9h 25m

Las Vegas Harry Reid Intl

Tue 28/10

06:30-16:00

1 stop6h 30m

$275

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 11/2

09:05-19:00

2 stops12h 55m

Las Vegas Harry Reid Intl

Sat 14/2

05:40-15:45

1 stop7h 05m

$283

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 28/10

17:40-22:26

1 stop7h 46m

Las Vegas Harry Reid Intl

Sat 1/11

07:25-17:13

1 stop6h 48m

$322

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 28/10

17:40-22:26

1 stop7h 46m

Las Vegas Harry Reid Intl

Tue 4/11

07:25-17:13

1 stop6h 48m

$340

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Fri 24/10

19:41-09:56

1 stop17h 15m

Las Vegas Harry Reid Intl

Sat 1/11

07:25-17:13

1 stop6h 48m

$362

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 7/12

17:37-23:26

1 stop8h 49m

Las Vegas Harry Reid Intl

Fri 12/12

06:00-17:30

1 stop8h 30m

$368

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 8/11

12:27-18:46

1 stop9h 19m

Las Vegas Harry Reid Intl

Tue 11/11

00:43-11:36

1 stop7h 53m

$386

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 8/10

06:18-12:45

1 stop9h 27m

Las Vegas Harry Reid Intl

Wed 15/10

22:05-09:00

1 stop7h 55m

$394

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 $377, 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 $392.

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 $606 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 $489 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 September 2025, prices for Washington, D.C. Dulles Intl Airport to Las Vegas flights are approximately 19% more expensive 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

Fastest flight time

4h 59m

Direct flights

Every day

Airports in Las Vegas

1 airport
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 5h 00m 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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