Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. Dulles Intl Airport to Las Vegas from $116

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 1/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
5:26 pm - 11:28 pm
IAD
-
LAS
9h 02m1 stop
Alaska Airlines Logo
6:00 am - 5:04 pm
LAS
-
IAD
8h 04m1 stop
$224Alaska Airlines
Thu, Jan 8 - Sat, Jan 10
Alaska Airlines Logo
5:26 pm - 10:31 pm
IAD
-
LAS
8h 05m1 stop
Alaska Airlines Logo
6:14 pm - 5:04 pm
LAS
-
IAD
19h 50m1 stop
$225Alaska Airlines
Tue, Feb 3 - Fri, Feb 6
United Airlines Logo
7:36 pm - 9:57 pm
IAD
-
LAS
5h 21mnonstop
United Airlines Logo
11:50 pm - 7:13 am
LAS
-
IAD
4h 23mnonstop
$226United Airlines
Sun, Jan 11 - Fri, Jan 16
Alaska Airlines Logo
5:26 pm - 11:28 pm
IAD
-
LAS
9h 02m1 stop
Alaska Airlines Logo
6:00 am - 5:04 pm
LAS
-
IAD
8h 04m1 stop
$227Alaska Airlines
Thu, Jan 8 - Wed, Jan 14
Frontier Logo
9:20 pm - 9:43 am
IAD
-
LAS
15h 23m1 stop
Frontier Logo
10:12 pm - 2:29 pm
LAS
-
IAD
13h 17m1 stop
$228Frontier
Sun, Dec 14 - Mon, Dec 15
Frontier Logo
9:59 pm - 8:19 am
IAD
-
LAS
13h 20m1 stop
Frontier Logo
9:00 am - 7:40 am
LAS
-
IAD
19h 40m2 stops
$229Frontier
Thu, Jan 8 - Sat, Jan 10
United Airlines Logo
5:45 pm - 8:22 pm
IAD
-
LAS
5h 37mnonstop
United Airlines Logo
12:20 pm - 10:16 pm
LAS
-
IAD
6h 56m1 stop
$230United Airlines
Tue, Feb 17 - Sat, Feb 21
Multiple Airlines Logo
1:31 pm - 11:02 pm
IAD
-
LAS
12h 31m2 stops
Multiple Airlines Logo
11:51 am - 9:55 am
LAS
-
IAD
19h 04m1 stop
$231Multiple Airlines
Mon, Jan 26 - Sat, Jan 31
United Airlines Logo
7:36 pm - 9:57 pm
IAD
-
LAS
5h 21mnonstop
United Airlines Logo
7:06 pm - 7:14 am
LAS
-
IAD
9h 08m1 stop
$232United Airlines
Sun, Jan 11 - Fri, Jan 16
Frontier Logo
9:58 pm - 9:43 am
IAD
-
LAS
14h 45m1 stop
Frontier Logo
10:58 pm - 11:28 am
LAS
-
IAD
9h 30m1 stop
$233Frontier
Tue, Dec 30 - Tue, Jan 6

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

Our best Frontier deals on Washington, D.C. Dulles Intl Airport to Las Vegas flight tickets
Frontier
Dec 12
IAD5:19 pmWashington, D.C. Dulles Intl
7h 51m
1 stop
LAS10:10 pmLas Vegas Harry Reid Intl
Dec 15
LAS8:59 amLas Vegas Harry Reid Intl
11h 06m
1 stop
IAD11:05 pmWashington, D.C. Dulles Intl
$227
Find similar
Frontier
Dec 14
IAD9:20 pmWashington, D.C. Dulles Intl
15h 23m
1 stop
LAS9:43 amLas Vegas Harry Reid Intl
Dec 15
LAS10:12 pmLas Vegas Harry Reid Intl
13h 17m
1 stop
IAD2:29 pmWashington, D.C. Dulles Intl
$228
Find similar
Frontier
Jan 8
IAD9:59 pmWashington, D.C. Dulles Intl
13h 20m
1 stop
LAS8:19 amLas Vegas Harry Reid Intl
Jan 10
LAS9:00 amLas Vegas Harry Reid Intl
19h 40m
2 stops
IAD7:40 amWashington, D.C. Dulles Intl
$229
Find similar

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
Jan 8
IAD5:26 pmWashington, D.C. Dulles Intl
9h 02m
1 stop
LAS11:28 pmLas Vegas Harry Reid Intl
Jan 10
LAS6:00 amLas Vegas Harry Reid Intl
8h 04m
1 stop
IAD5:04 pmWashington, D.C. Dulles Intl
$224
Find similar
Alaska Airlines
Feb 3
IAD5:26 pmWashington, D.C. Dulles Intl
8h 05m
1 stop
LAS10:31 pmLas Vegas Harry Reid Intl
Feb 6
LAS6:14 pmLas Vegas Harry Reid Intl
19h 50m
1 stop
IAD5:04 pmWashington, D.C. Dulles Intl
$225
Find similar
Alaska Airlines
Jan 8
IAD5:26 pmWashington, D.C. Dulles Intl
9h 02m
1 stop
LAS11:28 pmLas Vegas Harry Reid Intl
Jan 14
LAS6:00 amLas Vegas Harry Reid Intl
8h 04m
1 stop
IAD5:04 pmWashington, D.C. Dulles Intl
$227
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated December 4, 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

Thu 1/8

5:26 pm-11:28 pm

1 stop9h 02m

Las Vegas Harry Reid Intl

Sat 1/10

6:00 am-5:04 pm

1 stop8h 04m

$224

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 2/3

5:26 pm-10:31 pm

1 stop8h 05m

Las Vegas Harry Reid Intl

Fri 2/6

6:14 pm-5:04 pm

1 stop19h 50m

$225

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 1/11

7:36 pm-9:57 pm

Nonstop5h 21m

Las Vegas Harry Reid Intl

Fri 1/16

11:50 pm-7:13 am

Nonstop4h 23m

$226

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Thu 1/8

5:26 pm-11:28 pm

1 stop9h 02m

Las Vegas Harry Reid Intl

Wed 1/14

6:00 am-5:04 pm

1 stop8h 04m

$227

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 12/14

9:20 pm-9:43 am

1 stop15h 23m

Las Vegas Harry Reid Intl

Mon 12/15

10:12 pm-2:29 pm

1 stop13h 17m

$228

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Thu 1/8

9:59 pm-8:19 am

1 stop13h 20m

Las Vegas Harry Reid Intl

Sat 1/10

9:00 am-7:40 am

2 stops19h 40m

$229

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 2/17

5:45 pm-8:22 pm

Nonstop5h 37m

Las Vegas Harry Reid Intl

Sat 2/21

12:20 pm-10:16 pm

1 stop6h 56m

$230

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 1/26

1:31 pm-11:02 pm

2 stops12h 31m

Las Vegas Harry Reid Intl

Sat 1/31

11:51 am-9:55 am

1 stop19h 04m

$231

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 1/11

7:36 pm-9:57 pm

Nonstop5h 21m

Las Vegas Harry Reid Intl

Fri 1/16

7:06 pm-7:14 am

1 stop9h 08m

$232

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 12/30

9:58 pm-9:43 am

1 stop14h 45m

Las Vegas Harry Reid Intl

Tue 1/6

10:58 pm-11:28 am

1 stop9h 30m

$233

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 month of August is, on average, the cheapest month to fly to Las Vegas from Washington, D.C. Dulles Intl Airport, with most prices found around $247. The month of July is another great option to travel to Las Vegas, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $250.

What is the cheapest day to depart on your flight to Las Vegas?

Our data shows that Tuesday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $345. Flights from Washington, D.C. Dulles Intl Airport to Las Vegas on a Thursday will generally be more expensive and average around $431. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Las Vegas?

The cheapest time of day to fly to Las Vegas is in the morning when flights can be purchased for as low as $363. Flights to Las Vegas are more costly in the afternoon, with an average ticket price of $449. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $396 when searching weeks out. 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 $315 on momondo.

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

There are 4 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.

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

You could potentially save up to 11% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Las Vegas flight.

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

As of December 2025, prices for Washington, D.C. Dulles Intl Airport to Las Vegas flights are approximately 4% 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 round-trip 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

$198

Fastest flight time

5h 00m

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 $198. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Las Vegas found on momondo in the last 72 hours is $367.
The fastest flight from Washington, D.C. Dulles Intl Airport to Las Vegas takes 5h 00m
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?

    There are 2056.9 mi between Washington, D.C. Dulles Intl and Las Vegas Harry Reid Intl. A reasonable flight in good conditions will take 5h 21m.

  • 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 many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Las Vegas Harry Reid Intl Airport?

  • 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 layovers. 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 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 license 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. Dulles Intl Airport to Las Vegas?

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to Las Vegas?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Las Vegas

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Las Vegas with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $91Free CancellationRating
6.3
8,158 reviews
Search Spirit Airlines flights
FrontierPriceFrom $120Free CancellationRating
5.8
3,092 reviews
Search Frontier flights
Alaska AirlinesPriceFrom $231Free CancellationRating
8.0
11,399 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights
SouthwestPriceFrom $256Free CancellationRating
8.0
4,252 reviews
Search Southwest flights
DeltaPriceFrom $256Free CancellationRating
7.9
8,009 reviews
Search Delta flights
American AirlinesPriceFrom $368Free CancellationRating
7.2
11,044 reviews
Search American Airlines flights

  • United Airlines Flights From Washington, D.C. Dulles Intl Airport to Las Vegas

    United Airlines flight deals from Washington, D.C. Dulles Intl Airport to Las Vegas start from $236 round-trip. Over the 21 United Airlines flights for this route in a normal week, average airfare is usually $450 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Laughlin
Mount Charleston
Henderson
Mesquite
Paradise
North Las Vegas
Kingman
Pahrump
Primm
Furnace Creek
Boulder City
Sunrise Manor
Winchester
Needles

Why use momondo?

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

Finding the right flight to Las Vegas from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Las Vegas quick and easy, saving you time and money.

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

Flights from Washington, D.C. to Las Vegas with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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?

Yes. momondo can track prices for Washington, D.C. to Las Vegas flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Las Vegas trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 1/3
Sat 1/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States