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Cheap flights from Washington, D.C. Dulles Intl Airport to Las Vegas from $112

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 3/8. 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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
6:20 pm - 2:47 pm
IAD
-
LAS
23h 27m
1 stop
Alaska Airlines Logo
3:27 pm - 5:27 pm
LAS
-
IAD
23h 00m
1 stop
$252Alaska Airlines
Tue, Feb 24 - Tue, Mar 3
Frontier Logo
11:43 am - 4:50 pm
IAD
-
LAS
8h 07m
1 stop
Frontier Logo
7:05 am - 5:57 pm
LAS
-
IAD
7h 52m
1 stop
$253Frontier
Sun, Feb 22 - Thu, Feb 26
Frontier Logo
6:20 am - 1:43 pm
IAD
-
LAS
10h 23m
1 stop
Frontier Logo
11:59 pm - 7:27 am
LAS
-
IAD
28h 28m
1 stop
$254Frontier
Fri, Apr 17 - Tue, Apr 21
Frontier Logo
6:20 am - 1:43 pm
IAD
-
LAS
10h 23m
1 stop
Frontier Logo
12:19 pm - 12:36 am
LAS
-
IAD
9h 17m
1 stop
$255Frontier
Sun, May 3 - Tue, May 12
Frontier Logo
7:00 am - 12:16 pm
IAD
-
LAS
8h 16m
1 stop
Frontier Logo
1:00 pm - 11:56 pm
LAS
-
IAD
7h 56m
1 stop
$256Frontier
Tue, Mar 17 - Tue, Mar 24
Frontier Logo
11:37 am - 9:48 pm
IAD
-
LAS
13h 11m
1 stop
Frontier Logo
7:10 am - 10:15 am
LAS
-
IAD
24h 05m
1 stop
$257Frontier
Sat, Feb 14 - Sat, Feb 21
Multiple Airlines Logo
11:41 am - 10:28 pm
IAD
-
LAS
13h 47m
1 stop
Multiple Airlines Logo
6:00 am - 5:27 pm
LAS
-
IAD
8h 27m
1 stop
$258Multiple Airlines
Mon, Mar 2 - Sat, Mar 7
Frontier Logo
5:05 am - 4:21 pm
IAD
-
LAS
14h 16m
1 stop
Frontier Logo
1:00 pm - 11:56 pm
LAS
-
IAD
7h 56m
1 stop
$259Frontier
Sat, Mar 21 - Tue, Mar 24
Frontier Logo
6:20 am - 1:43 pm
IAD
-
LAS
10h 23m
1 stop
Frontier Logo
12:19 pm - 12:36 am
LAS
-
IAD
9h 17m
1 stop
$261Frontier
Wed, May 13 - Tue, May 19
Frontier Logo
8:09 am - 1:43 pm
IAD
-
LAS
32h 34m
2 stops
Frontier Logo
11:59 pm - 7:27 am
LAS
-
IAD
28h 28m
1 stop
$263Frontier
Sun, Apr 26 - Tue, Apr 28

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
Feb 22
IAD11:43 amWashington, D.C. Dulles Intl
8h 07m
1 stop
LAS4:50 pmLas Vegas Harry Reid Intl
Feb 26
LAS7:05 amLas Vegas Harry Reid Intl
7h 52m
1 stop
IAD5:57 pmWashington, D.C. Dulles Intl
$253
Frontier
Apr 17
IAD6:20 amWashington, D.C. Dulles Intl
10h 23m
1 stop
LAS1:43 pmLas Vegas Harry Reid Intl
Apr 21
LAS11:59 pmLas Vegas Harry Reid Intl
28h 28m
1 stop
IAD7:27 amWashington, D.C. Dulles Intl
$254
Frontier
May 3
IAD6:20 amWashington, D.C. Dulles Intl
10h 23m
1 stop
LAS1:43 pmLas Vegas Harry Reid Intl
May 12
LAS12:19 pmLas Vegas Harry Reid Intl
9h 17m
1 stop
IAD12:36 amWashington, D.C. Dulles Intl
$255

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
Mar 11
IAD8:45 amWashington, D.C. Dulles Intl
5h 33m
LAS11:18 amLas Vegas Harry Reid Intl
Mar 18
LAS8:04 amLas Vegas Harry Reid Intl
4h 27m
IAD3:31 pmWashington, D.C. Dulles Intl
$267
United Airlines
Mar 11
IAD4:10 pmWashington, D.C. Dulles Intl
9h 23m
1 stop
LAS10:33 pmLas Vegas Harry Reid Intl
Mar 17
LAS2:00 pmLas Vegas Harry Reid Intl
4h 25m
IAD9:25 pmWashington, D.C. Dulles Intl
$273
United Airlines
Jun 13
IAD8:03 pmWashington, D.C. Dulles Intl
5h 08m
LAS10:11 pmLas Vegas Harry Reid Intl
Jun 20
LAS6:15 pmLas Vegas Harry Reid Intl
8h 12m
1 stop
IAD5:27 amWashington, D.C. Dulles Intl
$284

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 February 3, 2026.
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

Tue 2/24

6:20 pm-2:47 pm

1 stop23h 27m

Las Vegas Harry Reid Intl

Tue 3/3

3:27 pm-5:27 pm

1 stop23h 00m

$252

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 2/22

11:43 am-4:50 pm

1 stop8h 07m

Las Vegas Harry Reid Intl

Thu 2/26

7:05 am-5:57 pm

1 stop7h 52m

$253

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Fri 4/17

6:20 am-1:43 pm

1 stop10h 23m

Las Vegas Harry Reid Intl

Tue 4/21

11:59 pm-7:27 am

1 stop28h 28m

$254

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 5/3

6:20 am-1:43 pm

1 stop10h 23m

Las Vegas Harry Reid Intl

Tue 5/12

12:19 pm-12:36 am

1 stop9h 17m

$255

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 3/17

7:00 am-12:16 pm

1 stop8h 16m

Las Vegas Harry Reid Intl

Tue 3/24

1:00 pm-11:56 pm

1 stop7h 56m

$256

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 2/14

11:37 am-9:48 pm

1 stop13h 11m

Las Vegas Harry Reid Intl

Sat 2/21

7:10 am-10:15 am

1 stop24h 05m

$257

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 3/2

11:41 am-10:28 pm

1 stop13h 47m

Las Vegas Harry Reid Intl

Sat 3/7

6:00 am-5:27 pm

1 stop8h 27m

$258

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 3/21

5:05 am-4:21 pm

1 stop14h 16m

Las Vegas Harry Reid Intl

Tue 3/24

1:00 pm-11:56 pm

1 stop7h 56m

$259

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 5/13

6:20 am-1:43 pm

1 stop10h 23m

Las Vegas Harry Reid Intl

Tue 5/19

12:19 pm-12:36 am

1 stop9h 17m

$261

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 4/26

8:09 am-1:43 pm

2 stops32h 34m

Las Vegas Harry Reid Intl

Tue 4/28

11:59 pm-7:27 am

1 stop28h 28m

$263

Flights are sorted by cheapest round-trip 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 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 $250. 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 $251.

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

Our data shows that Saturday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $343. Flights from Washington, D.C. Dulles Intl Airport to Las Vegas on a Thursday will generally be more expensive and average around $434. 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 $360. Flights to Las Vegas are more costly in the afternoon, with an average ticket price of $451. 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 $321 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 46% 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 February 2026, prices for Washington, D.C. Dulles Intl Airport to Las Vegas flights are approximately 39% 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 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

$250

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 $250. 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 $499.
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 in Las Vegas. From Washington, D.C. Dulles Intl Airport there are direct flights to 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 00m.

  • 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 $88Free CancellationRating
6.3
8,396 reviews
Search Spirit Airlines flights
FrontierPriceFrom $98Free CancellationRating
5.7
3,051 reviews
Search Frontier flights
United AirlinesPriceFrom $223Free CancellationRating
7.4
9,231 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $230Free CancellationRating
8.0
11,831 reviews
Search Alaska Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
8,132 reviews
Search Delta flights
SouthwestPriceFrom $256Free CancellationRating
8.0
4,272 reviews
Search Southwest flights
American AirlinesPriceFrom $368Free CancellationRating
7.2
11,213 reviews
Search American Airlines flights

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

    Southwest flight deals from Washington, D.C. Dulles Intl Airport to Las Vegas start from $256 round-trip. Over the 1 Southwest flight for this route in a normal week, average airfare is usually $432 round-trip - but some users have found much cheaper deals with momondo.

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

    Across 9,231 United Airlines reviews on momondo, the average score is 7.4/10. United Airlines flies from Washington, D.C. Dulles Intl Airport to Las Vegas about 15 times each week, with ticket deals ranging from $223 to $460. Price data is based on momondo searches in the last 72 hours.

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
Paradise
Mesquite
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.

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