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Cheap flights from Washington, D.C. Dulles Intl Airport to Las Vegas from $89

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 10/14. 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

Frontier Logo
4:22 pm - 9:48 pmIAD-LAS
8h 26m1 stop
Frontier Logo
12:55 am - 11:59 amLAS-IAD
8h 04m1 stop
$152Frontier
Find Deal
Sat, Oct 18 - Fri, Oct 24
Frontier Logo
6:15 am - 9:48 pmIAD-LAS
18h 33m1 stop
Frontier Logo
10:23 pm - 12:11 amLAS-IAD
22h 48m1 stop
$153Frontier
Find Deal
Mon, Oct 20 - Thu, Nov 13
Frontier Logo
4:22 pm - 9:48 pmIAD-LAS
8h 26m1 stop
Frontier Logo
11:03 pm - 7:46 pmLAS-IAD
17h 43m1 stop
$154Frontier
Find Deal
Sat, Oct 18 - Tue, Oct 21
Frontier Logo
9:00 am - 8:47 pmIAD-LAS
14h 47m1 stop
Frontier Logo
11:03 pm - 3:17 pmLAS-IAD
13h 14m1 stop
$156Frontier
Find Deal
Tue, Oct 21 - Fri, Oct 24
Frontier Logo
4:45 pm - 9:48 pmIAD-LAS
8h 03m1 stop
Frontier Logo
9:05 pm - 11:59 amLAS-IAD
11h 54m1 stop
$158Frontier
Find Deal
Mon, Oct 20 - Fri, Oct 24
United Airlines Logo
9:55 am - 11:55 amIAD-LAS
5h 00mnonstop
United Airlines Logo
8:35 am - 3:55 pmLAS-IAD
4h 20mnonstop
$163United Airlines
Find Deal
Sat, Feb 21 - Tue, Feb 24
United Airlines Logo
7:59 pm - 9:59 pmIAD-LAS
5h 00mnonstop
United Airlines Logo
7:05 pm - 6:39 amLAS-IAD
8h 34m1 stop
$169United Airlines
Find Deal
Wed, Oct 1 - Sat, Oct 4
United Airlines Logo
7:41 pm - 10:00 pmIAD-LAS
5h 19mnonstop
United Airlines Logo
11:50 pm - 7:09 amLAS-IAD
4h 19mnonstop
$179United Airlines
Find Deal
Mon, Oct 27 - Tue, Oct 28
United Airlines Logo
7:41 pm - 10:00 pmIAD-LAS
5h 19mnonstop
United Airlines Logo
7:04 pm - 6:48 amLAS-IAD
8h 44m1 stop
$185United Airlines
Find Deal
Tue, Nov 4 - Fri, Nov 7
Logo
4:22 pm - 9:36 pmIAD-LAS
8h 14m1 stop
Logo
11:03 pm - 7:46 pmLAS-IAD
17h 43m1 stop
$186
Find Deal
Sat, Oct 11 - Tue, Oct 14

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
Feb 21
IAD9:55 amWashington, D.C. Dulles Intl
5h 00m
LAS11:55 amLas Vegas Harry Reid Intl
Feb 24
LAS8:35 amLas Vegas Harry Reid Intl
4h 20m
IAD3:55 pmWashington, D.C. Dulles Intl
$163
Find similar
United Airlines
Oct 1
IAD7:59 pmWashington, D.C. Dulles Intl
5h 00m
LAS9:59 pmLas Vegas Harry Reid Intl
Oct 4
LAS7:05 pmLas Vegas Harry Reid Intl
8h 34m
1 stop
IAD6:39 amWashington, D.C. Dulles Intl
$169
Find similar
United Airlines
Oct 27
IAD7:41 pmWashington, D.C. Dulles Intl
5h 19m
LAS10:00 pmLas Vegas Harry Reid Intl
Oct 28
LAS11:50 pmLas Vegas Harry Reid Intl
4h 19m
IAD7:09 amWashington, D.C. Dulles Intl
$179
Find similar

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
Oct 18
IAD4:22 pmWashington, D.C. Dulles Intl
8h 26m
1 stop
LAS9:48 pmLas Vegas Harry Reid Intl
Oct 24
LAS12:55 amLas Vegas Harry Reid Intl
8h 04m
1 stop
IAD11:59 amWashington, D.C. Dulles Intl
$152
Find similar
Frontier
Oct 20
IAD6:15 amWashington, D.C. Dulles Intl
18h 33m
1 stop
LAS9:48 pmLas Vegas Harry Reid Intl
Nov 13
LAS10:23 pmLas Vegas Harry Reid Intl
22h 48m
1 stop
IAD12:11 amWashington, D.C. Dulles Intl
$153
Find similar
Frontier
Oct 18
IAD4:22 pmWashington, D.C. Dulles Intl
8h 26m
1 stop
LAS9:48 pmLas Vegas Harry Reid Intl
Oct 21
LAS11:03 pmLas Vegas Harry Reid Intl
17h 43m
1 stop
IAD7:46 pmWashington, D.C. Dulles Intl
$154
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 September 11, 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 10/18

4:22 pm-9:48 pm

1 stop8h 26m

Las Vegas Harry Reid Intl

Fri 10/24

12:55 am-11:59 am

1 stop8h 04m

$152

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 10/20

6:15 am-9:48 pm

1 stop18h 33m

Las Vegas Harry Reid Intl

Thu 11/13

10:23 pm-12:11 am

1 stop22h 48m

$153

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 10/18

4:22 pm-9:48 pm

1 stop8h 26m

Las Vegas Harry Reid Intl

Tue 10/21

11:03 pm-7:46 pm

1 stop17h 43m

$154

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 10/21

9:00 am-8:47 pm

1 stop14h 47m

Las Vegas Harry Reid Intl

Fri 10/24

11:03 pm-3:17 pm

1 stop13h 14m

$156

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 10/20

4:45 pm-9:48 pm

1 stop8h 03m

Las Vegas Harry Reid Intl

Fri 10/24

9:05 pm-11:59 am

1 stop11h 54m

$158

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 2/21

9:55 am-11:55 am

Nonstop5h 00m

Las Vegas Harry Reid Intl

Tue 2/24

8:35 am-3:55 pm

Nonstop4h 20m

$163

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 10/1

7:59 pm-9:59 pm

Nonstop5h 00m

Las Vegas Harry Reid Intl

Sat 10/4

7:05 pm-6:39 am

1 stop8h 34m

$169

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 10/27

7:41 pm-10:00 pm

Nonstop5h 19m

Las Vegas Harry Reid Intl

Tue 10/28

11:50 pm-7:09 am

Nonstop4h 19m

$179

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 11/4

7:41 pm-10:00 pm

Nonstop5h 19m

Las Vegas Harry Reid Intl

Fri 11/7

7:04 pm-6:48 am

1 stop8h 44m

$185

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 10/11

4:22 pm-9:36 pm

1 stop8h 14m

Las Vegas Harry Reid Intl

Tue 10/14

11:03 pm-7:46 pm

1 stop17h 43m

$186

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 July is, on average, the cheapest month to fly to Las Vegas from Washington, D.C. Dulles Intl Airport, with most prices found around $251. The month of August is another great option to travel to Las Vegas, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $261.

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 $359. Flights from Washington, D.C. Dulles Intl Airport to Las Vegas on a Thursday will generally be more expensive and average around $447. 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 $379. Flights to Las Vegas are more costly at noon, with an average ticket price of $579. Departure times at noon 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 $403 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 $325 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.

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 20% 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

$153

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 $153. 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 $263.
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?

    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
FrontierPriceFrom $119Free CancellationRating
5.8
3,177 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $159Free CancellationRating
6.3
8,023 reviews
Search Spirit Airlines flights
Alaska AirlinesPriceFrom $233Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Sun Country AirPriceFrom $242Free CancellationRating
6.9
330 reviews
Search Sun Country Air flights
United AirlinesPriceFrom $252Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
SouthwestPriceFrom $256Free CancellationRating
8.0
4,248 reviews
Search Southwest flights
DeltaPriceFrom $256Free CancellationRating
7.9
7,960 reviews
Search Delta flights
American AirlinesPriceFrom $368Free CancellationRating
7.2
10,000 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 $252 round-trip. Over the 16 United Airlines flights for this route in a normal week, average airfare is usually $463 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
North Las Vegas
Paradise
Kingman
Pahrump
Primm
Furnace Creek
Boulder City
Winchester
Sunrise Manor
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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