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Cheap flights from Washington, D.C. Dulles Intl Airport to Las Vegas from $88

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 11/20. 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 round-trip flights

Frontier Logo
1:02 pm - 6:29 pmIAD-LAS
8h 27m1 stop
Frontier Logo
12:55 am - 12:02 pmLAS-IAD
8h 07m1 stop
$155Frontier
Find Deal
Sat, Sep 27 - Fri, Oct 3
Frontier Logo
1:02 pm - 11:50 pmIAD-LAS
13h 48m1 stop
Frontier Logo
12:55 am - 12:02 pmLAS-IAD
8h 07m1 stop
$156Frontier
Find Deal
Sat, Sep 27 - Fri, Oct 3
Frontier Logo
1:55 pm - 9:23 pmIAD-LAS
10h 28m1 stop
Frontier Logo
12:55 am - 12:02 pmLAS-IAD
8h 07m1 stop
$160Frontier
Find Deal
Mon, Sep 15 - Fri, Sep 19
Frontier Logo
7:09 pm - 9:10 amIAD-LAS
17h 01m1 stop
Frontier Logo
12:55 am - 12:02 pmLAS-IAD
8h 07m1 stop
$165Frontier
Find Deal
Sun, Sep 21 - Fri, Sep 26
Frontier Logo
7:09 pm - 9:10 amIAD-LAS
17h 01m1 stop
Frontier Logo
12:55 am - 12:02 pmLAS-IAD
8h 07m1 stop
$166Frontier
Find Deal
Sun, Sep 21 - Fri, Sep 26
Frontier Logo
1:55 pm - 9:23 pmIAD-LAS
10h 28m1 stop
Frontier Logo
11:04 pm - 6:24 pmLAS-IAD
16h 20m1 stop
$170Frontier
Find Deal
Sun, Sep 14 - Fri, Sep 19
Logo
5:00 am - 10:34 amIAD-LAS
8h 34m1 stop
Logo
10:45 pm - 11:55 pmLAS-IAD
22h 10m1 stop
$207
Find Deal
Sun, Nov 2 - Fri, Nov 7
Logo
10:17 am - 8:53 pmIAD-LAS
13h 36m1 stop
Logo
11:25 am - 9:17 amLAS-IAD
18h 52m1 stop
$209
Find Deal
Mon, Sep 15 - Sat, Sep 20
Alaska Airlines Logo
5:40 pm - 10:26 pmIAD-LAS
7h 46m1 stop
Alaska Airlines Logo
6:00 am - 5:13 pmLAS-IAD
8h 13m1 stop
$210Alaska Airlines
Find Deal
Tue, Oct 28 - Fri, Oct 31
Hawaiian Airlines Logo
5:40 pm - 10:26 pmIAD-LAS
7h 46m1 stop
Hawaiian Airlines Logo
6:00 am - 5:13 pmLAS-IAD
8h 13m1 stop
$226Hawaiian Airlines
Find Deal
Tue, Oct 28 - Fri, Oct 31

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
Sep 27
IAD1:02 pmWashington, D.C. Dulles Intl
8h 27m
1 stop
LAS6:29 pmLas Vegas Harry Reid Intl
Oct 3
LAS12:55 amLas Vegas Harry Reid Intl
8h 07m
1 stop
IAD12:02 pmWashington, D.C. Dulles Intl
$155
Find similar
Frontier
Sep 27
IAD1:02 pmWashington, D.C. Dulles Intl
13h 48m
1 stop
LAS11:50 pmLas Vegas Harry Reid Intl
Oct 3
LAS12:55 amLas Vegas Harry Reid Intl
8h 07m
1 stop
IAD12:02 pmWashington, D.C. Dulles Intl
$156
Find similar
Frontier
Sep 15
IAD1:55 pmWashington, D.C. Dulles Intl
10h 28m
1 stop
LAS9:23 pmLas Vegas Harry Reid Intl
Sep 19
LAS12:55 amLas Vegas Harry Reid Intl
8h 07m
1 stop
IAD12:02 pmWashington, D.C. Dulles Intl
$160
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 August 29, 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 9/27

1:02 pm-6:29 pm

1 stop8h 27m

Las Vegas Harry Reid Intl

Fri 10/3

12:55 am-12:02 pm

1 stop8h 07m

$155

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 9/27

1:02 pm-11:50 pm

1 stop13h 48m

Las Vegas Harry Reid Intl

Fri 10/3

12:55 am-12:02 pm

1 stop8h 07m

$156

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 9/15

1:55 pm-9:23 pm

1 stop10h 28m

Las Vegas Harry Reid Intl

Fri 9/19

12:55 am-12:02 pm

1 stop8h 07m

$160

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 9/21

7:09 pm-9:10 am

1 stop17h 01m

Las Vegas Harry Reid Intl

Fri 9/26

12:55 am-12:02 pm

1 stop8h 07m

$165

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 9/21

7:09 pm-9:10 am

1 stop17h 01m

Las Vegas Harry Reid Intl

Fri 9/26

12:55 am-12:02 pm

1 stop8h 07m

$166

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 9/14

1:55 pm-9:23 pm

1 stop10h 28m

Las Vegas Harry Reid Intl

Fri 9/19

11:04 pm-6:24 pm

1 stop16h 20m

$170

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 11/2

5:00 am-10:34 am

1 stop8h 34m

Las Vegas Harry Reid Intl

Fri 11/7

10:45 pm-11:55 pm

1 stop22h 10m

$207

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 9/15

10:17 am-8:53 pm

1 stop13h 36m

Las Vegas Harry Reid Intl

Sat 9/20

11:25 am-9:17 am

1 stop18h 52m

$209

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 10/28

5:40 pm-10:26 pm

1 stop7h 46m

Las Vegas Harry Reid Intl

Fri 10/31

6:00 am-5:13 pm

1 stop8h 13m

$210

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 10/28

5:40 pm-10:26 pm

1 stop7h 46m

Las Vegas Harry Reid Intl

Fri 10/31

6:00 am-5:13 pm

1 stop8h 13m

$226

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 $262.

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 $362. Flights from Washington, D.C. Dulles Intl Airport to Las Vegas on a Thursday will generally be more expensive and average around $451. 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 $380. Flights to Las Vegas are more costly at noon, with an average ticket price of $539. 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 $404 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 $323 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 August 2025, prices for Washington, D.C. Dulles Intl Airport to Las Vegas flights are approximately 52% 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

$140

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 $140. 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 $210.
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 7h 46m.

  • 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 $115Free CancellationRating
6.3
8,021 reviews
Search Spirit Airlines flights
FrontierPriceFrom $120Free CancellationRating
5.8
3,205 reviews
Search Frontier flights
Alaska AirlinesPriceFrom $233Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Sun Country AirPriceFrom $242Free CancellationRating
6.9
331 reviews
Search Sun Country Air flights
United AirlinesPriceFrom $253Free CancellationRating
7.4
8,941 reviews
Search United Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
7,979 reviews
Search Delta flights
SouthwestPriceFrom $256Free CancellationRating
8.0
4,242 reviews
Search Southwest 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 $253 round-trip. Over the 15 United Airlines flights for this route in a normal week, average airfare is usually $464 round-trip - but some users have found much cheaper deals with momondo.

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

    Across 3,205 Frontier reviews on momondo, the average score is 5.8/10. Frontier flies from Washington, D.C. Dulles Intl Airport to Las Vegas about 4 times each week, with ticket deals ranging from $120 to $200. 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
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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