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Cheap flights from Las Vegas to Washington, D.C. from $56

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Las Vegas to Washington, D.C. departing on 8/29. 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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Cheap round-trip flights

Frontier Logo
11:00 pm - 6:34 amLAS-IAD
4h 34mnonstop
Frontier Logo
7:30 am - 9:29 amIAD-LAS
4h 59mnonstop
$163Frontier
Find Deal
Fri, Aug 15 - Mon, Aug 18
Frontier Logo
11:00 pm - 6:34 amLAS-IAD
4h 34mnonstop
Frontier Logo
8:00 am - 9:59 amIAD-LAS
4h 59mnonstop
$165Frontier
Find Deal
Thu, Aug 14 - Thu, Aug 21
Frontier Logo
11:00 pm - 6:34 amLAS-IAD
4h 34mnonstop
Frontier Logo
7:30 am - 9:29 amIAD-LAS
4h 59mnonstop
$180Frontier
Find Deal
Thu, Aug 14 - Sun, Aug 17
United Airlines Logo
10:45 pm - 6:20 amLAS-IAD
4h 35mnonstop
United Airlines Logo
7:59 pm - 9:58 pmIAD-LAS
4h 59mnonstop
$181United Airlines
Find Deal
Thu, Sep 18 - Sun, Sep 21
United Airlines Logo
10:45 pm - 6:20 amLAS-IAD
4h 35mnonstop
United Airlines Logo
7:59 pm - 9:58 pmIAD-LAS
4h 59mnonstop
$196United Airlines
Find Deal
Fri, Aug 22 - Tue, Sep 2
Hawaiian Airlines Logo
7:25 am - 5:13 pmLAS-IAD
6h 48m1 stop
Hawaiian Airlines Logo
5:40 pm - 11:33 pmIAD-LAS
8h 53m1 stop
$200Hawaiian Airlines
Find Deal
Thu, Oct 30 - Mon, Nov 3
Delta Logo
11:31 pm - 11:23 amLAS-IAD
8h 52m1 stop
Delta Logo
7:22 am - 12:09 pmIAD-LAS
7h 47m1 stop
$257Delta
Find Deal
Fri, Aug 22 - Sun, Aug 24
Delta Logo
11:35 am - 11:21 pmLAS-IAD
8h 46m1 stop
Delta Logo
7:30 am - 12:11 pmIAD-LAS
7h 41m1 stop
$269Delta
Find Deal
Wed, Aug 13 - Wed, Aug 20
Southwest Logo
11:55 am - 10:50 pmLAS-IAD
7h 55m1 stop
Southwest Logo
5:45 am - 9:20 amIAD-LAS
6h 35m1 stop
$274Southwest
Find Deal
Thu, Aug 21 - Wed, Aug 27
Southwest Logo
9:25 pm - 1:20 pmLAS-IAD
12h 55m1 stop
Southwest Logo
4:55 pm - 11:15 pmIAD-LAS
9h 20m1 stop
$279Southwest
Find Deal
Thu, Aug 21 - Wed, Aug 27

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

Our best Southwest deals on Las Vegas to Washington, D.C. Dulles Intl Airport flight tickets
Southwest
Aug 21
LAS11:55 amLas Vegas Harry Reid Intl
7h 55m
1 stop
IAD10:50 pmWashington, D.C. Dulles Intl
Aug 27
IAD5:45 amWashington, D.C. Dulles Intl
6h 35m
1 stop
LAS9:20 amLas Vegas Harry Reid Intl
$274
Find similar
Southwest
Aug 21
LAS9:25 pmLas Vegas Harry Reid Intl
12h 55m
1 stop
IAD1:20 pmWashington, D.C. Dulles Intl
Aug 27
IAD4:55 pmWashington, D.C. Dulles Intl
9h 20m
1 stop
LAS11:15 pmLas Vegas Harry Reid Intl
$279
Find similar
Southwest
Aug 14
LAS6:05 amLas Vegas Harry Reid Intl
6h 40m
1 stop
IAD3:45 pmWashington, D.C. Dulles Intl
Aug 21
IAD2:10 pmWashington, D.C. Dulles Intl
6h 45m
1 stop
LAS5:55 pmLas Vegas Harry Reid Intl
$294
Find similar

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

Our best Alaska Airlines deals on Las Vegas to Washington, D.C. Dulles Intl Airport flight tickets
Alaska Airlines
Sep 25
LAS5:14 pmLas Vegas Harry Reid Intl
20h 38m
1 stop
IAD4:52 pmWashington, D.C. Dulles Intl
Sep 29
IAD5:52 pmWashington, D.C. Dulles Intl
8h 34m
1 stop
LAS11:26 pmLas Vegas Harry Reid Intl
$201
Find similar
Alaska Airlines
Sep 18
LAS7:47 pmLas Vegas Harry Reid Intl
18h 05m
1 stop
IAD4:52 pmWashington, D.C. Dulles Intl
Sep 21
IAD5:52 pmWashington, D.C. Dulles Intl
8h 34m
1 stop
LAS11:26 pmLas Vegas Harry Reid Intl
$228
Find similar
Alaska Airlines
Aug 20
LAS5:14 pmLas Vegas Harry Reid Intl
20h 33m
1 stop
IAD4:47 pmWashington, D.C. Dulles Intl
Aug 24
IAD5:52 pmWashington, D.C. Dulles Intl
8h 34m
1 stop
LAS11:26 pmLas Vegas Harry Reid Intl
$230
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Las Vegas to Washington, D.C. Dulles Intl Airport 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 July 31, 2025.
Use the filters below to find and compare flights from Las Vegas to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Fri 8/15

11:00 pm-6:34 am

Nonstop4h 34m

Washington, D.C. Dulles Intl

Mon 8/18

7:30 am-9:29 am

Nonstop4h 59m

$163

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 8/14

11:00 pm-6:34 am

Nonstop4h 34m

Washington, D.C. Dulles Intl

Thu 8/21

8:00 am-9:59 am

Nonstop4h 59m

$165

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 8/14

11:00 pm-6:34 am

Nonstop4h 34m

Washington, D.C. Dulles Intl

Sun 8/17

7:30 am-9:29 am

Nonstop4h 59m

$180

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 9/18

10:45 pm-6:20 am

Nonstop4h 35m

Washington, D.C. Dulles Intl

Sun 9/21

7:59 pm-9:58 pm

Nonstop4h 59m

$181

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Fri 8/22

10:45 pm-6:20 am

Nonstop4h 35m

Washington, D.C. Dulles Intl

Tue 9/2

7:59 pm-9:58 pm

Nonstop4h 59m

$196

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 10/30

7:25 am-5:13 pm

1 stop6h 48m

Washington, D.C. Dulles Intl

Mon 11/3

5:40 pm-11:33 pm

1 stop8h 53m

$200

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Fri 8/22

11:31 pm-11:23 am

1 stop8h 52m

Washington, D.C. Dulles Intl

Sun 8/24

7:22 am-12:09 pm

1 stop7h 47m

$257

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 8/13

11:35 am-11:21 pm

1 stop8h 46m

Washington, D.C. Dulles Intl

Wed 8/20

7:30 am-12:11 pm

1 stop7h 41m

$269

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 8/21

11:55 am-10:50 pm

1 stop7h 55m

Washington, D.C. Dulles Intl

Wed 8/27

5:45 am-9:20 am

1 stop6h 35m

$274

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 8/21

9:25 pm-1:20 pm

1 stop12h 55m

Washington, D.C. Dulles Intl

Wed 8/27

4:55 pm-11:15 pm

1 stop9h 20m

$279

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 Washington, D.C. from

How to get the cheapest flight ticket from Las Vegas to Washington, D.C. Dulles Intl Airport

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 Washington, D.C. Dulles Intl Airport?

In general, May is the cheapest month to fly from Las Vegas to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $254. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of May, then flying in July is also cheap. Prices for this month can be found on momondo for an average of $257.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $365. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Las Vegas to Washington, D.C. Dulles Intl Airport for around $606.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Las Vegas in the evening is the least expensive time of day to depart. momondo users have found prices as low as $335 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $641 on average. Flights to Washington, D.C. Dulles Intl Airport from Las Vegas in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl flight route?

Fly from Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl for the best Las Vegas Harry Reid Intl - Washington, D.C. Dulles Intl flight prices

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Las Vegas when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $408 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Las Vegas for as low as $269 on momondo.

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

There are 4 cabin classes available to choose from on Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of July 2025, prices for Las Vegas to Washington, D.C. Dulles Intl Airport flights are approximately 41% cheaper when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Las Vegas to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Las Vegas to Washington, D.C. Dulles Intl Airport (LAS to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Las Vegas to Washington, D.C. Dulles Intl Airport

Best Price Found

$56

Fastest flight time

4h 19m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Las Vegas in the past 72 hours is $56. The best round-trip flight deal from Las Vegas to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $163.
The fastest flight from Las Vegas to Washington, D.C. Dulles Intl Airport takes 4h 19m
Direct flights go from Las Vegas to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

  • How far is Las Vegas Harry Reid Intl to Washington, D.C. Dulles Intl by plane?

    There are 2056.9 mi between Las Vegas Harry Reid Intl and Washington, D.C. Dulles Intl. By plane, this route typically takes 4h 34m.

  • When did momondo last update prices for flights from Las Vegas Harry Reid Intl Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Las Vegas Harry Reid Intl Airport to Washington, D.C. Dulles Intl Airport are updated daily.

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

  • How old do you have to be to fly from Las Vegas Harry Reid Intl Airport to Washington, D.C. Dulles 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 Las Vegas Harry Reid Intl Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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

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

Compare and see reviews for airlines that fly from Las Vegas to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $141Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
United AirlinesPriceFrom $256Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
SouthwestPriceFrom $256Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
DeltaPriceFrom $258Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $368Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

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

    United Airlines flight deals from Las Vegas to Washington, D.C. Dulles Intl Airport start from $256 round-trip. Over the 14 United Airlines flights for this route in a normal week, average airfare is usually $440 round-trip - but some users have found much cheaper deals with momondo.

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

    The best Frontier deal for Las Vegas to Washington, D.C. Dulles Intl Airport flight tickets found on momondo in the last 72 hours was $141, round-trip. It should be noted that an average Frontier flight deal for this route in this time was higher, at $217 round-trip. Frontier operates 7 flights out of Las Vegas into Washington, D.C. Dulles Intl Airport in an average week, so prices vary by time and availability. 3,239 Frontier reviews by users on momondo have scored the airline at 5.9/10.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
Arlington
National Harbor
Winchester
Woodbridge
Laurel
Tysons
Silver Spring
Waldorf
Fredericksburg
Manassas
Harpers Ferry
Towson
Rockville
Colonial Beach
Gaithersburg
Fairfax
Reston
Glen Burnie

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Las Vegas to Washington, D.C. for you.

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

Yes. All flights to Washington, D.C. from Las Vegas on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Las Vegas to Washington, D.C.?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Las Vegas to Washington, D.C..

I’m not ready to book a flight from Las Vegas to Washington, D.C. right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Las Vegas to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

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