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Cheap flights from Las Vegas to Washington, D.C. from $120

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 2/7. 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

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Frontier Logo
6:00 am - 11:05 pmLAS-IAD
14h 05m2 stops
Frontier Logo
5:45 am - 9:42 pmIAD-LAS
18h 57m1 stop
$186Frontier
Find Deal
Fri, Dec 5 - Mon, Dec 8
Frontier Logo
8:59 am - 11:05 pmLAS-IAD
11h 06m1 stop
Frontier Logo
12:04 pm - 11:29 pmIAD-LAS
14h 25m2 stops
$190Frontier
Find Deal
Fri, Dec 12 - Sun, Dec 14
Frontier Logo
10:20 pm - 8:24 pmLAS-IAD
19h 04m1 stop
Frontier Logo
9:20 pm - 9:43 amIAD-LAS
15h 23m1 stop
$196Frontier
Find Deal
Sat, Dec 6 - Sat, Dec 13
Frontier Logo
8:59 am - 11:05 pmLAS-IAD
11h 06m1 stop
Frontier Logo
9:20 pm - 9:43 amIAD-LAS
15h 23m1 stop
$202Frontier
Find Deal
Fri, Dec 12 - Sun, Dec 14
Multiple Airlines Logo
10:58 pm - 11:10 pmLAS-IAD
21h 12m1 stop
Multiple Airlines Logo
9:00 am - 11:46 pmIAD-LAS
17h 46m2 stops
$203Multiple Airlines
Find Deal
Wed, Dec 3 - Tue, Dec 9
Multiple Airlines Logo
10:20 pm - 8:24 pmLAS-IAD
19h 04m1 stop
Multiple Airlines Logo
6:58 pm - 8:38 amIAD-LAS
16h 40m1 stop
$209Multiple Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
Alaska Airlines Logo
7:25 am - 5:30 pmLAS-IAD
7h 05m1 stop
Alaska Airlines Logo
5:37 pm - 10:27 pmIAD-LAS
7h 50m1 stop
$236Alaska Airlines
Find Deal
Wed, Dec 3 - Tue, Dec 9
Alaska Airlines Logo
7:25 am - 5:30 pmLAS-IAD
7h 05m1 stop
Alaska Airlines Logo
5:37 pm - 10:27 pmIAD-LAS
7h 50m1 stop
$256Alaska Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10
Delta Logo
11:40 pm - 10:13 amLAS-IAD
7h 33m1 stop
Delta Logo
6:00 am - 12:28 pmIAD-LAS
9h 28m1 stop
$257Delta
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Fri, Nov 14 - Sun, Nov 16
Delta Logo
9:51 am - 7:26 pmLAS-IAD
6h 35m1 stop
Delta Logo
7:35 pm - 12:27 amIAD-LAS
7h 52m1 stop
$267Delta
Find Deal
Thu, Nov 27 - Tue, Dec 2

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

Our best Delta deals on Las Vegas to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Nov 10
LAS12:43 amLas Vegas Harry Reid Intl
7h 56m
1 stop
IAD11:39 amWashington, D.C. Dulles Intl
Nov 12
IAD7:01 amWashington, D.C. Dulles Intl
7h 09m
1 stop
LAS11:10 amLas Vegas Harry Reid Intl
$257
Find similar
Delta
Nov 27
LAS9:51 amLas Vegas Harry Reid Intl
6h 35m
1 stop
IAD7:26 pmWashington, D.C. Dulles Intl
Dec 2
IAD7:35 pmWashington, D.C. Dulles Intl
7h 52m
1 stop
LAS12:27 amLas Vegas Harry Reid Intl
$267
Find similar
Delta
Jan 15
LAS9:00 amLas Vegas Harry Reid Intl
8h 37m
1 stop
IAD8:37 pmWashington, D.C. Dulles Intl
Jan 20
IAD5:26 pmWashington, D.C. Dulles Intl
7h 54m
1 stop
LAS10:20 pmLas Vegas Harry Reid Intl
$274
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
Dec 3
LAS7:25 amLas Vegas Harry Reid Intl
7h 05m
1 stop
IAD5:30 pmWashington, D.C. Dulles Intl
Dec 9
IAD5:37 pmWashington, D.C. Dulles Intl
7h 50m
1 stop
LAS10:27 pmLas Vegas Harry Reid Intl
$236
Find similar
Alaska Airlines
Nov 12
LAS7:25 amLas Vegas Harry Reid Intl
6h 48m
1 stop
IAD5:13 pmWashington, D.C. Dulles Intl
Nov 18
IAD5:40 pmWashington, D.C. Dulles Intl
7h 46m
1 stop
LAS10:26 pmLas Vegas Harry Reid Intl
$256
Find similar
Alaska Airlines
Feb 6
LAS6:00 amLas Vegas Harry Reid Intl
8h 04m
1 stop
IAD5:04 pmWashington, D.C. Dulles Intl
Feb 9
IAD5:26 pmWashington, D.C. Dulles Intl
9h 02m
1 stop
LAS11:28 pmLas Vegas Harry Reid Intl
$270
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 October 30, 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 12/5

6:00 am-11:05 pm

2 stops14h 05m

Washington, D.C. Dulles Intl

Mon 12/8

5:45 am-9:42 pm

1 stop18h 57m

$186

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Fri 12/12

8:59 am-11:05 pm

1 stop11h 06m

Washington, D.C. Dulles Intl

Sun 12/14

12:04 pm-11:29 pm

2 stops14h 25m

$190

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Sat 12/6

10:20 pm-8:24 pm

1 stop19h 04m

Washington, D.C. Dulles Intl

Sat 12/13

9:20 pm-9:43 am

1 stop15h 23m

$196

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Fri 12/12

8:59 am-11:05 pm

1 stop11h 06m

Washington, D.C. Dulles Intl

Sun 12/14

9:20 pm-9:43 am

1 stop15h 23m

$202

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 12/3

10:58 pm-11:10 pm

1 stop21h 12m

Washington, D.C. Dulles Intl

Tue 12/9

9:00 am-11:46 pm

2 stops17h 46m

$203

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Fri 12/5

10:20 pm-8:24 pm

1 stop19h 04m

Washington, D.C. Dulles Intl

Mon 12/8

6:58 pm-8:38 am

1 stop16h 40m

$209

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 12/3

7:25 am-5:30 pm

1 stop7h 05m

Washington, D.C. Dulles Intl

Tue 12/9

5:37 pm-10:27 pm

1 stop7h 50m

$236

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 12/3

7:25 am-5:30 pm

1 stop7h 05m

Washington, D.C. Dulles Intl

Wed 12/10

5:37 pm-10:27 pm

1 stop7h 50m

$256

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Fri 11/14

11:40 pm-10:13 am

1 stop7h 33m

Washington, D.C. Dulles Intl

Sun 11/16

6:00 am-12:28 pm

1 stop9h 28m

$257

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 11/27

9:51 am-7:26 pm

1 stop6h 35m

Washington, D.C. Dulles Intl

Tue 12/2

7:35 pm-12:27 am

1 stop7h 52m

$267

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, July 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 $237. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of July, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $253.

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 $355. When flying out on a Monday, 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 $628.

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 $328 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 $597 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 $381 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 $273 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.

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

No. A direct flight is the cheapest option for a flight between Las Vegas to Washington, D.C. Dulles Intl Airport.

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

As of October 2025, prices for Las Vegas to Washington, D.C. Dulles Intl Airport flights are approximately 20% 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

$227

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 $227. 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 $487.
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 6h 35m.

  • 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
5.8
3,123 reviews
Search Frontier flights
SouthwestPriceFrom $204Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
United AirlinesPriceFrom $227Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
7,993 reviews
Search Delta 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 $227 round-trip. Over the 13 United Airlines flights for this route in a normal week, average airfare is usually $412 round-trip - but some users have found much cheaper deals with momondo.

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

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

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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