Cheap flights from Las Vegas to Washington, D.C. from $114

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 1/9. 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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Multiple Airlines Logo
1:22 pm - 8:56 pm
LAS
-
IAD
28h 34m1 stop
Multiple Airlines Logo
6:00 am - 7:54 pm
IAD
-
LAS
16h 54m1 stop
$210Multiple Airlines
Wed, Jan 7 - Wed, Jan 14
Multiple Airlines Logo
9:59 pm - 10:42 am
LAS
-
IAD
33h 43m2 stops
Multiple Airlines Logo
10:50 am - 3:40 pm
IAD
-
LAS
31h 50m1 stop
$212Multiple Airlines
Tue, Jan 20 - Fri, Jan 30
Frontier Logo
6:15 am - 8:56 pm
LAS
-
IAD
11h 41m1 stop
Frontier Logo
8:40 am - 10:08 am
IAD
-
LAS
28h 28m1 stop
$217Frontier
Thu, Jan 8 - Fri, Jan 9
Multiple Airlines Logo
11:51 am - 7:55 am
LAS
-
IAD
17h 04m2 stops
Multiple Airlines Logo
8:35 am - 11:42 am
IAD
-
LAS
30h 07m1 stop
$219Multiple Airlines
Thu, Jan 8 - Mon, Jan 12
Multiple Airlines Logo
11:58 pm - 10:54 am
LAS
-
IAD
7h 56m1 stop
Multiple Airlines Logo
7:05 am - 7:05 pm
IAD
-
LAS
15h 00m1 stop
$227Multiple Airlines
Wed, Feb 11 - Tue, Feb 17
Frontier Logo
11:59 pm - 4:43 pm
LAS
-
IAD
13h 44m1 stop
Frontier Logo
8:09 am - 11:30 am
IAD
-
LAS
30h 21m1 stop
$234Frontier
Wed, Mar 4 - Fri, Mar 6
Multiple Airlines Logo
11:51 am - 10:05 am
LAS
-
IAD
19h 14m1 stop
Multiple Airlines Logo
8:00 am - 6:58 pm
IAD
-
LAS
13h 58m2 stops
$246Multiple Airlines
Sat, Jan 17 - Tue, Jan 20
Frontier Logo
11:03 pm - 9:25 am
LAS
-
IAD
31h 22m1 stop
Frontier Logo
11:37 am - 9:48 pm
IAD
-
LAS
13h 11m1 stop
$248Frontier
Tue, Feb 10 - Sat, Feb 14
Multiple Airlines Logo
11:59 pm - 4:28 pm
LAS
-
IAD
13h 29m1 stop
Multiple Airlines Logo
5:26 pm - 10:31 pm
IAD
-
LAS
8h 05m1 stop
$251Multiple Airlines
Wed, Jan 21 - Wed, Jan 28
Frontier Logo
10:58 pm - 11:28 am
LAS
-
IAD
9h 30m1 stop
Frontier Logo
6:00 am - 12:56 pm
IAD
-
LAS
9h 56m1 stop
$252Frontier
Fri, Jan 9 - Sun, Jan 11

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

Our best Frontier deals on Las Vegas to Washington, D.C. Dulles Intl Airport flight tickets
Frontier
Jan 8
LAS6:15 amLas Vegas Harry Reid Intl
11h 41m
1 stop
IAD8:56 pmWashington, D.C. Dulles Intl
Jan 9
IAD8:40 amWashington, D.C. Dulles Intl
28h 28m
1 stop
LAS10:08 amLas Vegas Harry Reid Intl
Frontier
Mar 4
LAS11:59 pmLas Vegas Harry Reid Intl
13h 44m
1 stop
IAD4:43 pmWashington, D.C. Dulles Intl
Mar 6
IAD8:09 amWashington, D.C. Dulles Intl
30h 21m
1 stop
LAS11:30 amLas Vegas Harry Reid Intl
Frontier
Feb 10
LAS11:03 pmLas Vegas Harry Reid Intl
31h 22m
1 stop
IAD9:25 amWashington, D.C. Dulles Intl
Feb 14
IAD11:37 amWashington, D.C. Dulles Intl
13h 11m
1 stop
LAS9:48 pmLas Vegas Harry Reid Intl

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

Our best United Airlines deals on Las Vegas to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
Feb 11
LAS9:56 amLas Vegas Harry Reid Intl
8h 23m
1 stop
IAD9:19 pmWashington, D.C. Dulles Intl
Feb 17
IAD5:45 pmWashington, D.C. Dulles Intl
5h 37m
LAS8:22 pmLas Vegas Harry Reid Intl
United Airlines
Jan 8
LAS6:44 pmLas Vegas Harry Reid Intl
7h 37m
1 stop
IAD5:21 amWashington, D.C. Dulles Intl
Jan 9
IAD8:20 amWashington, D.C. Dulles Intl
17h 59m
2 stops
LAS11:19 pmLas Vegas Harry Reid Intl
United Airlines
Jan 17
LAS1:55 pmLas Vegas Harry Reid Intl
4h 30m
IAD9:25 pmWashington, D.C. Dulles Intl
Jan 20
IAD8:30 amWashington, D.C. Dulles Intl
5h 27m
LAS10:57 amLas Vegas Harry Reid Intl

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 December 18, 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

Wed 1/7

1:22 pm-8:56 pm

1 stop28h 34m

Washington, D.C. Dulles Intl

Wed 1/14

6:00 am-7:54 pm

1 stop16h 54m

$210

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Tue 1/20

9:59 pm-10:42 am

2 stops33h 43m

Washington, D.C. Dulles Intl

Fri 1/30

10:50 am-3:40 pm

1 stop31h 50m

$212

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 1/8

6:15 am-8:56 pm

1 stop11h 41m

Washington, D.C. Dulles Intl

Fri 1/9

8:40 am-10:08 am

1 stop28h 28m

$217

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 1/8

11:51 am-7:55 am

2 stops17h 04m

Washington, D.C. Dulles Intl

Mon 1/12

8:35 am-11:42 am

1 stop30h 07m

$219

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 2/11

11:58 pm-10:54 am

1 stop7h 56m

Washington, D.C. Dulles Intl

Tue 2/17

7:05 am-7:05 pm

1 stop15h 00m

$227

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 3/4

11:59 pm-4:43 pm

1 stop13h 44m

Washington, D.C. Dulles Intl

Fri 3/6

8:09 am-11:30 am

1 stop30h 21m

$234

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Sat 1/17

11:51 am-10:05 am

1 stop19h 14m

Washington, D.C. Dulles Intl

Tue 1/20

8:00 am-6:58 pm

2 stops13h 58m

$246

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Tue 2/10

11:03 pm-9:25 am

1 stop31h 22m

Washington, D.C. Dulles Intl

Sat 2/14

11:37 am-9:48 pm

1 stop13h 11m

$248

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 1/21

11:59 pm-4:28 pm

1 stop13h 29m

Washington, D.C. Dulles Intl

Wed 1/28

5:26 pm-10:31 pm

1 stop8h 05m

$251

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Fri 1/9

10:58 pm-11:28 am

1 stop9h 30m

Washington, D.C. Dulles Intl

Sun 1/11

6:00 am-12:56 pm

1 stop9h 56m

$252

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 $357. 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 $644.

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 afternoon is the least expensive time of day to depart. momondo users have found prices as low as $283 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $620 on average. Flights to Washington, D.C. Dulles Intl Airport from Las Vegas at noon 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 $376 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?

You could potentially save up to 12% on your flight if you consider stops on a Las Vegas to Washington, D.C. Dulles Intl Airport flight.

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

As of December 2025, prices for Las Vegas to Washington, D.C. Dulles Intl Airport flights are approximately 10% 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

$206

Fastest flight time

4h 22m

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 $206. 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 $338.
The fastest flight from Las Vegas to Washington, D.C. Dulles Intl Airport takes 4h 22m
Direct flights go from Las Vegas to Washington, D.C. Dulles Intl Airport every day.
  • 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 22m.

  • 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 $148Free CancellationRating
5.8
3,080 reviews
Search Frontier flights
United AirlinesPriceFrom $222Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
8,009 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 $222 round-trip. Over the 16 United Airlines flights for this route in a normal week, average airfare is usually $395 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
Towson
Harpers Ferry
Rockville
Gaithersburg
Reston
Manassas
Sterling
Fairfax

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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1 adult
Sat 1/17
Sat 1/24

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