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Cheap flights from Washington, D.C. Reagan-National Airport to Las Vegas from C$ 121

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/10. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LAS
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Reagan-National to Las Vegas

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Las Vegas (LAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 September 2025.

Round-trip from

C$ 240

One-way from

C$ 121

Popular in

December

Cheapest in

August

Average price

C$ 517
Southwest
  • Southwest
  • 21/10-25/10
  • 1 total stop
  • 12h 40m total
  • Washington, D.C. to Las Vegas
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United Airlines
  • United Airlines
  • 25/10
  • 1 total stop
  • 6h 58m total
  • Washington, D.C. to Las Vegas
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Highest demand for flights based on searches. 2% potential increase in price (C$ 22 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 14 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Reagan-National to Las Vegas

Cheapest flights from Reagan-National to Las Vegas
Explore the most affordable flight options available from Reagan-National to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Tue 21/105:20 p.m.DCA - LAS
1 stop7h 30mSouthwest
Sat 25/108:15 a.m.LAS - DCA
Nonstop4h 40mSouthwest
Deal found 11/9C$ 240
Mon 8/124:35 p.m.DCA - LAS
Nonstop5h 15mSouthwest
Sat 13/1211:35 a.m.LAS - DCA
Nonstop4h 25mSouthwest
Deal found 11/9C$ 248
Sat 13/125:00 p.m.DCA - LAS
1 stop7h 00mSouthwest
Tue 16/129:10 a.m.LAS - DCA
1 stop6h 05mSouthwest
Deal found 11/9C$ 254
Sat 25/1012:10 p.m.DCA - LAS
1 stop7h 15mSouthwest
Fri 31/1012:00 p.m.LAS - DCA
Nonstop4h 30mSouthwest
Deal found 11/9C$ 258
Sat 1/115:30 p.m.DCA - LAS
1 stop6h 40mSouthwest
Sat 8/1111:35 a.m.LAS - DCA
Nonstop4h 25mSouthwest
Deal found 11/9C$ 270
Sat 6/126:05 a.m.DCA - LAS
Nonstop5h 20mSouthwest
Fri 12/129:20 a.m.LAS - DCA
Nonstop4h 25mSouthwest
Deal found 10/9C$ 272
Sat 4/104:50 p.m.DCA - LAS
1 stop6h 40mSouthwest
Mon 6/1011:35 p.m.LAS - DCA
1 stop7h 30mSouthwest
Deal found 11/9C$ 276
Sat 4/106:05 a.m.DCA - LAS
Nonstop5h 10mSouthwest
Sat 11/108:15 a.m.LAS - DCA
Nonstop4h 40mSouthwest
Deal found 10/9C$ 284
Sat 6/126:05 a.m.DCA - LAS
Nonstop5h 20mSouthwest
Mon 8/1211:35 p.m.LAS - DCA
1 stop8h 00mSouthwest
Deal found 10/9C$ 285

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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, Cheapflights users made 629,999 searches. Data last updated 11 September 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Las Vegas that are best for you.

Fly from

Reagan-National

Fly to

Las Vegas

Route

Depart

Return

Price

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Tue 21/10

9:05 a.m.-3:25 p.m.

1 stop9h 20m

Las Vegas Harry Reid Intl

Sat 25/10

8:15 a.m.-3:55 p.m.

Nonstop4h 40m

C$ 302

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Sat 13/12

5:00 p.m.-10:40 p.m.

2 stops8h 40m

Las Vegas Harry Reid Intl

Tue 16/12

6:05 a.m.-3:00 p.m.

1 stop5h 55m

C$ 312

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Tue 9/12

9:59 a.m.-5:37 p.m.

1 stop10h 38m

Las Vegas Harry Reid Intl

Tue 16/12

10:25 a.m.-9:02 p.m.

1 stop7h 37m

C$ 327

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Sat 6/12

5:00 p.m.-11:55 p.m.

1 stop9h 55m

Las Vegas Harry Reid Intl

Wed 10/12

10:25 a.m.-9:02 p.m.

1 stop7h 37m

C$ 327

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Tue 7/10

4:00 p.m.-6:15 p.m.

Nonstop5h 15m

Las Vegas Harry Reid Intl

Tue 14/10

11:45 p.m.-10:00 a.m.

1 stop7h 15m

C$ 341

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Tue 30/12

6:45 p.m.-11:25 p.m.

1 stop7h 40m

Las Vegas Harry Reid Intl

Mon 5/1

9:00 a.m.-8:14 p.m.

1 stop8h 14m

C$ 356

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Tue 28/10

6:10 a.m.-10:15 a.m.

1 stop7h 05m

Las Vegas Harry Reid Intl

Mon 3/11

11:54 p.m.-9:10 a.m.

1 stop6h 16m

C$ 356

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Wed 31/12

12:32 p.m.-5:52 p.m.

1 stop8h 20m

Las Vegas Harry Reid Intl

Tue 6/1

11:25 p.m.-8:49 a.m.

1 stop6h 24m

C$ 356

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Tue 21/10

5:00 p.m.-10:20 p.m.

1 stop8h 20m

Las Vegas Harry Reid Intl

Mon 27/10

11:10 p.m.-8:42 a.m.

1 stop6h 32m

C$ 356

Washington, D.C.Las Vegas

DCA - LAS

DCALAS

Washington, D.C. Reagan-National

Mon 20/10

6:20 p.m.-11:30 p.m.

1 stop8h 10m

Las Vegas Harry Reid Intl

Mon 27/10

11:10 p.m.-8:42 a.m.

1 stop6h 32m

C$ 356

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 22 results
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Best time to book a flight from Reagan-National to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Reagan-National with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Las Vegas

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to Las Vegas?

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to Las Vegas. Price data was last updated on 29 August 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. Reagan-National Airport to Las Vegas, you should look to book at least 37 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Las Vegas?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Las Vegas (average of C$ 212). Flying from Washington, D.C. Reagan-National Airport to Las Vegas in August is currently the most expensive (average of C$ 291). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DCA to LAS?

Find hourly flight availability from Reagan-National to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to Las Vegas as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Las Vegas from Washington, D.C. Reagan-National?

    For a flight from Washington, D.C. Reagan-National to Las Vegas, you will be flying into Harry Reid Intl. Las Vegas Harry Reid Intl (LAS) is just 10.0 km from the centre of the city. Harry Reid Intl is the only Las Vegas airport and it handles 3 inbound flights from Washington, D.C. Reagan-National per day. 0 airlines have flights to Las Vegas Harry Reid Intl from Washington, D.C. Reagan-National on a regular basis.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Las Vegas?

    For as low as C$ 302, Southwest can have you in Las Vegas from Washington, D.C. Reagan-National Airport in 9h 20m. The distance from Washington, D.C. Reagan-National Airport to Las Vegas is about 3351 km. This flight may include one or multiple stops.

  • Can I find deals for flights from Reagan-National to Las Vegas that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Las Vegas?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Las Vegas.

  • Can I find deals for business class flights from Reagan-National to Las Vegas?

    Yes. Cheapflights offers flight deals from Reagan-National to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Las Vegas?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Las Vegas (average of C$ 212). Flying from Washington, D.C. Reagan-National Airport to Las Vegas in August is currently the most expensive (average of C$ 291). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Las Vegas from Reagan-National today and book when prices fit your budget.

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