Cheap flights from Washington, D.C. Reagan-National Airport to Las Vegas from C$ 153
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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
Find flight deals from Reagan-National to Las Vegas
Cheapest flights from Reagan-National to Las VegasExplore 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 27 October 2025.
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 27 October 2025.
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 27 October 2025.
Cheapflights Fare Finder
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
Fly to
Route
Depart
Return
Price
Washington, D.C.Las Vegas
DCA - LAS
DCALAS
Washington, D.C. Reagan-National
Tue 9/12
6:00 a.m.-11:52 a.m.
1 stop8h 52m
Las Vegas Harry Reid Intl
Wed 10/12
9:53 a.m.-10:59 p.m.
1 stop10h 06m
Washington, D.C.Las Vegas
DCA - LAS
DCALAS
Washington, D.C. Reagan-National
Tue 3/3
6:25 p.m.-11:46 p.m.
1 stop8h 21m
Las Vegas Harry Reid Intl
Wed 4/3
9:00 a.m.-7:15 p.m.
1 stop7h 15m
Washington, D.C.Las Vegas
DCA - LAS
DCALAS
Washington, D.C. Reagan-National
Tue 9/12
4:15 p.m.-8:45 p.m.
1 stop7h 30m
Las Vegas Harry Reid Intl
Wed 10/12
12:44 a.m.-11:37 a.m.
1 stop7h 53m
Washington, D.C.Las Vegas
DCA - LAS
DCALAS
Washington, D.C. Reagan-National
Fri 30/1
12:20 p.m.-6:56 p.m.
1 stop9h 36m
Las Vegas Harry Reid Intl
Sun 1/2
10:15 p.m.-9:12 a.m.
1 stop7h 57m
Washington, D.C.Las Vegas
DCA - LAS
DCALAS
Washington, D.C. Reagan-National
Fri 6/2
12:20 p.m.-6:56 p.m.
1 stop9h 36m
Las Vegas Harry Reid Intl
Mon 9/2
11:25 p.m.-9:12 a.m.
1 stop6h 47m
Washington, D.C.Las Vegas
DCA - LAS
DCALAS
Washington, D.C. Reagan-National
Wed 15/4
6:55 p.m.-12:09 a.m.
1 stop8h 14m
Las Vegas Harry Reid Intl
Tue 21/4
9:00 p.m.-8:01 a.m.
1 stop8h 01m
Washington, D.C.Las Vegas
DCA - LAS
DCALAS
Washington, D.C. Reagan-National
Sun 15/2
5:15 p.m.-9:41 p.m.
1 stop7h 26m
Las Vegas Harry Reid Intl
Tue 17/2
10:10 p.m.-9:14 a.m.
1 stop8h 04m
Washington, D.C.Las Vegas
DCA - LAS
DCALAS
Washington, D.C. Reagan-National
Sun 15/2
4:40 p.m.-7:00 p.m.
Nonstop5h 20m
Las Vegas Harry Reid Intl
Tue 17/2
9:10 a.m.-4:40 p.m.
Nonstop4h 30m
Washington, D.C.Las Vegas
DCA - LAS
DCALAS
Washington, D.C. Reagan-National
Tue 17/2
4:40 p.m.-7:00 p.m.
Nonstop5h 20m
Las Vegas Harry Reid Intl
Fri 20/2
9:20 a.m.-4:50 p.m.
Nonstop4h 30m
Washington, D.C.Las Vegas
DCA - LAS
DCALAS
Washington, D.C. Reagan-National
Fri 14/11
5:10 p.m.-11:28 p.m.
1 stop9h 18m
Las Vegas Harry Reid Intl
Mon 17/11
12:43 a.m.-11:39 a.m.
1 stop7h 56m
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.
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?
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 61 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$ 207). Flying from Washington, D.C. Reagan-National Airport to Las Vegas in December is currently the most expensive (average of C$ 334). 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?
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.
How often are flights from Washington, D.C. to Las Vegas delayed?
About 21% of weekly flights between Washington, D.C. and Las Vegas have experienced delays in the past year, with the average delay time being 154 minutes.
What is the most punctual flight time for Washington, D.C. to Las Vegas flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Washington, D.C. to Las Vegas flights?
Over the past year, American Airlines has had the lowest number of delays on this route, with just 8% of flights being delayed.
Related info for your journey
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Why should you use Cheapflights to find cheap flight tickets from Reagan-National to Las Vegas?
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Can Cheapflights notify me if prices for flights from Reagan-National to Las Vegas become cheaper?
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.