
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $270 (Kiwi.com) |
One-way from | $110 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $480 |
Good round-trip deal | $499 or less |
Good one-way deal | $287 or less |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Mon 5/11
7:02 pm-11:22 pm
1 stop7h 20m
Las Vegas Harry Reid Intl
Mon 5/18
1:00 pm-10:56 pm
1 stop6h 56m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Tue 3/3
6:20 pm-8:14 pm
1 stop28h 54m
Las Vegas Harry Reid Intl
Thu 3/5
6:33 am-5:27 pm
1 stop7h 54m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Tue 3/10
7:05 am-6:18 pm
2 stops14h 13m
Las Vegas Harry Reid Intl
Tue 3/17
7:29 pm-5:22 pm
1 stop18h 53m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Mon 5/11
5:11 pm-10:05 pm
1 stop7h 54m
Las Vegas Harry Reid Intl
Thu 5/14
1:35 pm-11:59 pm
1 stop7h 24m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Tue 4/28
9:00 am-4:04 pm
1 stop10h 04m
Las Vegas Harry Reid Intl
Wed 4/29
6:00 am-12:09 am
2 stops15h 09m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Mon 3/9
7:05 am-10:28 pm
2 stops18h 23m
Las Vegas Harry Reid Intl
Thu 3/12
6:33 am-5:27 pm
1 stop7h 54m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Fri 4/24
7:20 pm-5:28 pm
1 stop25h 08m
Las Vegas Harry Reid Intl
Wed 5/6
6:00 am-5:41 pm
1 stop8h 41m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Sat 3/14
1:19 pm-10:03 pm
1 stop11h 44m
Las Vegas Harry Reid Intl
Fri 3/20
11:35 pm-7:19 pm
1 stop16h 44m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Tue 3/24
2:36 pm-8:55 pm
1 stop9h 19m
Las Vegas Harry Reid Intl
Tue 3/31
8:10 am-3:49 pm
Nonstop4h 39m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Tue 3/31
8:20 am-3:19 pm
1 stop9h 59m
Las Vegas Harry Reid Intl
Wed 4/8
8:10 am-3:49 pm
Nonstop4h 39m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Las Vegas may vary depending on when you book. For the best chance of a lower fare, look to book 20 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, June is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Las Vegas (average of $119). Flying from Washington, D.C. Dulles Intl Airport to Las Vegas in March is currently the most expensive (average of $292). 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.
One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Las Vegas is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 43% on airfare.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Las Vegas flight should consider departing on Saturday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
About 17% of weekly flights between Washington, D.C. and Las Vegas have experienced delays in the past year, with the average delay time being 177 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Wednesday 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.
Over the last year, United Airlines have had the lowest number of delays on this route, with just 16% of flights being delayed.
San Diego (SAN) – chosen by Cheapflights users on 50% of 1-stop itineraries from Washington, D.C. Dulles Intl Airport to Las Vegas on Cheapflights.
Atlanta (ATL) is the most affordable 1-stop option, with an average round-trip price of $184.
Flights via Atlanta (ATL) have the shortest average one-way travel time for 1-stop routes: 7h 51m.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 2h 26m.
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Thomas,Dec 2025
SEA - DEN
Crew
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Thomas,Dec 2025
SEA - DEN
Crew
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Thomas,Dec 2025
SEA - DEN
Crew
Food
Entertainment
Boarding
Comfort
Overall
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Entertainment
Boarding
Comfort
Overall
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Entertainment
Boarding
Comfort
Overall
Reviews
Thomas,Dec 2025
SEA - DEN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$70 | Average$169 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$98 | Average$204 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$173 | Average$388 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$222 | Average$462 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$230 | Average$312 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$256 | Average$441 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$368 | Average$511 | FlexibilityNo cancel fee | On-time71% |