Expect long security queues at IAD, especially in the afternoon. Plan extra time to navigate the terminals efficiently.
Round-trip from | $156 (Cheapflightsfares) |
---|---|
One-way from | $80 (United Airlines) |
Popular in | December |
Cheapest in | July |
Average price | $259 |
Good round-trip deal | $196 or less |
Good one-way deal | $126 or less |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Sat 7/26
7:30 am-9:29 am
Nonstop4h 59m
Las Vegas Harry Reid Intl
Sat 8/2
11:00 pm-6:34 am
Nonstop4h 34m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Mon 9/1
7:59 pm-9:58 pm
Nonstop4h 59m
Las Vegas Harry Reid Intl
Thu 9/4
1:15 pm-8:51 pm
Nonstop4h 36m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Mon 9/1
5:52 pm-11:26 pm
1 stop8h 34m
Las Vegas Harry Reid Intl
Thu 9/4
5:14 pm-4:52 pm
1 stop20h 38m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Sat 8/23
7:59 pm-9:58 pm
Nonstop4h 59m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Wed 7/30
7:30 am-9:29 am
Nonstop4h 59m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Mon 9/15
5:52 pm-11:26 pm
1 stop8h 34m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Tue 9/9
5:52 pm-9:37 am
1 stop18h 45m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Sat 8/2
5:23 pm-9:40 pm
1 stop7h 17m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Thu 8/21
5:40 pm-9:48 am
2 stops19h 08m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Sun 10/12
12:46 pm-10:46 pm
1 stop13h 00m
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 53 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Las Vegas (average of $198). Flying from Washington, D.C. Dulles Intl Airport to Las Vegas in March is currently the most expensive (average of $269). 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 in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 20% on airfare.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Las Vegas flight should consider departing on Tuesday mornings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from IAD to LAS are scheduled on a Monday (7 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (3 on average).
Overall
Comfort
Food
Crew
Boarding
Entertainment
Reviews
Anonymous,Jul 2025
EUG - SEA
Overall
Comfort
Food
Crew
Boarding
Entertainment
Reviews
Anonymous,Jul 2025
EUG - SEA
Overall
Comfort
Food
Crew
Boarding
Entertainment
Reviews
Anonymous,Jul 2025
EUG - SEA
Overall
Comfort
Food
Crew
Boarding
Entertainment
Reviews
Anonymous,Jul 2025
EUG - SEA
Overall
Comfort
Food
Crew
Boarding
Entertainment
Reviews
Anonymous,Jul 2025
EUG - SEA
Overall
Comfort
Food
Crew
Boarding
Entertainment
Reviews
Anonymous,Jul 2025
EUG - SEA
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Cheapest$118 | Average$199 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$161 | Average$308 | FlexibilityNo cancel fee | On-time65% | |
Cheapest$256 | Average$342 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$256 | Average$473 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$256 | Average$500 | FlexibilityNo cancel fee | On-time63% | |
Cheapest$257 | Average$315 | FlexibilityNo cancel fee | On-time75% | |
Cheapest$323 | Average$370 | FlexibilityNo cancel fee | On-time83% | |
Cheapest$368 | Average$523 | FlexibilityNo cancel fee | On-time71% |