At IAD, check-in can be crowded in the afternoon and evening. Arrive early to navigate the busy main terminal efficiently.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $142 (CheapOair) |
One-way from | $63 (Trip.com) |
Popular in | December |
Cheapest in | August |
Average price | $385 |
Good round-trip deal | $238 or less |
Good one-way deal | $123 or less |
Fly from
Fly to
Route
Depart
Return
Price
BaltimoreLas Vegas
BWI - LAS
BWILAS
Baltimore/Washington
Fri 1/9
8:58 am-12:10 am
1 stop18h 12m
Las Vegas Harry Reid Intl
Sun 1/11
10:45 pm-8:25 pm
1 stop18h 40m
BaltimoreLas Vegas
BWI - LAS
BWILAS
Baltimore/Washington
Mon 2/2
10:05 am-5:11 pm
2 stops10h 06m
Las Vegas Harry Reid Intl
Tue 2/3
12:59 am-11:20 am
1 stop7h 21m
BaltimoreLas Vegas
BWI - LAS
BWILAS
Baltimore/Washington
Thu 1/15
8:58 am-11:58 pm
2 stops18h 00m
Las Vegas Harry Reid Intl
Mon 1/19
8:42 am-8:33 pm
1 stop8h 51m
BaltimoreLas Vegas
BWI - LAS
BWILAS
Baltimore/Washington
Fri 11/21
7:10 am-12:11 am
1 stop20h 01m
Las Vegas Harry Reid Intl
Sat 11/29
12:59 am-11:19 pm
2 stops43h 20m
Washington, D.C.Las Vegas
DCA - LAS
DCALAS
Washington, D.C. Reagan-National
Thu 1/8
8:59 am-9:00 pm
2 stops15h 01m
Las Vegas Harry Reid Intl
Fri 1/16
7:36 pm-5:56 pm
2 stops19h 20m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Tue 12/9
5:37 pm-10:27 pm
1 stop7h 50m
Las Vegas Harry Reid Intl
Sat 12/13
10:25 am-10:05 pm
1 stop8h 40m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Tue 12/16
12:19 pm-7:50 pm
1 stop10h 31m
Las Vegas Harry Reid Intl
Mon 12/22
12:35 am-9:46 am
1 stop6h 11m
BaltimoreLas Vegas
BWI - LAS
BWILAS
Baltimore/Washington
Tue 1/20
7:14 pm-9:00 pm
1 stop28h 46m
Las Vegas Harry Reid Intl
Fri 1/23
1:43 pm-6:14 pm
1 stop25h 31m
Washington, D.C.Las Vegas
IAD - LAS
IADLAS
Washington, D.C. Dulles Intl
Tue 1/6
7:33 am-3:22 pm
1 stop10h 49m
Las Vegas Harry Reid Intl
Fri 1/9
1:43 pm-5:04 pm
2 stops24h 21m
BaltimoreLas Vegas
BWI - LAS
BWILAS
Baltimore/Washington
Thu 11/13
3:58 pm-8:59 pm
2 stops56h 01m
Las Vegas Harry Reid Intl
Sun 11/16
11:59 pm-3:07 pm
1 stop12h 08m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
Booking 88 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to Las Vegas. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to Las Vegas (average of $99). Flying from Washington, D.C. to Las Vegas in December is currently the most expensive (average of $166). 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.
A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to Las Vegas in the morning. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the afternoon.
Travelers seeking maximum savings on their Washington, D.C. to Las Vegas flight should consider departing on Saturday mornings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from WAS to LAS are scheduled on a Monday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).
Denver (DEN) – chosen by Cheapflights users on 81% of 1-stop itineraries from Washington, D.C. to Las Vegas on Cheapflights.
San Diego (SAN) is the most affordable 1-stop option, with an average round-trip price of $233.
Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 7h 34m.
Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 59m.
Crew
Entertainment
Overall
Food
Boarding
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Reviews
Mike,Aug 2025
OKC - AUS
Crew
Entertainment
Overall
Food
Boarding
Comfort
Reviews
Mike,Aug 2025
OKC - AUS
Crew
Entertainment
Overall
Food
Boarding
Comfort
Reviews
Mike,Aug 2025
OKC - AUS
Crew
Entertainment
Overall
Food
Boarding
Comfort
Reviews
Mike,Aug 2025
OKC - AUS
Crew
Entertainment
Overall
Food
Boarding
Comfort
Reviews
Mike,Aug 2025
OKC - AUS
Crew
Entertainment
Overall
Food
Boarding
Comfort
Reviews
Mike,Aug 2025
OKC - AUS
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$111 | Average$259 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$120 | Average$236 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$183 | Average$379 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$220 | Average$507 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$231 | Average$308 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$240 | Average$453 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$240 | Average$482 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$253 | Average$366 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$290 | Average$375 | FlexibilityNo cancel fee | On-time83% |