Route brief · WAS → LAS
Washington → Las Vegas
$242
−42% vs typical
seasonal median $415 · difference $173
Sep 29 – Oct 7 · 8 nights
Frontier Airlines1 stop
- Usual monthly lows
- $279–$414
- Board rank
- Stronger than 91%
- Route sample
- 4 observed months
Cached fare — the booking search re-prices live before you pay.
Destination briefLASLas VegasAbsurd by design — and the closest airport to Zion, Death Valley and the Grand Canyon’s west rim.Best windowMar–May · Oct–NovAirportsHarry Reid (LAS)All routes into Las VegasWhen this route gets cheap.
Cached-fare history: across 4 months, Sep is the cheapest for WAS → LAS. Best time to be there: Mar–May · Oct–Nov.
Fares bottom out in September around $247 and peak in December near $428 — a $181 spread across the 4 months we track. The cheapest itinerary we are tracking makes one stop and takes about 6.5 hours outbound, on a 8-night trip — ticketed under Frontier Airlines, which on a connecting fare need not operate every leg. At $242 for 3,349 km each way, that works out to about $36 per 1,000 km flown. That is below the $39 typical of medium-haul fares here. Across the 5 departure cities we track at a similar distance from Las Vegas, this fare ranks 3rd — 41% above the $172 from Miami.
The 4 days we hold a cached fare for
Tap a date → live search
The median cached fare across this calendar is 2% higher than when tracking began on Aug 8 — $289 then versus $295 now, across 5 recorded snapshots. This is a calendar-level trend, so an individual deal above can be lower. The lowest single day we have seen here is $110, on Aug 22.
These are the only days we have a cached price for on this route so far — not the only days it flies. The search above covers any date.
Cheapest in Sep · around $247
40% below the $415 typical fare
Cheapest round-trip fare found per month · Washington → Las Vegas · cached-price history
Route facts
- Airports
- Dulles (IAD) · Reagan National (DCA) · Baltimore (BWI) ↔ Harry Reid (LAS)
- Flight time
- ~6.5 hours outbound
- Distance
- ~3,349 km each way
- Typical price
- $415 round-trip (seasonal median)
- Airlines on the board
- Frontier Airlines
- Itineraries
- Connections on current fares
- Best months to visit
- Mar–May · Oct–Nov
WAS → LAS, answered.
Is $242 a good price for Washington to Las Vegas?
Yes — the seasonal median for this route is around $415 round-trip. At $242 you're 42% below that, saving about $173, which we rate rare for this route.
What is the cheapest month to fly from Washington to Las Vegas?
Across 4 months of cached-fare history, Sep comes out cheapest on this route. The best months to actually be in Las Vegas are Mar–May · Oct–Nov — when those overlap, that's your window.
How far in advance should I book WAS → Las Vegas?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. What we can measure is which month is cheap: across 4 months of cached fares, Sep comes out lowest on this route. See /guides/what-moves-a-flight-price/ for what does move a fare.
Are there nonstop flights from Washington to Las Vegas?
The current cheapest fares involve a connection, ticketed under Frontier Airlines. Nonstop options exist on many dates at higher prices — check the live search for your exact dates.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on September 1). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Las Vegas?
Lock the flight first — then compare stays for Sep 29 – Oct 7 · 8 nights.
Browse hotels ↗
Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next WAS → LAS drop reaches you as soon as we find it.
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