Southwest AirlinesWN
Flights WN322 15:05 Su
live
Direct flights from Islip (ISP) to Las Vegas (LAS): 1 nonstop departure observed each week across 1 airline. The nonstop covers 3,665 km, an estimated 5 hours 12 minutes in the air. Measured by Pro Flight Search from live flight boards at Islip and Las Vegas. Updated 5 October 2026 at 06:22 UTC.
ISP
Islip
tracking
LAS
Las Vegas
disrupted · +72
3,665 km · ~5h 12m est.
Disrupted · 1 airline · 1x weekly · nonstop
4 / 100
route health from live ISP and LAS delay boards
Flight time~5h 12mestimated from route distance
Weekly departures1x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Southwest Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysAirports right now
live boardsnext sweep in 120s
How the Islip to Las Vegas route actually runs
Pro Flight Search records official board updates for nonstop ISP to LAS flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Islip (ISP) to Las Vegas (LAS) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/ISP-LAS
ISP to LAS questions
Is ISP–LAS running on time right now?
High disruption likely. The arrival side at LAS is the weaker end, route health score 4/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from ISP to LAS?
Great-circle distance is 3,665 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 289–344 min gate-to-gate on this route.
How often does ISP–LAS fly?
Southwest Airlines runs the route with about 1 flight a week (sun). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at ISP and arrival-side delay at LAS, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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