Is ONT–LGA running on time right now?
Some delays possible. The arrival side at LGA is the weaker end, route health score 55/100. The airports section above carries the live status and delay window at both ends.
live
Direct flights from Ontario (ONT) to New York (LGA) run nonstop between the two airports. The nonstop covers 3,892 km, an estimated 5 hours 29 minutes in the air.
ONT
Ontario
busy · +17
LGA
New York
heavy · +51
3,892 km · ~5h 29m est.
Under pressure · 0 airlines · nonstop
55 / 100
route health from live ONT and LGA delay boards
Flight time~5h 29mestimated from route distance
Airports right now
live boardsWeather lens
Current conditions put the pressure at ONT and LGA: 41% odds of a 15+ minute delay and around +8 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Ontario to New York route actually runs
Pro Flight Search records official board updates for nonstop ONT to LGA 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 — Ontario (ONT) to New York (LGA) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/ONT-LGA
ONT to LGA questions
How long is the flight from ONT to LGA?
Great-circle distance is 3,892 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 305–364 min gate-to-gate on this route.
What does the route health score measure?
A blend of departure-side delay at ONT and arrival-side delay at LGA, 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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