Is ONT–KOA running on time right now?
Mostly on schedule. The departure side at ONT is the weaker end, route health score 70/100. The airports section above carries the live status and delay window at both ends.
live
Direct flights from Ontario (ONT) to Kailua-Kona (KOA) run nonstop between the two airports. The nonstop covers 4,101 km, an estimated 5 hours 45 minutes in the air.
ONT
Ontario
busy · +22
KOA
Kailua-Kona
tracking
4,101 km · ~5h 45m est.
Running clean · 0 airlines · nonstop
70 / 100
route health from live ONT and KOA delay boards
Flight time~5h 45mestimated from route distance
Airports right now
live boardsWeather lens
Current conditions put the pressure at ONT and KOA: 40% odds of a 15+ minute delay, 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 Kailua-Kona route actually runs
Pro Flight Search records official board updates for nonstop ONT to KOA 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 Kailua-Kona (KOA) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/ONT-KOA
ONT to KOA questions
How long is the flight from ONT to KOA?
Great-circle distance is 4,101 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 319–382 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 KOA, 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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