Is PHL–ONT running on time right now?
Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.
live
Direct flights from Philadelphia (PHL) to Ontario (ONT) run nonstop between the two airports. The nonstop covers 3,783 km, an estimated 5 hours 21 minutes in the air.
PHL
Philadelphia
smooth · +0
ONT
Ontario
smooth · +0
3,783 km · ~5h 21m est.
Running clean · 0 airlines · nonstop
100 / 100
route health from live PHL and ONT delay boards
Flight time~5h 21mestimated from route distance
Airports right now
live boardsWeather lens
Conditions are tightest at PHL and ONT: a 41% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +9 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →
next sweep in 120s
How the Philadelphia to Ontario route actually runs
Pro Flight Search records official board updates for nonstop PHL to ONT 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: Philadelphia (PHL) to Ontario (ONT) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/PHL-ONT
PHL to ONT questions
How long is the flight from PHL to ONT?
Great-circle distance is 3,783 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 297–354 min gate-to-gate on this route.
What does the route health score measure?
A blend of departure-side delay at PHL and arrival-side delay at ONT, 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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