Is ONT–SAN running on time right now?
Smooth skies ahead. The departure side at ONT is the weaker end, route health score 84/100. The airports section above carries the live status and delay window at both ends.
live
Direct flights from Ontario (ONT) to San Diego (SAN) run nonstop between the two airports. The nonstop covers 152 km, an estimated 42 minutes in the air.
ONT
Ontario
busy · +18
SAN
San Diego
smooth · +4
152 km · ~0h 42m est.
Running clean · 0 airlines · nonstop
84 / 100
route health from live ONT and SAN delay boards
Flight time~0h 42mestimated from route distance
Airports right now
live boardsWeather lens
Conditions are tightest at SAN: a 54% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +18 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 Ontario to San Diego route actually runs
Pro Flight Search records official board updates for nonstop ONT to SAN 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
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Suggested citation
Pro Flight Search: Ontario (ONT) to San Diego (SAN) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/ONT-SAN
ONT to SAN questions
How long is the flight from ONT to SAN?
Great-circle distance is 152 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 41–43 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 SAN, 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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