Delta Air LinesDL
live
Direct flights from Ontario (ONT) to Los Angeles (LAX): 1 nonstop departure observed each week across 1 airline. The nonstop covers 75 km, an estimated 36 minutes in the air. Measured by Pro Flight Search from live flight boards at Ontario and Los Angeles. Updated 1 November 2026 at 18:33 UTC.
ONT
Ontario
smooth · +12
LAX
Los Angeles
smooth · +0
75 km · ~0h 36m est.
Running clean · 1 airline · 1x weekly · nonstop
92 / 100
route health from live ONT and LAX delay boards
Flight time~0h 36mestimated from route distance
Weekly departures1x1 direct airline on the leg
Who flies it
observed on the boards · 7 daysAirports right now
live boardsWeather lens
Conditions are tightest at ONT and LAX: a 42% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +8 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 Los Angeles route actually runs
Pro Flight Search records official board updates for nonstop ONT to LAX 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 Los Angeles (LAX) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/ONT-LAX
ONT to LAX questions
Is ONT–LAX running on time right now?
Smooth skies ahead. The departure side at ONT is the weaker end, route health score 92/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from ONT to LAX?
Great-circle distance is 75 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 35–36 min gate-to-gate on this route.
How often does ONT–LAX fly?
Delta Air Lines runs the route with about 1 flight a week (wed). 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 ONT and arrival-side delay at LAX, 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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