Southwest AirlinesWN92% on time
Flights WN3272 06:00 Mo Th Fr · WN3092 08:35 Sa · WN2468 09:05 Tu We Sa · WN2956 10:55 Mo Th Fr Su
live
Direct flights from Ontario (ONT) to San Jose (SJC): 7 nonstop departures observed each week across 1 airline. 92% of the last 26 operated flights arrived within 15 minutes of schedule. The median arrival is 13 minutes early. No cancellations were recorded across the 26 tracked flights. The nonstop covers 536 km, an estimated 1 hour 11 minutes in the air. Measured by Pro Flight Search from live flight boards at Ontario and San Jose. Updated 14 September 2026 at 05:18 UTC.
ONT
Ontario
busy · +21
SJC
San Jose
smooth · +11
536 km · ~1h 11m est.
Runs reliable · 1 airline · 7x weekly · nonstop
92% on time
of the last 26 operated ONT → SJC flights arrived within 15 minutes
Median arrival delay is −13 min. 0 of 26 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−13 minacross the last 26 operated legs
Flight time~1h 11mestimated from route distance
Weekly departures7x1 direct airline on the leg
Cancelled0.0%recent route rate · 0 of 26
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Southwest Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomes09-101I363arrived+0
Actual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at ONT and SJC: 43% 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 San Jose route actually runs
Pro Flight Search records official board updates for nonstop ONT to SJC 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 San Jose (SJC) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/ONT-SJC
ONT to SJC questions
Is ONT–SJC running on time right now?
Mostly on schedule. The departure side at ONT is the weaker end, route health score 78/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on ONT–SJC?
Operators schedule morning departures around 06:00 and evening departures around 18:25 from ONT. Earlier flights typically land before destination-airport delays accumulate later in the day; check the SJC delay card to confirm conditions when you'd arrive.
How long is the flight from ONT to SJC?
Great-circle distance is 536 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 68–76 min gate-to-gate on this route.
How often does ONT–SJC fly?
Southwest Airlines runs the route with about 24 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
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