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1,319 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: almost all depart on time. After 4 pm it’s 2 in 3.

Best time to leave 8–9 am 100% arrive on time from ONT

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

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ONT
100
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74
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66
% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.

Southwest 1,319 86% 0.1% 57 min

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.

No flight on this route ran 150+ times in the year.

All 6 flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.

WN 713 ONT 06:10 SJC 07:25 1h 15m 16 100% 0.0% –
WN 383 ONT 06:30 SJC 07:50 1h 20m 26 100% 0.0% –
WN 3162 ONT 10:50 SJC 12:00 1h 10m 34 82% 0.0% 36 min
WN 2298 ONT 12:05 SJC 13:15 1h 10m 16 88% 0.0% 96 min
WN 3845 ONT 16:35 SJC 17:45 1h 10m 57 70% 0.0% 92 min
WN 3164 ONT 19:55 SJC 21:10 1h 10m 57 65% 0.0% 50 min

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.

Southwest ONT SJC 1h 15m 86% 0.1% 1,319 Flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON