Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Ontario → San Francisco via Denver: arrives on time 71%
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05:00 ONT → 08:20 DENUA 2446 · United · 2h 20m · 94% on time, 0.4% cancelled
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3h 01m layover in Denver (DEN) · 45 min minimum on one ticket
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11:21 DEN → 13:04 SFOUA 1561 · United · 2h 43m · 72% on time, 0.0% cancelled
Total trip 8h 04m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.
Makes the connection99%The first flight arrived more than 136 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 01m layover.
Arrives on time71%First flight not cancelled (0.4% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (72%).
Total trip8h 04mONT 05:00 to SFO 13:04, layover included
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.