Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Ontario → Houston via Denver: arrives on time 77%
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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 14m layover in Denver (DEN) · 45 min minimum on one ticket
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11:34 DEN → 15:09 IAHUA 1599 · United · 2h 35m · 78% on time, 0.6% cancelled
Total trip 8h 09m, scheduled departure to arrival (Houston is 2 h ahead of Ontario). Times are local. Both flew on 56 of the last 56 days.
Makes the connection99%The first flight arrived more than 149 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 14m layover.
Arrives on time77%First flight not cancelled (0.4% are) × connection made (99%) × second flight not cancelled (0.6% are) and within 15 minutes (78%).
Total trip8h 09mONT 05:00 to IAH 15:09, 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.