Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → San Francisco via Denver: arrives on time 71%
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10:31 IAH → 12:07 DENUA 1409 · United · 2h 36m · 83% on time, 0.6% cancelled
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3h 40m layover in Denver (DEN) · 45 min minimum on one ticket
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15:47 DEN → 17:30 SFOUA 2633 · United · 2h 43m · 73% on time, 0.0% cancelled
Total trip 8h 59m, scheduled departure to arrival (San Francisco is 2 h behind Houston). Times are local. Both flew on 56 of the last 56 days.
Makes the connection99%The first flight arrived more than 175 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 40m layover.
Arrives on time71%First flight not cancelled (0.6% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (73%).
Total trip8h 59mIAH 10:31 to SFO 17:30, 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.