Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Denver → San Francisco via Houston: arrives on time 71%
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05:00 DEN → 08:32 IAHUA 320 · United · 2h 32m · 97% on time, 0.5% cancelled
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1h 03m layover in Houston (IAH) · 45 min minimum on one ticket
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09:35 IAH → 11:35 SFOUA 2358 · United · 4h 00m · 74% on time, 1.4% cancelled
Total trip 7h 35m, scheduled departure to arrival (San Francisco is 1 h behind Denver). Times are local. Both flew on 56 of the last 56 days.
Makes the connection98%The first flight arrived more than 18 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 1h 03m layover.
Arrives on time71%First flight not cancelled (0.5% are) × connection made (98%) × second flight not cancelled (1.4% are) and within 15 minutes (74%).
Total trip7h 35mDEN 05:00 to SFO 11:35, 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.