Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → San Francisco via Houston: arrives on time 80%
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08:51 ORD → 11:51 IAHUA 535 · United · 3h 00m · 80% on time, 0.0% cancelled
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3h 39m layover in Houston (IAH) · 45 min minimum on one ticket
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15:30 IAH → 17:35 SFOUA 589 · United · 4h 05m · 80% on time, 0.0% cancelled
Total trip 10h 44m, scheduled departure to arrival (San Francisco is 2 h behind Chicago). Times are local. Both flew on 55 of the last 56 days.
Makes the connection100%The first flight arrived more than 174 minutes late on 0% of the days it flew: too late for the 45-minute minimum connection on a 3h 39m layover.
Arrives on time80%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (0.0% are) and within 15 minutes (80%).
Total trip10h 44mORD 08:51 to SFO 17:35, 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.