Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Columbus → San Francisco via Houston: arrives on time 77%
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17:01 CMH → 19:04 IAHUA 4074 · United, flown by Mesa · 3h 03m · 76% on time, 0.0% cancelled
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2h 55m layover in Houston (IAH) · 45 min minimum on one ticket
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21:59 IAH → 00:05 SFO +1 dayUA 1609 · United · 4h 06m · 80% on time, 1.2% cancelled
Total trip 10h 04m, scheduled departure to arrival (San Francisco is 3 h behind Columbus). Times are local. Both flew on 34 of the last 56 days.
Makes the connection97%The first flight arrived more than 130 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 2h 55m layover.
Arrives on time77%First flight not cancelled (0.0% are) × connection made (97%) × second flight not cancelled (1.2% are) and within 15 minutes (80%).
Total trip10h 04mCMH 17:01 to SFO 00:05, 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.