Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Columbus via Chicago: arrives on time 56%
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12:00 SFO → 18:35 ORDUA 2317 · United · 4h 35m · 50% on time, 2.8% cancelled
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2h 55m layover in Chicago (ORD) · 45 min minimum on one ticket
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21:30 ORD → 23:59 CMHUA 1492 · United · 1h 29m · 67% on time, 3.3% cancelled
Total trip 8h 59m, scheduled departure to arrival (Columbus is 3 h ahead of San Francisco). Times are local. Both flew on 56 of the last 56 days.
Makes the connection90%The first flight arrived more than 130 minutes late on 10% of the days it flew: too late for the 45-minute minimum connection on a 2h 55m layover.
Arrives on time56%First flight not cancelled (2.8% are) × connection made (90%) × second flight not cancelled (3.3% are) and within 15 minutes (67%).
Total trip8h 59mSFO 12:00 to CMH 23:59, 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.