Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Detroit via Chicago: arrives on time 36%
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12:00 SFO → 18:35 ORDUA 2317 · United · 4h 35m · 50% on time, 2.8% cancelled
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1h 12m layover in Chicago (ORD) · 45 min minimum on one ticket
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19:47 ORD → 22:19 DTWUA 2426 · United · 1h 32m · 63% on time, 1.4% cancelled
Total trip 7h 19m, scheduled departure to arrival (Detroit is 3 h ahead of San Francisco). Times are local. Both flew on 56 of the last 56 days.
Makes the connection59%The first flight arrived more than 27 minutes late on 41% of the days it flew: too late for the 45-minute minimum connection on a 1h 12m layover.
Arrives on time36%First flight not cancelled (2.8% are) × connection made (59%) × second flight not cancelled (1.4% are) and within 15 minutes (63%).
Total trip7h 19mSFO 12:00 to DTW 22:19, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.