Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → San Diego via San Francisco: arrives on time 66%
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06:10 ORD → 08:47 SFOUA 246 · United · 4h 37m · 93% on time, 0.7% cancelled
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1h 18m layover in San Francisco (SFO) · 45 min minimum on one ticket
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10:05 SFO → 11:51 SANUA 2177 · United · 1h 46m · 68% on time, 0.0% cancelled
Total trip 7h 41m, scheduled departure to arrival (San Diego is 2 h behind Chicago). Times are local. Both flew on 56 of the last 56 days.
Makes the connection97%The first flight arrived more than 33 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 1h 18m layover.
Arrives on time66%First flight not cancelled (0.7% are) × connection made (97%) × second flight not cancelled (0.0% are) and within 15 minutes (68%).
Total trip7h 41mORD 06:10 to SAN 11:51, 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.