Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → San Francisco via Denver: arrives on time 41%
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07:05 ORD → 08:55 DENUA 1217 · United · 2h 50m · 92% on time, 0.0% cancelled
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48m layover in Denver (DEN) · 45 min minimum on one ticket
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09:43 DEN → 11:25 SFOUA 1506 · United · 2h 42m · 48% on time, 0.6% cancelled
Total trip 6h 20m, scheduled departure to arrival (San Francisco is 2 h behind Chicago). Times are local. Both flew on 56 of the last 56 days.
Makes the connection87%The first flight arrived more than 3 minutes late on 13% of the days it flew: too late for the 45-minute minimum connection on a 48m layover.
Arrives on time41%First flight not cancelled (0.0% are) × connection made (87%) × second flight not cancelled (0.6% are) and within 15 minutes (48%).
Total trip6h 20mORD 07:05 to SFO 11:25, 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.