Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → San Francisco via Denver: arrives on time 58%
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08:40 ORD → 10:31 DENUA 526 · United · 2h 51m · 90% on time, 0.0% cancelled
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50m layover in Denver (DEN) · 45 min minimum on one ticket
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11:21 DEN → 13:04 SFOUA 1561 · United · 2h 43m · 72% on time, 0.0% cancelled
Total trip 6h 24m, scheduled departure to arrival (San Francisco is 2 h behind Chicago). Times are local. Both flew on 31 of the last 56 days.
Makes the connection81%The first flight arrived more than 5 minutes late on 19% of the days it flew: too late for the 45-minute minimum connection on a 50m layover.
Arrives on time58%First flight not cancelled (0.0% are) × connection made (81%) × second flight not cancelled (0.0% are) and within 15 minutes (72%).
Total trip6h 24mORD 08:40 to SFO 13:04, 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.