Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
St Louis → San Francisco via Chicago: arrives on time 37%
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08:00 STL → 09:35 ORDUA 4183 · United, flown by GoJet · 1h 35m · 72% on time, 0.5% cancelled
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50m layover in Chicago (ORD) · 45 min minimum on one ticket
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10:25 ORD → 13:14 SFOUA 543 · United · 4h 49m · 63% on time, 2.0% cancelled
Total trip 7h 14m, scheduled departure to arrival (San Francisco is 2 h behind St Louis). Times are local. Both flew on 37 of the last 56 days.
Makes the connection60%The first flight arrived more than 5 minutes late on 40% of the days it flew: too late for the 45-minute minimum connection on a 50m layover.
Arrives on time37%First flight not cancelled (0.5% are) × connection made (60%) × second flight not cancelled (2.0% are) and within 15 minutes (63%).
Total trip7h 14mSTL 08:00 to SFO 13:14, 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.