Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
St Louis → San Francisco via Chicago: arrives on time 46%
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19:05 STL → 20:39 ORDUA 4165 · United, flown by GoJet · 1h 34m · 70% on time, 5.7% cancelled
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56m layover in Chicago (ORD) · 45 min minimum on one ticket
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21:35 ORD → 00:32 SFO +1 dayUA 2106 · United · 4h 57m · 78% on time, 2.5% cancelled
Total trip 7h 27m, scheduled departure to arrival (San Francisco is 2 h behind St Louis). Times are local. Both flew on 35 of the last 56 days.
Makes the connection65%The first flight arrived more than 11 minutes late on 35% of the days it flew: too late for the 45-minute minimum connection on a 56m layover.
Arrives on time46%First flight not cancelled (5.7% are) × connection made (65%) × second flight not cancelled (2.5% are) and within 15 minutes (78%).
Total trip7h 27mSTL 19:05 to SFO 00:32, 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.