Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → St Louis via Chicago: arrives on time 89%
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00:50 SFO → 07:16 ORDUA 1850 · United · 4h 26m · 86% on time, 0.0% cancelled
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3h 24m layover in Chicago (ORD) · 45 min minimum on one ticket
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10:40 ORD → 12:11 STLUA 1355 · United · 1h 31m · 91% on time, 2.8% cancelled
Total trip 9h 21m, scheduled departure to arrival (St Louis is 2 h ahead of San Francisco). Times are local. Both flew on 37 of the last 56 days.
Makes the connection100%The first flight arrived more than 159 minutes late on 0% of the days it flew: too late for the 45-minute minimum connection on a 3h 24m layover.
Arrives on time89%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (2.8% are) and within 15 minutes (91%).
Total trip9h 21mSFO 00:50 to STL 12:11, 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.