Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
St Louis → San Francisco via Houston: arrives on time 77%
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06:00 STL → 08:26 IAHUA 1371 · United · 2h 19m · 83% on time, 0.8% cancelled
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4h 32m layover in Houston (IAH) · 45 min minimum on one ticket
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12:58 IAH → 15:03 SFOUA 2611 · United · 4h 05m · 78% on time, 0.0% cancelled
Total trip 11h 03m, scheduled departure to arrival (San Francisco is 2 h behind St Louis). Times are local. Both flew on 0 of the last 56 days, too few to list among the best connections.
Makes the connection100%The first flight arrived more than 227 minutes late on <1% of the days it flew: too late for the 45-minute minimum connection on a 4h 32m layover.
Arrives on time77%First flight not cancelled (0.8% are) × connection made (100%) × second flight not cancelled (0.0% are) and within 15 minutes (78%).
Total trip11h 03mSTL 06:00 to SFO 15:03, 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.