Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
St Louis → San Diego via Houston: arrives on time 81%
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06:00 STL → 08:26 IAHUA 1371 · United · 2h 19m · 83% on time, 0.8% cancelled
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3h 34m layover in Houston (IAH) · 45 min minimum on one ticket
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12:00 IAH → 13:21 SANUA 2399 · United · 3h 21m · 83% on time, 0.0% cancelled
Total trip 9h 21m, scheduled departure to arrival (San Diego 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 connection99%The first flight arrived more than 169 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 34m layover.
Arrives on time81%First flight not cancelled (0.8% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (83%).
Total trip9h 21mSTL 06:00 to SAN 13:21, 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.