Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → San Juan via Houston: arrives on time 81%
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17:45 ORD → 20:50 IAHUA 1954 · United · 3h 05m · 77% on time, 1.4% cancelled
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3h 06m layover in Houston (IAH) · 45 min minimum on one ticket
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23:56 IAH → 05:29 SJU +1 dayUA 1497 · United · 4h 33m · 86% on time, 0.7% cancelled
Total trip 10h 44m, scheduled departure to arrival (San Juan is 1 h ahead of Chicago). Times are local. Both flew on 56 of the last 56 days.
Makes the connection96%The first flight arrived more than 141 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 3h 06m layover.
Arrives on time81%First flight not cancelled (1.4% are) × connection made (96%) × second flight not cancelled (0.7% are) and within 15 minutes (86%).
Total trip10h 44mORD 17:45 to SJU 05:29, 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.