Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → San Juan via Houston: arrives on time 77%
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05:47 BOS → 08:50 IAHUA 1409 · United · 4h 03m · 92% on time, 0.0% cancelled
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1h 13m layover in Houston (IAH) · 45 min minimum on one ticket
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10:03 IAH → 15:42 SJUUA 1192 · United · 4h 39m · 79% on time, 0.3% cancelled
Total trip 9h 55m, scheduled departure to arrival. Times are local. Both flew on 42 of the last 56 days.
Makes the connection98%The first flight arrived more than 28 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 1h 13m layover.
Arrives on time77%First flight not cancelled (0.0% are) × connection made (98%) × second flight not cancelled (0.3% are) and within 15 minutes (79%).
Total trip9h 55mBOS 05:47 to SJU 15:42, 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.