Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Juan → Houston via Dulles: arrives on time 75%
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16:55 SJU → 20:56 IADUA 2024 · United · 4h 01m · 86% on time, 0.6% cancelled
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1h 24m layover in Dulles (IAD) · 45 min minimum on one ticket
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22:20 IAD → 00:45 IAH +1 dayUA 1986 · United · 3h 25m · 81% on time, 0.0% cancelled
Total trip 8h 50m, scheduled departure to arrival (Houston is 1 h behind San Juan). Times are local. Both flew on 37 of the last 56 days.
Makes the connection93%The first flight arrived more than 39 minutes late on 7% of the days it flew: too late for the 45-minute minimum connection on a 1h 24m layover.
Arrives on time75%First flight not cancelled (0.6% are) × connection made (93%) × second flight not cancelled (0.0% are) and within 15 minutes (81%).
Total trip8h 50mSJU 16:55 to IAH 00:45, 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.