Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → San Juan via Dulles: arrives on time 80%
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05:45 BOS → 07:23 IADUA 1734 · United · 1h 38m · 97% on time, 2.3% cancelled
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1h 11m layover in Dulles (IAD) · 45 min minimum on one ticket
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08:34 IAD → 12:34 SJUUA 2021 · United · 4h 00m · 85% on time, 0.6% cancelled
Total trip 6h 49m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.
Makes the connection98%The first flight arrived more than 26 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 1h 11m layover.
Arrives on time80%First flight not cancelled (2.3% are) × connection made (98%) × second flight not cancelled (0.6% are) and within 15 minutes (85%).
Total trip6h 49mBOS 05:45 to SJU 12:34, 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.