Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Juan → Boston via Newark: arrives on time 78%
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01:00 SJU → 05:10 EWRUA 2219 · United · 4h 10m · 85% on time, 1.1% cancelled
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1h 50m layover in Newark (EWR) · 45 min minimum on one ticket
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07:00 EWR → 08:17 BOSUA 593 · United · 1h 17m · 86% on time, 1.0% cancelled
Total trip 7h 17m, scheduled departure to arrival. Times are local. Both flew on 40 of the last 56 days.
Makes the connection92%The first flight arrived more than 65 minutes late on 8% of the days it flew: too late for the 45-minute minimum connection on a 1h 50m layover.
Arrives on time78%First flight not cancelled (1.1% are) × connection made (92%) × second flight not cancelled (1.0% are) and within 15 minutes (86%).
Total trip7h 17mSJU 01:00 to BOS 08:17, 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.