Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Juan → Boston via Newark: arrives on time 86%
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01:00 SJU → 05:10 EWRUA 2219 · United · 4h 10m · 85% on time, 1.1% cancelled
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3h 25m layover in Newark (EWR) · 45 min minimum on one ticket
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08:35 EWR → 09:51 BOSUA 1110 · United · 1h 16m · 91% on time, 2.8% cancelled
Total trip 8h 51m, 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 160 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 3h 25m layover.
Arrives on time86%First flight not cancelled (1.1% are) × connection made (98%) × second flight not cancelled (2.8% are) and within 15 minutes (91%).
Total trip8h 51mSJU 01:00 to BOS 09:51, 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.