Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Juan → Denver via Newark: arrives on time 48%
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13:25 SJU → 17:39 EWRUA 1173 · United · 4h 14m · 66% on time, 4.4% cancelled
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1h 10m layover in Newark (EWR) · 45 min minimum on one ticket
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18:49 EWR → 21:18 DENUA 407 · United · 4h 29m · 69% on time, 2.6% cancelled
Total trip 9h 53m, scheduled departure to arrival (Denver is 2 h behind San Juan). Times are local. Both flew on 56 of the last 56 days.
Makes the connection75%The first flight arrived more than 25 minutes late on 25% of the days it flew: too late for the 45-minute minimum connection on a 1h 10m layover.
Arrives on time48%First flight not cancelled (4.4% are) × connection made (75%) × second flight not cancelled (2.6% are) and within 15 minutes (69%).
Total trip9h 53mSJU 13:25 to DEN 21:18, 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.