Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Denver → San Juan via Newark: arrives on time 48%
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12:40 DEN → 18:35 EWRUA 1283 · United · 3h 55m · 71% on time, 2.3% cancelled
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1h 10m layover in Newark (EWR) · 45 min minimum on one ticket
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19:45 EWR → 23:50 SJUUA 1543 · United · 4h 05m · 67% on time, 1.4% cancelled
Total trip 9h 10m, scheduled departure to arrival (San Juan is 2 h ahead of Denver). 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 (2.3% are) × connection made (75%) × second flight not cancelled (1.4% are) and within 15 minutes (67%).
Total trip9h 10mDEN 12:40 to SJU 23:50, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.