Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

San Juan → Denver via Newark: arrives on time 84%

  1. 01:00 SJU → 05:10 EWR
    UA 2219 · United · 4h 10m · 85% on time, 1.1% cancelled
  2. 1h 20m layover in Newark (EWR) · 45 min minimum on one ticket
  3. 06:30 EWR → 08:45 DEN
    UA 670 · United · 4h 15m · 95% on time, 0.0% cancelled

Total trip 9h 45m, scheduled departure to arrival (Denver is 2 h behind San Juan). Times are local. Both flew on 52 of the last 56 days.

Makes the connection89%The first flight arrived more than 35 minutes late on 11% of the days it flew: too late for the 45-minute minimum connection on a 1h 20m layover.
Arrives on time84%First flight not cancelled (1.1% are) × connection made (89%) × second flight not cancelled (0.0% are) and within 15 minutes (95%).
Total trip9h 45mSJU 01:00 to DEN 08:45, 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.