Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Miami → San Juan via New York: arrives on time 80%

  1. 06:00 MIA → 09:05 JFK
    AA 1040 · American · 3h 05m · 90% on time, 1.4% cancelled
  2. 3h 25m layover in New York (JFK) · 90 min minimum on separate tickets
  3. 12:30 JFK → 16:29 SJU
    DL 1961 · Delta · 3h 59m · 84% on time, 1.1% cancelled

Total trip 10h 29m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.

Makes the connection99%The first flight arrived more than 115 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 25m layover.
Arrives on time80%First flight not cancelled (1.4% are) × connection made (99%) × second flight not cancelled (1.1% are) and within 15 minutes (84%).
Total trip10h 29mMIA 06:00 to SJU 16:29, 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.