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

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

  1. 09:05 BOS → 10:24 JFK
    DL 5720 · Delta, flown by Republic · 1h 19m · 87% on time, 2.2% cancelled
  2. 2h 06m layover in New York (JFK) · 45 min minimum on one ticket
  3. 12:30 JFK → 16:29 SJU
    DL 1961 · Delta · 3h 59m · 84% on time, 1.1% cancelled

Total trip 7h 24m, 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 81 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 2h 06m layover.
Arrives on time80%First flight not cancelled (2.2% are) × connection made (98%) × second flight not cancelled (1.1% are) and within 15 minutes (84%).
Total trip7h 24mBOS 09:05 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.