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

Boston → San Juan via New York: arrives on time 33%

  1. 16:07 BOS → 17:25 JFK
    B6 317 · JetBlue · 1h 21m · 60% on time, 6.2% cancelled
  2. 1h 04m layover in New York (JFK) · 45 min minimum on one ticket
  3. 18:29 JFK → 22:45 SJU
    B6 2903 · JetBlue · 4h 16m · 60% on time, 3.2% cancelled

Total trip 6h 38m, scheduled departure to arrival. Times are local. Both flew on 47 of the last 56 days.

Makes the connection61%The first flight arrived more than 19 minutes late on 39% of the days it flew: too late for the 45-minute minimum connection on a 1h 04m layover.
Arrives on time33%First flight not cancelled (6.2% are) × connection made (61%) × second flight not cancelled (3.2% are) and within 15 minutes (60%).
Total trip6h 38mBOS 16:07 to SJU 22:45, 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.