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

Boston → San Juan via Atlanta: arrives on time 75%

  1. 09:05 BOS → 11:49 ATL
    DL 456 · Delta · 2h 44m · 90% on time, 2.2% cancelled
  2. 1h 17m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 13:06 ATL → 16:46 SJU
    DL 1946 · Delta · 3h 40m · 82% on time, 0.5% cancelled

Total trip 7h 41m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.

Makes the connection94%The first flight arrived more than 32 minutes late on 6% of the days it flew: too late for the 45-minute minimum connection on a 1h 17m layover.
Arrives on time75%First flight not cancelled (2.2% are) × connection made (94%) × second flight not cancelled (0.5% are) and within 15 minutes (82%).
Total trip7h 41mBOS 09:05 to SJU 16:46, 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.