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

San Juan → Buffalo via Detroit: arrives on time 71%

  1. 14:14 SJU → 18:53 DTW
    DL 1913 · Delta · 4h 39m · 86% on time, 1.6% cancelled
  2. 3h 57m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 22:50 DTW → 23:58 BUF
    DL 978 · Delta · 1h 09m · 74% on time, 1.4% cancelled

Total trip 9h 45m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.

Makes the connection100%The first flight arrived more than 192 minutes late on <1% of the days it flew: too late for the 45-minute minimum connection on a 3h 57m layover.
Arrives on time71%First flight not cancelled (1.6% are) × connection made (100%) × second flight not cancelled (1.4% are) and within 15 minutes (74%).
Total trip9h 45mSJU 14:14 to BUF 23:58, 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.