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

Houston → San Juan via Atlanta: arrives on time 49%

  1. 14:43 IAH → 17:54 ATL
    DL 1572 · Delta · 2h 13m · 80% on time, 1.3% cancelled
  2. 51m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 18:45 ATL → 22:29 SJU
    DL 1861 · Delta · 3h 44m · 67% on time, 1.7% cancelled

Total trip 6h 46m, scheduled departure to arrival (San Juan is 1 h ahead of Houston). Times are local. Both flew on 56 of the last 56 days.

Makes the connection75%The first flight arrived more than 6 minutes late on 25% of the days it flew: too late for the 45-minute minimum connection on a 51m layover.
Arrives on time49%First flight not cancelled (1.3% are) × connection made (75%) × second flight not cancelled (1.7% are) and within 15 minutes (67%).
Total trip6h 46mIAH 14:43 to SJU 22:29, 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.