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

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

  1. 07:30 SJU → 11:20 ATL
    DL 1763 · Delta · 3h 50m · 96% on time, 1.1% cancelled
  2. 3h 39m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 14:59 ATL → 16:47 IAD
    DL 1695 · Delta · 1h 48m · 78% on time, 2.3% cancelled

Total trip 9h 17m, scheduled departure to arrival. Times are local. Both flew on 48 of the last 56 days.

Makes the connection99%The first flight arrived more than 174 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 39m layover.
Arrives on time75%First flight not cancelled (1.1% are) × connection made (99%) × second flight not cancelled (2.3% are) and within 15 minutes (78%).
Total trip9h 17mSJU 07:30 to IAD 16:47, 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.