tailodds FORECAST
Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Dulles → San Juan via Atlanta: arrives on time 79%

  1. 08:15 IAD → 10:14 ATL
    UA 2739 · United · 1h 59m · 89% on time, 0.4% cancelled
  2. 2h 52m layover in Atlanta (ATL) · 90 min minimum on separate tickets
  3. 13:06 ATL → 16:46 SJU
    DL 1946 · Delta · 3h 40m · 82% on time, 0.5% cancelled

Total trip 8h 31m, scheduled departure to arrival. Times are local. Both flew on 31 of the last 56 days.

Makes the connection97%The first flight arrived more than 82 minutes late on 3% of the days it flew: too late for the 90-minute minimum connection on a 2h 52m layover.
Arrives on time79%First flight not cancelled (0.4% are) × connection made (97%) × second flight not cancelled (0.5% are) and within 15 minutes (82%).
Total trip8h 31mIAD 08:15 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.