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

Boston → San Juan via Atlanta: arrives on time 77%

  1. 06:00 BOS → 09:06 ATL
    F9 3085 · Frontier · 3h 06m · 65% on time, 4.3% cancelled
  2. 4h 00m 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 10h 46m, scheduled departure to arrival. Times are local. Both flew on 30 of the last 56 days.

Makes the connection99%The first flight arrived more than 150 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 4h 00m layover.
Arrives on time77%First flight not cancelled (4.3% are) × connection made (99%) × second flight not cancelled (0.5% are) and within 15 minutes (82%).
Total trip10h 46mBOS 06:00 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.