Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Juan → Atlanta via Boston: arrives on time 64%
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14:05 SJU → 18:14 BOSDL 1780 · Delta · 4h 09m · 80% on time, 0.9% cancelled
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1h 01m layover in Boston (BOS) · 45 min minimum on one ticket
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19:15 BOS → 22:19 ATLDL 973 · Delta · 3h 04m · 81% on time, 2.5% cancelled
Total trip 8h 14m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.
Makes the connection81%The first flight arrived more than 16 minutes late on 19% of the days it flew: too late for the 45-minute minimum connection on a 1h 01m layover.
Arrives on time64%First flight not cancelled (0.9% are) × connection made (81%) × second flight not cancelled (2.5% are) and within 15 minutes (81%).
Total trip8h 14mSJU 14:05 to ATL 22:19, 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.