Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Atlanta → San Juan via Dulles: arrives on time 48%
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14:41 ATL → 16:35 IADUA 1831 · United · 1h 54m · 78% on time, 0.8% cancelled
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49m layover in Dulles (IAD) · 45 min minimum on one ticket
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17:24 IAD → 21:24 SJUUA 2025 · United · 4h 00m · 73% on time, 0.4% cancelled
Total trip 6h 43m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.
Makes the connection66%The first flight arrived more than 4 minutes late on 34% of the days it flew: too late for the 45-minute minimum connection on a 49m layover.
Arrives on time48%First flight not cancelled (0.8% are) × connection made (66%) × second flight not cancelled (0.4% are) and within 15 minutes (73%).
Total trip6h 43mATL 14:41 to SJU 21:24, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.