Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Juan → Buffalo via Dulles: arrives on time 71%
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16:55 SJU → 20:56 IADUA 2024 · United · 4h 01m · 86% on time, 0.6% cancelled
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1h 30m layover in Dulles (IAD) · 45 min minimum on one ticket
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22:26 IAD → 23:59 BUFUA 3516 · United, flown by Republic · 1h 33m · 84% on time, 9.5% cancelled
Total trip 7h 04m, scheduled departure to arrival. Times are local. Both flew on 32 of the last 56 days.
Makes the connection94%The first flight arrived more than 45 minutes late on 6% of the days it flew: too late for the 45-minute minimum connection on a 1h 30m layover.
Arrives on time71%First flight not cancelled (0.6% are) × connection made (94%) × second flight not cancelled (9.5% are) and within 15 minutes (84%).
Total trip7h 04mSJU 16:55 to BUF 23:59, 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.