Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Juan → Buffalo via Dulles: arrives on time 79%
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07:20 SJU → 11:21 IADUA 2022 · United · 4h 01m · 96% on time, 0.7% cancelled
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1h 38m layover in Dulles (IAD) · 45 min minimum on one ticket
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12:59 IAD → 14:25 BUFUA 4335 · United, flown by CommuteAir · 1h 26m · 82% on time, 2.6% cancelled
Total trip 7h 05m, scheduled departure to arrival. Times are local. Both flew on 37 of the last 56 days.
Makes the connection99%The first flight arrived more than 53 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 1h 38m layover.
Arrives on time79%First flight not cancelled (0.7% are) × connection made (99%) × second flight not cancelled (2.6% are) and within 15 minutes (82%).
Total trip7h 05mSJU 07:20 to BUF 14:25, 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.