Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Buffalo → San Juan via Chicago: arrives on time 58%
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07:00 BUF → 07:59 ORDUA 543 · United · 1h 59m · 85% on time, 2.8% cancelled
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50m layover in Chicago (ORD) · 45 min minimum on one ticket
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08:49 ORD → 14:44 SJUUA 1996 · United · 4h 55m · 81% on time, 0.3% cancelled
Total trip 7h 44m, scheduled departure to arrival. Times are local. Both flew on 27 of the last 56 days.
Makes the connection74%The first flight arrived more than 5 minutes late on 26% of the days it flew: too late for the 45-minute minimum connection on a 50m layover.
Arrives on time58%First flight not cancelled (2.8% are) × connection made (74%) × second flight not cancelled (0.3% are) and within 15 minutes (81%).
Total trip7h 44mBUF 07:00 to SJU 14:44, 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.