Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → Buffalo via Chicago: arrives on time 79%
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10:31 IAD → 11:53 ORDUA 1252 · United · 2h 22m · 92% on time, 0.8% cancelled
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2h 02m layover in Chicago (ORD) · 45 min minimum on one ticket
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13:55 ORD → 16:41 BUFUA 2226 · United · 1h 46m · 82% on time, 0.0% cancelled
Total trip 6h 10m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.
Makes the connection98%The first flight arrived more than 77 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 2h 02m layover.
Arrives on time79%First flight not cancelled (0.8% are) × connection made (98%) × second flight not cancelled (0.0% are) and within 15 minutes (82%).
Total trip6h 10mIAD 10:31 to BUF 16:41, 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.