Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Denver → Buffalo via Boston: arrives on time 90%
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23:59 DEN → 05:58 BOSUA 2656 · United · 3h 59m · 92% on time, 1.3% cancelled
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3h 05m layover in Boston (BOS) · 90 min minimum on separate tickets
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09:03 BOS → 10:52 BUF +1 dayAA 4666 · American, flown by Republic · 1h 49m · 94% on time, 2.8% cancelled
Total trip 8h 53m, scheduled departure to arrival (Buffalo is 2 h ahead of Denver). Times are local. Both flew on 54 of the last 56 days.
Makes the connection100%The first flight arrived more than 95 minutes late on 0% of the days it flew: too late for the 90-minute minimum connection on a 3h 05m layover.
Arrives on time90%First flight not cancelled (1.3% are) × connection made (100%) × second flight not cancelled (2.8% are) and within 15 minutes (94%).
Total trip8h 53mDEN 23:59 to BUF 10:52, 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.