Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → Houston via Denver: arrives on time 58%
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16:57 BOS → 19:45 DENUA 800 · United · 4h 48m · 75% on time, 1.1% cancelled
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1h 25m layover in Denver (DEN) · 45 min minimum on one ticket
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21:10 DEN → 00:41 IAH +1 dayUA 1253 · United · 2h 31m · 67% on time, 1.8% cancelled
Total trip 8h 44m, scheduled departure to arrival (Houston is 1 h behind Boston). Times are local. Both flew on 41 of the last 56 days.
Makes the connection88%The first flight arrived more than 40 minutes late on 12% of the days it flew: too late for the 45-minute minimum connection on a 1h 25m layover.
Arrives on time58%First flight not cancelled (1.1% are) × connection made (88%) × second flight not cancelled (1.8% are) and within 15 minutes (67%).
Total trip8h 44mBOS 16:57 to IAH 00:41, 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.