Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → Louisville via Houston: arrives on time 80%
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13:37 BOS → 16:57 IAHUA 1976 · United · 4h 20m · 90% on time, 1.4% cancelled
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1h 52m layover in Houston (IAH) · 45 min minimum on one ticket
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18:49 IAH → 22:15 SDFUA 4052 · United, flown by Mesa · 2h 26m · 84% on time, 0.5% cancelled
Total trip 8h 38m, scheduled departure to arrival. Times are local. Both flew on 54 of the last 56 days.
Makes the connection96%The first flight arrived more than 67 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 1h 52m layover.
Arrives on time80%First flight not cancelled (1.4% are) × connection made (96%) × second flight not cancelled (0.5% are) and within 15 minutes (84%).
Total trip8h 38mBOS 13:37 to SDF 22:15, 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.