Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → Louisville via Houston: arrives on time 74%
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12:50 IAD → 15:11 IAHUA 1535 · United · 3h 21m · 84% on time, 0.7% cancelled
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1h 24m layover in Houston (IAH) · 45 min minimum on one ticket
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16:35 IAH → 20:01 SDFUA 4050 · United, flown by Mesa · 2h 26m · 84% on time, 2.7% cancelled
Total trip 7h 11m, scheduled departure to arrival. Times are local. Both flew on 55 of the last 56 days.
Makes the connection91%The first flight arrived more than 39 minutes late on 9% of the days it flew: too late for the 45-minute minimum connection on a 1h 24m layover.
Arrives on time74%First flight not cancelled (0.7% are) × connection made (91%) × second flight not cancelled (2.7% are) and within 15 minutes (84%).
Total trip7h 11mIAD 12:50 to SDF 20:01, 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.