Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Louisville → Boston via Dulles: arrives on time 83%
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06:00 SDF → 07:35 IADUA 3438 · United, flown by Republic · 1h 35m · 93% on time, 1.4% cancelled
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1h 00m layover in Dulles (IAD) · 45 min minimum on one ticket
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08:35 IAD → 10:20 BOSUA 641 · United · 1h 45m · 92% on time, 1.5% cancelled
Total trip 4h 20m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.
Makes the connection93%The first flight arrived more than 15 minutes late on 7% of the days it flew: too late for the 45-minute minimum connection on a 1h 00m layover.
Arrives on time83%First flight not cancelled (1.4% are) × connection made (93%) × second flight not cancelled (1.5% are) and within 15 minutes (92%).
Total trip4h 20mSDF 06:00 to BOS 10:20, 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.