Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → Louisville via Dulles: arrives on time 68%
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12:35 BOS → 14:43 IADUA 3413 · United, flown by Republic · 2h 08m · 85% on time, 3.7% cancelled
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2h 42m layover in Dulles (IAD) · 45 min minimum on one ticket
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17:25 IAD → 19:18 SDFUA 3538 · United, flown by Republic · 1h 53m · 77% on time, 5.4% cancelled
Total trip 6h 43m, scheduled departure to arrival. Times are local. Both flew on 27 of the last 56 days.
Makes the connection96%The first flight arrived more than 117 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 2h 42m layover.
Arrives on time68%First flight not cancelled (3.7% are) × connection made (96%) × second flight not cancelled (5.4% are) and within 15 minutes (77%).
Total trip6h 43mBOS 12:35 to SDF 19:18, 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.