Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → Louisville via Chicago: arrives on time 58%
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17:00 BOS → 19:00 ORDUA 2040 · United · 3h 00m · 55% on time, 2.5% cancelled
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2h 25m layover in Chicago (ORD) · 45 min minimum on one ticket
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21:25 ORD → 23:59 SDFUA 3659 · United, flown by Republic · 1h 34m · 73% on time, 11.1% cancelled
Total trip 6h 59m, scheduled departure to arrival. Times are local. Both flew on 55 of the last 56 days.
Makes the connection92%The first flight arrived more than 100 minutes late on 8% of the days it flew: too late for the 45-minute minimum connection on a 2h 25m layover.
Arrives on time58%First flight not cancelled (2.5% are) × connection made (92%) × second flight not cancelled (11.1% are) and within 15 minutes (73%).
Total trip6h 59mBOS 17:00 to SDF 23:59, 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.