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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13:01 BOS → 15:10 ORDAA 4386 · American, flown by Republic · 3h 09m · 80% on time, 4.2% cancelled
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52m layover in Chicago (ORD) · 45 min minimum on one ticket
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16:02 ORD → 18:36 SDFAA 4668 · American, flown by Republic · 1h 36m · 86% on time, 5.7% cancelled
Total trip 5h 37m, scheduled departure to arrival. Times are local. Both flew on 54 of the last 56 days.
Makes the connection74%The first flight arrived more than 7 minutes late on 26% of the days it flew: too late for the 45-minute minimum connection on a 52m layover.
Arrives on time58%First flight not cancelled (4.2% are) × connection made (74%) × second flight not cancelled (5.7% are) and within 15 minutes (86%).
Total trip5h 37mBOS 13:01 to SDF 18:36, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.