Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Louisville → Boston via Chicago: arrives on time 39%
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17:50 SDF → 18:40 ORDUA 5929 · United, flown by SkyWest · 1h 50m · 59% on time, 8.1% cancelled
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1h 05m layover in Chicago (ORD) · 45 min minimum on one ticket
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19:45 ORD → 23:21 BOSUA 1032 · United · 2h 36m · 60% on time, 2.8% cancelled
Total trip 5h 31m, scheduled departure to arrival. Times are local. Both flew on 36 of the last 56 days.
Makes the connection74%The first flight arrived more than 20 minutes late on 26% of the days it flew: too late for the 45-minute minimum connection on a 1h 05m layover.
Arrives on time39%First flight not cancelled (8.1% are) × connection made (74%) × second flight not cancelled (2.8% are) and within 15 minutes (60%).
Total trip5h 31mSDF 17:50 to BOS 23:21, 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.