Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → Detroit via Chicago: arrives on time 22%
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17:00 BOS → 19:00 ORDUA 2040 · United · 3h 00m · 55% on time, 2.5% cancelled
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47m layover in Chicago (ORD) · 45 min minimum on one ticket
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19:47 ORD → 22:19 DTWUA 2426 · United · 1h 32m · 63% on time, 1.4% cancelled
Total trip 5h 19m, scheduled departure to arrival. Times are local. Both flew on 55 of the last 56 days.
Makes the connection37%The first flight arrived more than 2 minutes late on 63% of the days it flew: too late for the 45-minute minimum connection on a 47m layover.
Arrives on time22%First flight not cancelled (2.5% are) × connection made (37%) × second flight not cancelled (1.4% are) and within 15 minutes (63%).
Total trip5h 19mBOS 17:00 to DTW 22:19, 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.