Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Miami via Boston: arrives on time 35%
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10:50 ORD → 14:20 BOSAA 1563 · American · 2h 38m · 58% on time, 1.4% cancelled
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55m layover in Boston (BOS) · 45 min minimum on one ticket
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15:15 BOS → 18:58 MIAAA 1565 · American · 3h 43m · 69% on time, 1.4% cancelled
Total trip 7h 08m, scheduled departure to arrival (Miami is 1 h ahead of Chicago). Times are local. Both flew on 56 of the last 56 days.
Makes the connection52%The first flight arrived more than 10 minutes late on 48% of the days it flew: too late for the 45-minute minimum connection on a 55m layover.
Arrives on time35%First flight not cancelled (1.4% are) × connection made (52%) × second flight not cancelled (1.4% are) and within 15 minutes (69%).
Total trip7h 08mORD 10:50 to MIA 18:58, 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.