Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Miami via Boston: arrives on time 91%
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21:41 ORD → 01:14 BOSUA 1779 · United · 2h 33m · 68% on time, 3.7% cancelled
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3h 56m layover in Boston (BOS) · 90 min minimum on separate tickets
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05:10 BOS → 08:38 MIA +1 dayAA 1418 · American · 3h 28m · 96% on time, 0.0% cancelled
Total trip 9h 57m, scheduled departure to arrival (Miami is 1 h ahead of Chicago). Times are local. Both flew on 51 of the last 56 days.
Makes the connection98%The first flight arrived more than 146 minutes late on 2% of the days it flew: too late for the 90-minute minimum connection on a 3h 56m layover.
Arrives on time91%First flight not cancelled (3.7% are) × connection made (98%) × second flight not cancelled (0.0% are) and within 15 minutes (96%).
Total trip9h 57mORD 21:41 to MIA 08:38, 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.