Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Rochester via Boston: arrives on time 70%
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09:15 ORD → 12:57 BOSUA 1117 · United · 2h 42m · 87% on time, 0.0% cancelled
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3h 22m layover in Boston (BOS) · 90 min minimum on separate tickets
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16:19 BOS → 17:57 ROCAA 4709 · American, flown by Republic · 1h 38m · 76% on time, 4.3% cancelled
Total trip 7h 42m, scheduled departure to arrival (Rochester is 1 h ahead of Chicago). Times are local. Both flew on 48 of the last 56 days.
Makes the connection97%The first flight arrived more than 112 minutes late on 3% of the days it flew: too late for the 90-minute minimum connection on a 3h 22m layover.
Arrives on time70%First flight not cancelled (0.0% are) × connection made (97%) × second flight not cancelled (4.3% are) and within 15 minutes (76%).
Total trip7h 42mORD 09:15 to ROC 17:57, 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.