Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → St Louis via Chicago: arrives on time 86%
-
05:10 BOS → 07:04 ORDAA 3324 · American · 2h 54m · 92% on time, 2.2% cancelled
-
3h 36m layover in Chicago (ORD) · 90 min minimum on separate tickets
-
10:40 ORD → 12:11 STLUA 1355 · United · 1h 31m · 91% on time, 2.8% cancelled
Total trip 8h 01m, scheduled departure to arrival (St Louis is 1 h behind Boston). Times are local. Both flew on 56 of the last 56 days.
Makes the connection99%The first flight arrived more than 126 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 36m layover.
Arrives on time86%First flight not cancelled (2.2% are) × connection made (99%) × second flight not cancelled (2.8% are) and within 15 minutes (91%).
Total trip8h 01mBOS 05:10 to STL 12:11, 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.