Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → St Louis via Chicago: arrives on time 33%
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19:25 BOS → 21:20 ORDAA 2837 · American · 2h 54m · 40% on time, 6.6% cancelled
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1h 14m layover in Chicago (ORD) · 45 min minimum on one ticket
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22:34 ORD → 23:51 STLAA 3069 · American · 1h 17m · 62% on time, 0.0% cancelled
Total trip 5h 26m, scheduled departure to arrival (St Louis is 1 h behind Boston). Times are local. Both flew on 0 of the last 56 days, too few to list among the best connections.
Makes the connection57%The first flight arrived more than 29 minutes late on 43% of the days it flew: too late for the 45-minute minimum connection on a 1h 14m layover.
Arrives on time33%First flight not cancelled (6.6% are) × connection made (57%) × second flight not cancelled (0.0% are) and within 15 minutes (62%).
Total trip5h 26mBOS 19:25 to STL 23:51, 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.