Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
St Louis → Boston via Denver: arrives on time 83%
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05:10 STL → 06:32 DENUA 362 · United · 2h 22m · 91% on time, 1.4% cancelled
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1h 13m layover in Denver (DEN) · 45 min minimum on one ticket
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07:45 DEN → 13:49 BOSUA 558 · United · 4h 04m · 91% on time, 0.6% cancelled
Total trip 7h 39m, scheduled departure to arrival (Boston is 1 h ahead of St Louis). Times are local. Both flew on 55 of the last 56 days.
Makes the connection94%The first flight arrived more than 28 minutes late on 6% of the days it flew: too late for the 45-minute minimum connection on a 1h 13m layover.
Arrives on time83%First flight not cancelled (1.4% are) × connection made (94%) × second flight not cancelled (0.6% are) and within 15 minutes (91%).
Total trip7h 39mSTL 05:10 to BOS 13:49, 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.