Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
St Louis → Seattle via Denver: arrives on time 72%
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09:06 STL → 10:30 DENUA 2459 · United · 2h 24m · 92% on time, 0.0% cancelled
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52m layover in Denver (DEN) · 45 min minimum on one ticket
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11:22 DEN → 13:22 SEAUA 1424 · United · 3h 00m · 86% on time, 0.8% cancelled
Total trip 6h 16m, scheduled departure to arrival (Seattle is 2 h behind St Louis). Times are local. Both flew on 56 of the last 56 days.
Makes the connection84%The first flight arrived more than 7 minutes late on 16% of the days it flew: too late for the 45-minute minimum connection on a 52m layover.
Arrives on time72%First flight not cancelled (0.0% are) × connection made (84%) × second flight not cancelled (0.8% are) and within 15 minutes (86%).
Total trip6h 16mSTL 09:06 to SEA 13:22, 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.