Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
St Louis → Denver via Atlanta: arrives on time 88%
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06:00 STL → 08:38 ATLDL 1524 · Delta · 1h 38m · 96% on time, 1.6% cancelled
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2h 32m layover in Atlanta (ATL) · 90 min minimum on separate tickets
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11:10 ATL → 12:28 DENUA 1327 · United · 3h 18m · 91% on time, 0.0% cancelled
Total trip 7h 28m, scheduled departure to arrival (Denver is 1 h behind St Louis). Times are local. Both flew on 56 of the last 56 days.
Makes the connection99%The first flight arrived more than 62 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 2h 32m layover.
Arrives on time88%First flight not cancelled (1.6% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (91%).
Total trip7h 28mSTL 06:00 to DEN 12:28, 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.