Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
St Louis → Dulles via Denver: arrives on time 35%
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16:48 STL → 18:23 DENUA 1483 · United · 2h 35m · 56% on time, 0.0% cancelled
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50m layover in Denver (DEN) · 45 min minimum on one ticket
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19:13 DEN → 00:45 IAD +1 dayUA 1412 · United · 3h 32m · 73% on time, 0.0% cancelled
Total trip 6h 57m, scheduled departure to arrival (Dulles is 1 h ahead of St Louis). Times are local. Both flew on 22 of the last 56 days.
Makes the connection49%The first flight arrived more than 5 minutes late on 51% of the days it flew: too late for the 45-minute minimum connection on a 50m layover.
Arrives on time35%First flight not cancelled (0.0% are) × connection made (49%) × second flight not cancelled (0.0% are) and within 15 minutes (73%).
Total trip6h 57mSTL 16:48 to IAD 00:45, 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.