Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → St Louis via Denver: arrives on time 84%
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10:13 IAD → 12:05 DENUA 1865 · United · 3h 52m · 93% on time, 0.0% cancelled
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1h 20m layover in Denver (DEN) · 45 min minimum on one ticket
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13:25 DEN → 16:33 STLUA 1639 · United · 2h 08m · 87% on time, 0.0% cancelled
Total trip 7h 20m, scheduled departure to arrival (St Louis is 1 h behind Dulles). Times are local. Both flew on 55 of the last 56 days.
Makes the connection96%The first flight arrived more than 35 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 1h 20m layover.
Arrives on time84%First flight not cancelled (0.0% are) × connection made (96%) × second flight not cancelled (0.0% are) and within 15 minutes (87%).
Total trip7h 20mIAD 10:13 to STL 16:33, 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.