Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → St Louis via Chicago: arrives on time 70%
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10:31 IAD → 11:53 ORDUA 1252 · United · 2h 22m · 92% on time, 0.8% cancelled
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1h 02m layover in Chicago (ORD) · 45 min minimum on one ticket
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12:55 ORD → 14:23 STLUA 4581 · United, flown by GoJet · 1h 28m · 80% on time, 4.2% cancelled
Total trip 4h 52m, scheduled departure to arrival (St Louis is 1 h behind Dulles). Times are local. Both flew on 56 of the last 56 days.
Makes the connection92%The first flight arrived more than 17 minutes late on 8% of the days it flew: too late for the 45-minute minimum connection on a 1h 02m layover.
Arrives on time70%First flight not cancelled (0.8% are) × connection made (92%) × second flight not cancelled (4.2% are) and within 15 minutes (80%).
Total trip4h 52mIAD 10:31 to STL 14:23, 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.