Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
St Louis → Houston via Dulles: arrives on time 60%
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12:55 STL → 16:07 IADUA 4454 · United, flown by GoJet · 2h 12m · 72% on time, 1.1% cancelled
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1h 52m layover in Dulles (IAD) · 45 min minimum on one ticket
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17:59 IAD → 20:25 IAHUA 2217 · United · 3h 26m · 72% on time, 0.3% cancelled
Total trip 7h 30m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.
Makes the connection84%The first flight arrived more than 67 minutes late on 16% of the days it flew: too late for the 45-minute minimum connection on a 1h 52m layover.
Arrives on time60%First flight not cancelled (1.1% are) × connection made (84%) × second flight not cancelled (0.3% are) and within 15 minutes (72%).
Total trip7h 30mSTL 12:55 to IAH 20:25, 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.