Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Atlanta → Houston via Dulles: arrives on time 80%
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09:25 ATL → 11:15 IADUA 632 · United · 1h 50m · 89% on time, 1.7% cancelled
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1h 35m layover in Dulles (IAD) · 45 min minimum on one ticket
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12:50 IAD → 15:11 IAHUA 1535 · United · 3h 21m · 84% on time, 0.7% cancelled
Total trip 6h 46m, scheduled departure to arrival (Houston is 1 h behind Atlanta). Times are local. Both flew on 30 of the last 56 days.
Makes the connection97%The first flight arrived more than 50 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 1h 35m layover.
Arrives on time80%First flight not cancelled (1.7% are) × connection made (97%) × second flight not cancelled (0.7% are) and within 15 minutes (84%).
Total trip6h 46mATL 09:25 to IAH 15:11, 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.