Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Atlanta → Houston via Dulles: arrives on time 85%
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05:30 ATL → 07:20 IADUA 641 · United · 1h 50m · 96% on time, 1.0% cancelled
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1h 20m layover in Dulles (IAD) · 45 min minimum on one ticket
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08:40 IAD → 10:59 IAHUA 1524 · United · 3h 19m · 89% on time, 0.6% cancelled
Total trip 6h 29m, scheduled departure to arrival (Houston is 1 h behind Atlanta). Times are local. Both flew on 56 of the last 56 days.
Makes the connection98%The first flight arrived more than 35 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 1h 20m layover.
Arrives on time85%First flight not cancelled (1.0% are) × connection made (98%) × second flight not cancelled (0.6% are) and within 15 minutes (89%).
Total trip6h 29mATL 05:30 to IAH 10:59, 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.