Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Portland → Houston via Dulles: arrives on time 82%
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23:30 PDX → 07:32 IADUA 498 · United · 5h 02m · 92% on time, 2.7% cancelled
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1h 08m layover in Dulles (IAD) · 45 min minimum on one ticket
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08:40 IAD → 10:59 IAH +1 dayUA 1524 · United · 3h 19m · 89% on time, 0.6% cancelled
Total trip 9h 29m, scheduled departure to arrival (Houston is 2 h ahead of Portland). Times are local. Both flew on 36 of the last 56 days.
Makes the connection96%The first flight arrived more than 23 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 1h 08m layover.
Arrives on time82%First flight not cancelled (2.7% are) × connection made (96%) × second flight not cancelled (0.6% are) and within 15 minutes (89%).
Total trip9h 29mPDX 23:30 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.