Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Portland → Dulles via Houston: arrives on time 73%
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23:59 PDX → 06:05 IAHUA 780 · United · 4h 06m · 76% on time, 0.0% cancelled
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1h 15m layover in Houston (IAH) · 45 min minimum on one ticket
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07:20 IAH → 11:28 IAD +1 dayUA 1549 · United · 3h 08m · 92% on time, 0.6% cancelled
Total trip 8h 29m, scheduled departure to arrival (Dulles is 3 h ahead of Portland). Times are local. Both flew on 46 of the last 56 days.
Makes the connection80%The first flight arrived more than 30 minutes late on 20% of the days it flew: too late for the 45-minute minimum connection on a 1h 15m layover.
Arrives on time73%First flight not cancelled (0.0% are) × connection made (80%) × second flight not cancelled (0.6% are) and within 15 minutes (92%).
Total trip8h 29mPDX 23:59 to IAD 11:28, 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.