Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Portland → Washington via Houston: arrives on time 77%
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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 25m layover in Houston (IAH) · 45 min minimum on one ticket
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07:30 IAH → 11:35 DCA +1 dayUA 512 · United · 3h 00m · 95% on time, 1.3% cancelled
Total trip 8h 31m, scheduled departure to arrival (Washington is 3 h ahead of Portland). Times are local. Both flew on 0 of the last 56 days, too few to list among the best connections.
Makes the connection81%The first flight arrived more than 40 minutes late on 19% of the days it flew: too late for the 45-minute minimum connection on a 1h 25m layover.
Arrives on time77%First flight not cancelled (0.0% are) × connection made (81%) × second flight not cancelled (1.3% are) and within 15 minutes (95%).
Total trip8h 31mPDX 23:59 to DCA 11:35, 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.