Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Portland → Dulles via Denver: arrives on time 85%
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08:50 PDX → 12:24 DENUA 2375 · United · 2h 34m · 97% on time, 0.5% cancelled
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1h 29m layover in Denver (DEN) · 45 min minimum on one ticket
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13:53 DEN → 19:22 IADUA 347 · United · 3h 29m · 87% on time, 0.3% cancelled
Total trip 7h 32m, scheduled departure to arrival (Dulles is 3 h ahead of Portland). Times are local. Both flew on 56 of the last 56 days.
Makes the connection98%The first flight arrived more than 44 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 1h 29m layover.
Arrives on time85%First flight not cancelled (0.5% are) × connection made (98%) × second flight not cancelled (0.3% are) and within 15 minutes (87%).
Total trip7h 32mPDX 08:50 to IAD 19:22, 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.