Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → Seattle via Denver: arrives on time 81%
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08:15 IAD → 10:10 DENUA 792 · United · 3h 55m · 95% on time, 0.0% cancelled
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3h 50m layover in Denver (DEN) · 45 min minimum on one ticket
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14:00 DEN → 16:00 SEAUA 2164 · United · 3h 00m · 84% on time, 0.0% cancelled
Total trip 10h 45m, scheduled departure to arrival (Seattle is 3 h behind Dulles). Times are local. Both flew on 32 of the last 56 days.
Makes the connection97%The first flight arrived more than 185 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 3h 50m layover.
Arrives on time81%First flight not cancelled (0.0% are) × connection made (97%) × second flight not cancelled (0.0% are) and within 15 minutes (84%).
Total trip10h 45mIAD 08:15 to SEA 16:00, 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.