Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Seattle → Dulles via Houston: arrives on time 72%
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05:00 SEA → 11:21 IAHUA 2748 · United · 4h 21m · 89% on time, 0.0% cancelled
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52m layover in Houston (IAH) · 45 min minimum on one ticket
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12:13 IAH → 16:30 IADUA 2366 · United · 3h 17m · 82% on time, 0.3% cancelled
Total trip 8h 30m, scheduled departure to arrival (Dulles is 3 h ahead of Seattle). Times are local. Both flew on 50 of the last 56 days.
Makes the connection88%The first flight arrived more than 7 minutes late on 12% of the days it flew: too late for the 45-minute minimum connection on a 52m layover.
Arrives on time72%First flight not cancelled (0.0% are) × connection made (88%) × second flight not cancelled (0.3% are) and within 15 minutes (82%).
Total trip8h 30mSEA 05:00 to IAD 16:30, 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.