Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Seattle → Columbus via Dulles: arrives on time 77%
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23:20 SEA → 07:22 IADUA 264 · United · 5h 02m · 91% on time, 4.5% cancelled
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1h 03m layover in Dulles (IAD) · 45 min minimum on one ticket
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08:25 IAD → 09:49 CMH +1 dayUA 4076 · United, flown by Mesa · 1h 24m · 89% on time, 0.0% cancelled
Total trip 7h 29m, scheduled departure to arrival (Columbus is 3 h ahead of Seattle). Times are local. Both flew on 33 of the last 56 days.
Makes the connection91%The first flight arrived more than 18 minutes late on 9% of the days it flew: too late for the 45-minute minimum connection on a 1h 03m layover.
Arrives on time77%First flight not cancelled (4.5% are) × connection made (91%) × second flight not cancelled (0.0% are) and within 15 minutes (89%).
Total trip7h 29mSEA 23:20 to CMH 09:49, 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.