Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Greensboro → Detroit via Dulles: arrives on time 85%
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06:15 GSO → 07:33 IADUA 4251 · United, flown by CommuteAir · 1h 18m · 91% on time, 0.7% cancelled
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3h 37m layover in Dulles (IAD) · 90 min minimum on separate tickets
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11:10 IAD → 12:44 DTWDL 2884 · Delta · 1h 34m · 90% on time, 0.0% cancelled
Total trip 6h 29m, scheduled departure to arrival. Times are local. Both flew on 48 of the last 56 days.
Makes the connection95%The first flight arrived more than 127 minutes late on 5% of the days it flew: too late for the 90-minute minimum connection on a 3h 37m layover.
Arrives on time85%First flight not cancelled (0.7% are) × connection made (95%) × second flight not cancelled (0.0% are) and within 15 minutes (90%).
Total trip6h 29mGSO 06:15 to DTW 12:44, 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.