Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Dulles → Portland via Detroit: arrives on time 78%

11:10 IAD → 12:44 DTW

DL 2884 · Delta · 1h 34m · 90% on time, 0.0% cancelled
1h 16m layover in Detroit (DTW) · 45 min minimum on one ticket
14:00 DTW → 15:55 PWM

DL 1821 · Delta · 1h 55m · 89% on time, 1.8% cancelled

Total trip 4h 45m, scheduled departure to arrival. Times are local. Both flew on 48 of the last 56 days.

Makes the connection90%The first flight arrived more than 31 minutes late on 10% of the days it flew: too late for the 45-minute minimum connection on a 1h 16m layover.

Arrives on time78%First flight not cancelled (0.0% are) × connection made (90%) × second flight not cancelled (1.8% are) and within 15 minutes (89%).

Total trip4h 45mIAD 11:10 to PWM 15:55, 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.