Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Raleigh/Durham → Detroit via Dulles: arrives on time 88%

  1. 06:00 RDU → 07:11 IAD
    UA 1789 · United · 1h 11m · 96% on time, 1.8% cancelled
  2. 3h 59m layover in Dulles (IAD) · 90 min minimum on separate tickets
  3. 11:10 IAD → 12:44 DTW
    DL 2884 · Delta · 1h 34m · 90% on time, 0.0% cancelled

Total trip 6h 44m, scheduled departure to arrival. Times are local. Both flew on 47 of the last 56 days.

Makes the connection100%The first flight arrived more than 149 minutes late on 0% of the days it flew: too late for the 90-minute minimum connection on a 3h 59m layover.
Arrives on time88%First flight not cancelled (1.8% are) × connection made (100%) × second flight not cancelled (0.0% are) and within 15 minutes (90%).
Total trip6h 44mRDU 06:00 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.