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

Dulles → Huntsville via Detroit: arrives on time 46%

  1. 17:29 IAD → 19:07 DTW
    DL 1787 · Delta · 1h 38m · 76% on time, 3.8% cancelled
  2. 1h 05m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 20:12 DTW → 21:11 HSV
    DL 5386 · Delta, flown by Endeavor · 1h 59m · 65% on time, 2.4% cancelled

Total trip 4h 42m, scheduled departure to arrival (Huntsville is 1 h behind Dulles). Times are local. Both flew on 48 of the last 56 days.

Makes the connection76%The first flight arrived more than 20 minutes late on 24% of the days it flew: too late for the 45-minute minimum connection on a 1h 05m layover.
Arrives on time46%First flight not cancelled (3.8% are) × connection made (76%) × second flight not cancelled (2.4% are) and within 15 minutes (65%).
Total trip4h 42mIAD 17:29 to HSV 21:11, 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.