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

Boston → Dulles via Detroit: arrives on time 80%

  1. 09:15 BOS → 11:25 DTW
    DL 1748 · Delta · 2h 10m · 88% on time, 1.9% cancelled
  2. 3h 45m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 15:10 DTW → 16:42 IAD
    DL 1787 · Delta · 1h 32m · 86% on time, 2.6% cancelled

Total trip 7h 27m, scheduled departure to arrival. Times are local. Both flew on 48 of the last 56 days.

Makes the connection98%The first flight arrived more than 180 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 3h 45m layover.
Arrives on time80%First flight not cancelled (1.9% are) × connection made (98%) × second flight not cancelled (2.6% are) and within 15 minutes (86%).
Total trip7h 27mBOS 09:15 to IAD 16:42, 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.