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

Boston → Seattle via Detroit: arrives on time 68%

  1. 09:15 BOS → 11:25 DTW
    DL 1748 · Delta · 2h 10m · 88% on time, 1.9% cancelled
  2. 1h 06m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 12:31 DTW → 14:30 SEA
    DL 728 · Delta · 4h 59m · 78% on time, 0.8% cancelled

Total trip 8h 15m, scheduled departure to arrival (Seattle is 3 h behind Boston). Times are local. Both flew on 56 of the last 56 days.

Makes the connection90%The first flight arrived more than 21 minutes late on 10% of the days it flew: too late for the 45-minute minimum connection on a 1h 06m layover.
Arrives on time68%First flight not cancelled (1.9% are) × connection made (90%) × second flight not cancelled (0.8% are) and within 15 minutes (78%).
Total trip8h 15mBOS 09:15 to SEA 14:30, 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.