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

Seattle → Boston via Detroit: arrives on time 46%

  1. 09:45 SEA → 17:05 DTW
    DL 2324 · Delta · 4h 20m · 90% on time, 1.6% cancelled
  2. 52m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 17:57 DTW → 20:00 BOS
    DL 1707 · Delta · 2h 03m · 57% on time, 3.0% cancelled

Total trip 7h 15m, scheduled departure to arrival (Boston is 3 h ahead of Seattle). Times are local. Both flew on 44 of the last 56 days.

Makes the connection84%The first flight arrived more than 7 minutes late on 16% of the days it flew: too late for the 45-minute minimum connection on a 52m layover.
Arrives on time46%First flight not cancelled (1.6% are) × connection made (84%) × second flight not cancelled (3.0% are) and within 15 minutes (57%).
Total trip7h 15mSEA 09:45 to BOS 20:00, 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.