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

Seattle → Dulles via Detroit: arrives on time 88%

  1. 23:10 SEA → 06:27 DTW
    DL 810 · Delta · 4h 17m · 88% on time, 1.1% cancelled
  2. 2h 23m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 08:50 DTW → 10:23 IAD +1 day
    DL 2884 · Delta · 1h 35m · 90% on time, 0.0% cancelled

Total trip 8h 15m, scheduled departure to arrival (Dulles is 3 h ahead of Seattle). Times are local. Both flew on 48 of the last 56 days.

Makes the connection99%The first flight arrived more than 98 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 2h 23m layover.
Arrives on time88%First flight not cancelled (1.1% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (90%).
Total trip8h 15mSEA 23:10 to IAD 10:23, 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.