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

Seattle → St Louis via Detroit: arrives on time 76%

  1. 05:30 SEA → 12:40 DTW
    DL 812 · Delta · 4h 10m · 92% on time, 0.5% cancelled
  2. 4h 01m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 16:41 DTW → 17:23 STL
    DL 2822 · Delta · 1h 42m · 79% on time, 1.8% cancelled

Total trip 9h 53m, scheduled departure to arrival (St Louis is 2 h ahead of Seattle). Times are local. Both flew on 56 of the last 56 days.

Makes the connection99%The first flight arrived more than 196 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 4h 01m layover.
Arrives on time76%First flight not cancelled (0.5% are) × connection made (99%) × second flight not cancelled (1.8% are) and within 15 minutes (79%).
Total trip9h 53mSEA 05:30 to STL 17:23, 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.