tailodds FORECAST
Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Seattle → St Louis via Detroit: arrives on time 87%

  1. 22:22 SEA → 05:41 DTW
    AS 343 · Alaska · 4h 19m · 86% on time, 0.0% cancelled
  2. 3h 09m layover in Detroit (DTW) · 90 min minimum on separate tickets
  3. 08:50 DTW → 09:32 STL +1 day
    DL 2868 · Delta · 1h 42m · 88% on time, 0.4% cancelled

Total trip 9h 10m, scheduled departure to arrival (St Louis is 2 h ahead of Seattle). Times are local. Both flew on 50 of the last 56 days.

Makes the connection100%The first flight arrived more than 99 minutes late on <1% of the days it flew: too late for the 90-minute minimum connection on a 3h 09m layover.
Arrives on time87%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (0.4% are) and within 15 minutes (88%).
Total trip9h 10mSEA 22:22 to STL 09:32, 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.