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

Seattle → St Louis via Atlanta: arrives on time 75%

  1. 06:00 SEA → 13:49 ATL
    DL 569 · Delta · 4h 49m · 95% on time, 0.3% cancelled
  2. 3h 24m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 17:13 ATL → 17:56 STL
    DL 1393 · Delta · 1h 44m · 79% on time, 3.8% cancelled

Total trip 9h 57m, 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 connection100%The first flight arrived more than 159 minutes late on <1% of the days it flew: too late for the 45-minute minimum connection on a 3h 24m layover.
Arrives on time75%First flight not cancelled (0.3% are) × connection made (100%) × second flight not cancelled (3.8% are) and within 15 minutes (79%).
Total trip9h 57mSEA 06:00 to STL 17:56, 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.