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

St Louis → Seattle via Atlanta: arrives on time 80%

  1. 06:00 STL → 08:38 ATL
    DL 1524 · Delta · 1h 38m · 96% on time, 1.6% cancelled
  2. 3h 57m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 12:35 ATL → 14:55 SEA
    DL 629 · Delta · 5h 20m · 82% on time, 0.5% cancelled

Total trip 10h 55m, scheduled departure to arrival (Seattle is 2 h behind St Louis). Times are local. Both flew on 56 of the last 56 days.

Makes the connection99%The first flight arrived more than 192 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 57m layover.
Arrives on time80%First flight not cancelled (1.6% are) × connection made (99%) × second flight not cancelled (0.5% are) and within 15 minutes (82%).
Total trip10h 55mSTL 06:00 to SEA 14:55, 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.