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

Chicago → Seattle via Atlanta: arrives on time 61%

  1. 17:10 MDW → 20:22 ATL
    DL 1728 · Delta · 2h 10m · 74% on time, 2.1% cancelled
  2. 1h 13m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 21:35 ATL → 23:59 SEA
    DL 903 · Delta · 5h 24m · 79% on time, 0.7% cancelled

Total trip 8h 49m, scheduled departure to arrival (Seattle is 2 h behind Chicago). Times are local. Both flew on 43 of the last 56 days.

Makes the connection80%The first flight arrived more than 28 minutes late on 20% of the days it flew: too late for the 45-minute minimum connection on a 1h 13m layover.
Arrives on time61%First flight not cancelled (2.1% are) × connection made (80%) × second flight not cancelled (0.7% are) and within 15 minutes (79%).
Total trip8h 49mMDW 17:10 to SEA 23:59, 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.