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

Grand Rapids → Chicago via Detroit: arrives on time 70%

  1. 05:30 GRR → 06:30 DTW
    DL 4885 · Delta, flown by Endeavor · 1h 00m · 85% on time, 1.2% cancelled
  2. 2h 20m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 08:50 DTW → 09:14 MDW
    DL 4684 · Delta, flown by Endeavor · 1h 24m · 74% on time, 0.0% cancelled

Total trip 4h 44m, scheduled departure to arrival (Chicago is 1 h behind Grand Rapids). Times are local. Both flew on 55 of the last 56 days.

Makes the connection95%The first flight arrived more than 95 minutes late on 5% of the days it flew: too late for the 45-minute minimum connection on a 2h 20m layover.
Arrives on time70%First flight not cancelled (1.2% are) × connection made (95%) × second flight not cancelled (0.0% are) and within 15 minutes (74%).
Total trip4h 44mGRR 05:30 to MDW 09:14, 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.