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

Chicago → Grand Rapids via Detroit: arrives on time 59%

  1. 09:17 MDW → 11:35 DTW
    DL 4674 · Delta, flown by Endeavor · 1h 18m · 84% on time, 0.0% cancelled
  2. 1h 21m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 12:56 DTW → 13:55 GRR
    DL 5390 · Delta, flown by Endeavor · 59m · 69% on time, 0.0% cancelled

Total trip 3h 38m, scheduled departure to arrival (Grand Rapids is 1 h ahead of Chicago). Times are local. Both flew on 41 of the last 56 days.

Makes the connection85%The first flight arrived more than 36 minutes late on 15% of the days it flew: too late for the 45-minute minimum connection on a 1h 21m layover.
Arrives on time59%First flight not cancelled (0.0% are) × connection made (85%) × second flight not cancelled (0.0% are) and within 15 minutes (69%).
Total trip3h 38mMDW 09:17 to GRR 13:55, 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.