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. 18:58 MDW → 21:16 DTW
    DL 4690 · Delta, flown by Endeavor · 1h 21m · 57% on time, 1.8% cancelled
  2. 1h 39m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 22:55 DTW → 23:57 GRR
    DL 4880 · Delta, flown by Endeavor · 1h 02m · 79% on time, 2.8% cancelled

Total trip 3h 59m, scheduled departure to arrival (Grand Rapids is 1 h ahead of Chicago). Times are local. Both flew on 48 of the last 56 days.

Makes the connection77%The first flight arrived more than 54 minutes late on 23% of the days it flew: too late for the 45-minute minimum connection on a 1h 39m layover.
Arrives on time59%First flight not cancelled (1.8% are) × connection made (77%) × second flight not cancelled (2.8% are) and within 15 minutes (79%).
Total trip3h 59mMDW 18:58 to GRR 23:57, 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.