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

Houston → Grand Rapids via Detroit: arrives on time 43%

  1. 11:32 IAH → 15:20 DTW
    DL 1043 · Delta · 2h 48m · 85% on time, 0.8% cancelled
  2. 51m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 16:11 DTW → 17:14 GRR
    DL 5511 · Delta, flown by Endeavor · 1h 03m · 58% on time, 2.0% cancelled

Total trip 4h 42m, scheduled departure to arrival (Grand Rapids is 1 h ahead of Houston). Times are local. Both flew on 49 of the last 56 days.

Makes the connection76%The first flight arrived more than 6 minutes late on 24% of the days it flew: too late for the 45-minute minimum connection on a 51m layover.
Arrives on time43%First flight not cancelled (0.8% are) × connection made (76%) × second flight not cancelled (2.0% are) and within 15 minutes (58%).
Total trip4h 42mIAH 11:32 to GRR 17:14, 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.