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

Chicago → Buffalo via Detroit: arrives on time 72%

  1. 09:17 MDW → 11:35 DTW
    DL 4674 · Delta, flown by Endeavor · 1h 18m · 84% on time, 0.0% cancelled
  2. 2h 28m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 14:03 DTW → 15:21 BUF
    DL 3642 · Delta, flown by SkyWest · 1h 18m · 75% on time, 0.0% cancelled

Total trip 5h 04m, scheduled departure to arrival (Buffalo is 1 h ahead of Chicago). Times are local. Both flew on 55 of the last 56 days.

Makes the connection96%The first flight arrived more than 103 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 2h 28m layover.
Arrives on time72%First flight not cancelled (0.0% are) × connection made (96%) × second flight not cancelled (0.0% are) and within 15 minutes (75%).
Total trip5h 04mMDW 09:17 to BUF 15:21, 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.