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

Buffalo → Chicago via Detroit: arrives on time 79%

  1. 09:03 BUF → 10:18 DTW
    DL 3639 · Delta, flown by SkyWest · 1h 15m · 89% on time, 0.0% cancelled
  2. 2h 07m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 12:25 DTW → 12:46 MDW
    DL 4688 · Delta, flown by Endeavor · 1h 21m · 82% on time, 1.2% cancelled

Total trip 4h 43m, scheduled departure to arrival (Chicago is 1 h behind Buffalo). Times are local. Both flew on 54 of the last 56 days.

Makes the connection97%The first flight arrived more than 82 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 2h 07m layover.
Arrives on time79%First flight not cancelled (0.0% are) × connection made (97%) × second flight not cancelled (1.2% are) and within 15 minutes (82%).
Total trip4h 43mBUF 09:03 to MDW 12:46, 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.