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

Birmingham → Detroit via Atlanta: arrives on time 56%

  1. 18:46 BHM → 21:00 ATL
    DL 1132 · Delta · 1h 14m · 74% on time, 1.7% cancelled
  2. 53m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 21:53 ATL → 23:57 DTW
    DL 651 · Delta · 2h 04m · 78% on time, 0.0% cancelled

Total trip 4h 11m, scheduled departure to arrival (Detroit is 1 h ahead of Birmingham). Times are local. Both flew on 48 of the last 56 days.

Makes the connection73%The first flight arrived more than 8 minutes late on 27% of the days it flew: too late for the 45-minute minimum connection on a 53m layover.
Arrives on time56%First flight not cancelled (1.7% are) × connection made (73%) × second flight not cancelled (0.0% are) and within 15 minutes (78%).
Total trip4h 11mBHM 18:46 to DTW 23:57, layover included

Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.

Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.