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

Detroit → Birmingham via Atlanta: arrives on time 42%

  1. 16:00 DTW → 18:04 ATL
    DL 1467 · Delta · 2h 04m · 77% on time, 0.6% cancelled
  2. 55m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 18:59 ATL → 18:57 BHM
    DL 2371 · Delta · 58m · 63% on time, 5.8% cancelled

Total trip 3h 57m, scheduled departure to arrival (Birmingham is 1 h behind Detroit). Times are local. Both flew on 52 of the last 56 days.

Makes the connection71%The first flight arrived more than 10 minutes late on 29% of the days it flew: too late for the 45-minute minimum connection on a 55m layover.
Arrives on time42%First flight not cancelled (0.6% are) × connection made (71%) × second flight not cancelled (5.8% are) and within 15 minutes (63%).
Total trip3h 57mDTW 16:00 to BHM 18:57, 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.