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

Chicago → Birmingham via Atlanta: arrives on time 52%

  1. 11:23 ORD → 14:25 ATL
    DL 1147 · Delta · 2h 04m · 80% on time, 3.1% cancelled
  2. 49m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 15:14 ATL → 15:10 BHM
    DL 3163 · Delta · 56m · 77% on time, 2.1% cancelled

Total trip 3h 47m, scheduled departure to arrival. Times are local. Both flew on 43 of the last 56 days.

Makes the connection72%The first flight arrived more than 4 minutes late on 28% of the days it flew: too late for the 45-minute minimum connection on a 49m layover.
Arrives on time52%First flight not cancelled (3.1% are) × connection made (72%) × second flight not cancelled (2.1% are) and within 15 minutes (77%).
Total trip3h 47mORD 11:23 to BHM 15:10, 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.