Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Chicago → Birmingham via Atlanta: arrives on time 75%

  1. 08:55 MDW → 11:45 ATL
    WN 4154 · Southwest · 1h 50m · 86% on time, 0.0% cancelled
  2. 3h 29m layover in Atlanta (ATL) · 90 min minimum on separate tickets
  3. 15:14 ATL → 15:10 BHM
    DL 3163 · Delta · 56m · 77% on time, 2.1% cancelled

Total trip 6h 15m, scheduled departure to arrival. Times are local. Both flew on 35 of the last 56 days.

Makes the connection100%The first flight arrived more than 119 minutes late on 0% of the days it flew: too late for the 90-minute minimum connection on a 3h 29m layover.
Arrives on time75%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (2.1% are) and within 15 minutes (77%).
Total trip6h 15mMDW 08:55 to BHM 15:10, 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.