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

Miami → Chicago via Atlanta: arrives on time 73%

  1. 07:10 MIA → 09:15 ATL
    DL 1211 · Delta · 2h 05m · 93% on time, 2.2% cancelled
  2. 3h 15m layover in Atlanta (ATL) · 90 min minimum on separate tickets
  3. 12:30 ATL → 13:25 MDW
    WN 225 · Southwest · 1h 55m · 76% on time, 0.0% cancelled

Total trip 7h 15m, scheduled departure to arrival (Chicago is 1 h behind Miami). Times are local. Both flew on 24 of the last 56 days.

Makes the connection98%The first flight arrived more than 105 minutes late on 2% of the days it flew: too late for the 90-minute minimum connection on a 3h 15m layover.
Arrives on time73%First flight not cancelled (2.2% are) × connection made (98%) × second flight not cancelled (0.0% are) and within 15 minutes (76%).
Total trip7h 15mMIA 07:10 to MDW 13:25, 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.