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

Chicago → Miami via Atlanta: arrives on time 51%

  1. 17:10 MDW → 20:22 ATL
    DL 1728 · Delta · 2h 10m · 74% on time, 2.1% cancelled
  2. 1h 15m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 21:37 ATL → 23:39 MIA
    DL 1234 · Delta · 2h 02m · 65% on time, 0.7% cancelled

Total trip 5h 29m, scheduled departure to arrival (Miami is 1 h ahead of Chicago). Times are local. Both flew on 18 of the last 56 days, too few to list among the best connections.

Makes the connection81%The first flight arrived more than 30 minutes late on 19% of the days it flew: too late for the 45-minute minimum connection on a 1h 15m layover.
Arrives on time51%First flight not cancelled (2.1% are) × connection made (81%) × second flight not cancelled (0.7% are) and within 15 minutes (65%).
Total trip5h 29mMDW 17:10 to MIA 23:39, 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.