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

Miami → Chicago via Atlanta: arrives on time 38%

  1. 17:28 MIA → 20:00 ATL
    F9 4405 · Frontier · 2h 30m · 57% on time, 1.8% cancelled
  2. 1h 00m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 21:00 ATL → 22:03 MDW
    F9 2291 · Frontier · 2h 04m · 68% on time, 2.4% cancelled

Total trip 5h 36m, scheduled departure to arrival (Chicago is 1 h behind Miami). Times are local. Both flew on 56 of the last 56 days.

Makes the connection57%The first flight arrived more than 15 minutes late on 43% of the days it flew: too late for the 45-minute minimum connection on a 1h 00m layover.
Arrives on time38%First flight not cancelled (1.8% are) × connection made (57%) × second flight not cancelled (2.4% are) and within 15 minutes (68%).
Total trip5h 36mMIA 17:28 to MDW 22:03, 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.