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

Miami → St Louis via Atlanta: arrives on time 75%

  1. 18:05 MIA → 20:22 ATL
    DL 1386 · Delta · 2h 17m · 59% on time, 1.8% cancelled
  2. 2h 48m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 23:10 ATL → 23:53 STL
    DL 1403 · Delta · 1h 46m · 83% on time, 1.8% cancelled

Total trip 6h 51m, scheduled departure to arrival (St Louis is 1 h behind Miami). Times are local. Both flew on 56 of the last 56 days.

Makes the connection94%The first flight arrived more than 123 minutes late on 6% of the days it flew: too late for the 45-minute minimum connection on a 2h 48m layover.
Arrives on time75%First flight not cancelled (1.8% are) × connection made (94%) × second flight not cancelled (1.8% are) and within 15 minutes (83%).
Total trip6h 51mMIA 18:05 to STL 23:53, 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.