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

Miami → Denver via New York: arrives on time 47%

  1. 15:25 MIA → 18:54 JFK
    DL 1514 · Delta · 3h 29m · 73% on time, 4.5% cancelled
  2. 56m layover in New York (JFK) · 45 min minimum on one ticket
  3. 19:50 JFK → 22:45 DEN
    DL 424 · Delta · 4h 55m · 70% on time, 2.1% cancelled

Total trip 9h 20m, scheduled departure to arrival (Denver is 2 h behind Miami). Times are local. Both flew on 56 of the last 56 days.

Makes the connection72%The first flight arrived more than 11 minutes late on 28% of the days it flew: too late for the 45-minute minimum connection on a 56m layover.
Arrives on time47%First flight not cancelled (4.5% are) × connection made (72%) × second flight not cancelled (2.1% are) and within 15 minutes (70%).
Total trip9h 20mMIA 15:25 to DEN 22:45, 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.