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

St Louis → Miami via Atlanta: arrives on time 24%

  1. 17:06 STL → 20:07 ATL
    F9 4474 · Frontier · 2h 01m · 61% on time, 2.0% cancelled
  2. 48m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 20:55 ATL → 23:05 MIA
    F9 3442 · Frontier · 2h 08m · 51% on time, 2.7% cancelled

Total trip 4h 57m, scheduled departure to arrival (Miami is 1 h ahead of St Louis). Times are local. Both flew on 55 of the last 56 days.

Makes the connection48%The first flight arrived more than 3 minutes late on 52% of the days it flew: too late for the 45-minute minimum connection on a 48m layover.
Arrives on time24%First flight not cancelled (2.0% are) × connection made (48%) × second flight not cancelled (2.7% are) and within 15 minutes (51%).
Total trip4h 57mSTL 17:06 to MIA 23:05, 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.