OnTimeStats

Historical on-time performance

ATLMIA

Atlanta to Miami

595 miData through Dec 2025Source: US DOT · BTS

Flights on ATL–MIA arrive on time 69% of the time over the last 12 months.

On-time rate69%arrived within 15 min
Median delayon timetypical arrival
p90 delay60 min1 in 10 flights is worsetail risk
Cancelled1.5%of scheduled flights

based on 5,927 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • American Airlines
    On-time75%
    Medianon time
    p9055 min
    Cancel1.4%
    Flights1,636
  • Delta Air Lines
    On-time67%
    Medianon time
    p9060 min
    Cancel1.4%
    Flights3,317
  • Envoy Airbest
    On-time77%
    Medianon time
    p9040 min
    Cancel1.4%
    Flights148
  • Southwest Airlines
    On-time75%
    Medianon time
    p9040 min
    Cancel1.0%
    Flights99
  • Spirit Airlines
    On-time68%
    Medianon time
    p9065 min
    Cancel2.6%
    Flights38
  • Frontier Airlines
    On-time64%
    Medianon time
    p9080 min
    Cancel1.9%
    Flights689

Why flights run late

Delay causes

  • Airline36%
  • Weather6%
  • Air traffic (NAS)23%
  • Late aircraft36%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

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Related pages

Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.