OnTimeStats

Historical on-time performance

Kansas City to Miami

1,251 miData through Dec 2025Source: US DOT · BTS

Flights on MCI–MIA arrive on time 84% of the time over the last 12 months.

On-time rate84%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled2.2%of scheduled flights

based on 405 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • Envoy Air
    On-time83%
    Medianon time
    p9015 min
    Cancel4.6%
    Flights65
  • American Airlines
    On-time85%
    Medianon time
    p9020 min
    Cancel1.8%
    Flights340

Why flights run late

Delay causes

  • Airline73%
  • Weather6%
  • Air traffic (NAS)12%
  • Late aircraft8%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly MCI → MIA

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

Mornings are the most reliable time of day to fly this route — 83% on time.

  • Mornings83% on time · p90 25 min · 1,219 flights
  • Middays76% on time · p90 35 min · 153 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 79% to 84% on time.

  • Fridays84% on time · p90 25 min · 205 flights
  • Tuesdays83% on time · p90 25 min · 201 flights
  • Thursdays82% on time · p90 25 min · 201 flights
  • Wednesdays81% on time · p90 25 min · 188 flights · limited
  • Mondays80% on time · p90 30 min · 207 flights
  • Sundays80% on time · p90 30 min · 202 flights
  • Saturdays79% on time · p90 35 min · 222 flights
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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.