OnTimeStats

Historical on-time performance

Cincinnati to Miami

948 miData through May 2026Source: US DOT · BTS

Flights on CVG–MIA arrive on time 79% of the time over the last 12 months.

On-time rate79%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights

based on 822 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.

  • Envoy Air
    On-time80%
    Medianon time
    p9035 min
    Cancel0.6%
    Flights786
  • Frontier Airlines
    On-time69%
    Medianon time
    p9075 min
    Cancel2.8%
    Flights36

Why flights run late

Delay causes

  • Airline33%
  • Weather10%
  • Air traffic (NAS)19%
  • Late aircraft38%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather100%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 6 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly CVG → MIA

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

Mornings are the most reliable time of day to fly this route — 85% on time.

  • Mornings85% on time · p90 20 min · 1,802 flights
  • Middays72% on time · p90 60 min · 246 flights
  • Evenings66% on time · p90 70 min · 1,130 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 72% to 83% on time.

  • Tuesdays83% on time · p90 25 min · 416 flights
  • Wednesdays81% on time · p90 30 min · 416 flights
  • Fridays79% on time · p90 45 min · 502 flights
  • Mondays78% on time · p90 45 min · 486 flights
  • Thursdays76% on time · p90 50 min · 481 flights
  • Saturdays74% on time · p90 50 min · 478 flights
  • Sundays72% on time · p90 65 min · 506 flights

Keep exploring

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.