OnTimeStats

Historical on-time performance

Greensboro to Miami

710 miData through Dec 2025Source: US DOT · BTS

Flights on GSO–MIA arrive on time 89% of the time over the last 12 months.

On-time rate89%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights

based on 450 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Envoy Air
    On-time89%
    Medianon time
    p9010 min
    Cancel1.3%
    Flights450

Why flights run late

Delay causes

  • Airline51%
  • Weather1%
  • Air traffic (NAS)27%
  • Late aircraft22%
  • 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 GSO → 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 — 89% on time.

  • Mornings89% on time · p90 15 min · 1,169 flights
  • Evenings69% on time · p90 50 min · 55 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 87% to 90% on time.

  • Tuesdays90% on time · p90 10 min · 174 flights · limited
  • Mondays90% on time · p90 10 min · 173 flights · limited
  • Thursdays88% on time · p90 15 min · 171 flights · limited
  • Fridays88% on time · p90 15 min · 175 flights · limited
  • Wednesdays88% on time · p90 10 min · 174 flights · limited
  • Saturdays87% on time · p90 15 min · 179 flights · limited
  • Sundays87% on time · p90 15 min · 178 flights · limited
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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.