OnTimeStats

Historical on-time performance

Greenville to Miami

637 miData through Dec 2025Source: US DOT · BTS

Flights on GSP–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)
Cancelled0.3%of scheduled flights

based on 641 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Envoy Air
    On-time84%
    Medianon time
    p9020 min
    Cancel0.3%
    Flights641

Why flights run late

Delay causes

  • Airline39%
  • Weather3%
  • Air traffic (NAS)27%
  • Late aircraft31%
  • 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 GSP → MIA

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

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 59% to 90% on time.

  • Mornings90% on time · p90 10 min · 1,041 flights
  • Afternoons87% on time · p90 20 min · 86 flights · limited
  • Evenings73% on time · p90 65 min · 219 flights
  • Overnights59% on time · p90 50 min · 74 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 83% to 90% on time.

  • Tuesdays90% on time · p90 10 min · 206 flights
  • Thursdays86% on time · p90 15 min · 203 flights
  • Fridays85% on time · p90 20 min · 205 flights
  • Mondays84% on time · p90 20 min · 210 flights
  • Wednesdays84% on time · p90 20 min · 202 flights
  • Sundays84% on time · p90 20 min · 207 flights
  • Saturdays83% on time · p90 25 min · 233 flights
Advertisement

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.