OnTimeStats

Historical on-time performance

Miami to Charleston

489 miData through Dec 2025Source: US DOT · BTS

Flights on MIA–CHS arrive on time 67% of the time over the last 12 months.

On-time rate67%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights

based on 890 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • American Airlines
    On-time67%
    Medianon time
    p9065 min
    Cancel1.2%
    Flights890

Why flights run late

Delay causes

  • Airline37%
  • Weather5%
  • Air traffic (NAS)10%
  • Late aircraft48%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly MIA → CHS

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 64% to 90% on time.

  • Middays90% on time · p90 10 min · 51 flights · limited
  • Mornings86% on time · p90 15 min · 305 flights
  • Afternoons71% on time · p90 70 min · 532 flights
  • Overnights67% on time · p90 60 min · 1,093 flights
  • Evenings64% on time · p90 75 min · 523 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 64% to 78% on time.

  • Tuesdays78% on time · p90 45 min · 352 flights
  • Wednesdays75% on time · p90 50 min · 357 flights
  • Saturdays71% on time · p90 45 min · 359 flights
  • Mondays69% on time · p90 60 min · 359 flights
  • Thursdays68% on time · p90 65 min · 354 flights
  • Fridays68% on time · p90 60 min · 359 flights
  • Sundays64% on time · p90 90 min · 364 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.