OnTimeStats

Historical on-time performance

San Diego to Miami

2,267 miData through Dec 2025Source: US DOT · BTS

Flights on SAN–MIA arrive on time 85% of the time over the last 12 months.

On-time rate85%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights

based on 566 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • American Airlines
    On-time85%
    Medianon time
    p9020 min
    Cancel0.5%
    Flights566

Why flights run late

Delay causes

  • Airline53%
  • Weather7%
  • Air traffic (NAS)9%
  • 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 SAN → 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 73% to 85% on time.

  • Overnights85% on time · p90 20 min · 1,051 flights
  • Mornings81% on time · p90 40 min · 331 flights
  • Middays73% on time · p90 45 min · 120 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 80% to 89% on time.

  • Tuesdays89% on time · p90 15 min · 213 flights
  • Mondays85% on time · p90 20 min · 214 flights
  • Thursdays84% on time · p90 20 min · 215 flights
  • Saturdays84% on time · p90 25 min · 214 flights
  • Wednesdays82% on time · p90 25 min · 214 flights
  • Sundays80% on time · p90 30 min · 217 flights
  • Fridays80% on time · p90 55 min · 215 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.