OnTimeStats

Historical on-time performance

Philadelphia to Miami

1,013 miData through Dec 2025Source: US DOT · BTS

Flights on PHL–MIA arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights

based on 2,739 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • Spirit Airlines
    On-time67%
    Medianon time
    p9045 min
    Cancel1.6%
    Flights61
  • American Airlines
    On-time75%
    Medianon time
    p9050 min
    Cancel1.4%
    Flights2,496
  • Frontier Airlines
    On-time71%
    Medianon time
    p9075 min
    Cancel1.1%
    Flights182

Why flights run late

Delay causes

  • Airline39%
  • Weather4%
  • Air traffic (NAS)24%
  • Late aircraft33%
  • 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 PHL → 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 — 83% on time.

  • Mornings83% on time · p90 25 min · 3,664 flights
  • Afternoons74% on time · p90 65 min · 1,433 flights
  • Middays74% on time · p90 70 min · 2,084 flights
  • Overnights72% on time · p90 65 min · 257 flights
  • Evenings62% on time · p90 80 min · 1,964 flights

Best day of week

Tuesdays are the most reliable day to fly this route — 81% on time.

  • Tuesdays81% on time · p90 35 min · 1,264 flights
  • Wednesdays77% on time · p90 45 min · 1,262 flights
  • Saturdays74% on time · p90 60 min · 1,332 flights
  • Thursdays73% on time · p90 55 min · 1,366 flights
  • Fridays73% on time · p90 55 min · 1,395 flights
  • Mondays73% on time · p90 60 min · 1,376 flights
  • Sundays72% on time · p90 65 min · 1,407 flights
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Keep exploring

Related pages

Delay predictorfor this route→PHL airportPhiladelphia→MIA airportMiami→Spirit Airlines on this routecarrier detail→Spirit Airlinesairline profile→

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.