OnTimeStats

Historical on-time performance

Philadelphia to Key West

1,121 miData through Dec 2025Source: US DOT · BTS

Flights on PHL–EYW arrive on time 81% of the time over the last 12 months.

On-time rate81%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights

based on 275 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.

  • Republic Airways
    On-time89%
    Medianon time
    p9020 min
    Cancel0.0%
    Flights61
  • American Airlines
    On-time79%
    Medianon time
    p9040 min
    Cancel0.5%
    Flights214

Why flights run late

Delay causes

  • Airline30%
  • Weather0%
  • Air traffic (NAS)19%
  • Late aircraft51%
  • 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 PHL → EYW

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 77% to 82% on time.

  • Mornings82% on time · p90 25 min · 360 flights
  • Middays77% on time · p90 50 min · 928 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 72% to 84% on time.

  • Tuesdays84% on time · p90 25 min · 170 flights · limited
  • Wednesdays84% on time · p90 35 min · 177 flights · limited
  • Sundays83% on time · p90 25 min · 190 flights · limited
  • Thursdays78% on time · p90 40 min · 182 flights · limited
  • Fridays77% on time · p90 40 min · 188 flights · limited
  • Mondays75% on time · p90 40 min · 192 flights · limited
  • Saturdays72% on time · p90 45 min · 194 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.