OnTimeStats

Historical on-time performance

Philadelphia to Key West

1,121 miData through May 2026Source: US DOT · BTS

Flights on PHL–EYW arrive on time 85% of the time over the last 12 months.

On-time rate85%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights

based on 215 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.

  • American Airlines
    On-time85%
    Medianon time
    p9030 min
    Cancel0.5%
    Flights184
  • Republic Airways
    On-time81%
    Medianon time
    p9015 min
    Cancel3.2%
    Flights31

Why flights run late

Delay causes

  • Airline47%
  • Weather0%
  • Air traffic (NAS)15%
  • Late aircraft38%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather50%
  • Air traffic (NAS)50%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 2 cancellations with a reported cause (BTS reports causes from June 2003).

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 (2023-06 .. 2026-05).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 79% to 81% on time.

  • Mornings81% on time · p90 25 min · 456 flights
  • Middays79% on time · p90 45 min · 916 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 72% to 86% on time.

  • Tuesdays86% on time · p90 25 min · 176 flights · limited
  • Wednesdays85% on time · p90 35 min · 183 flights · limited
  • Fridays80% on time · p90 40 min · 203 flights
  • Sundays79% on time · p90 35 min · 204 flights
  • Thursdays78% on time · p90 35 min · 197 flights · limited
  • Mondays77% on time · p90 30 min · 205 flights
  • Saturdays72% on time · p90 40 min · 209 flights

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.