OnTimeStats

Historical on-time performance

Philadelphia to Buffalo

279 miData through Dec 2025Source: US DOT · BTS

Flights on PHL–BUF arrive on time 60% of the time over the last 12 months.

On-time rate60%arrived within 15 min
p90 delay115 min1 in 10 flights is worse (tail risk)
Cancelled7.3%of scheduled flights

based on 109 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • PSA Airlines
    On-time60%
    Median5 min
    p90115 min
    Cancel7.3%
    Flights109

Why flights run late

Delay causes

  • Airline41%
  • Weather6%
  • Air traffic (NAS)9%
  • Late aircraft44%
  • 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 → BUF

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 60% to 87% on time.

  • Mornings87% on time · p90 15 min · 68 flights · limited
  • Afternoons82% on time · p90 30 min · 133 flights · limited
  • Middays82% on time · p90 40 min · 190 flights · limited
  • Overnights71% on time · p90 65 min · 373 flights
  • Evenings60% on time · p90 100 min · 157 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 67% to 81% on time.

  • Tuesdays81% on time · p90 30 min · 124 flights · limited
  • Thursdays79% on time · p90 35 min · 137 flights · limited
  • Wednesdays77% on time · p90 45 min · 126 flights · limited
  • Mondays72% on time · p90 65 min · 135 flights · limited
  • Sundays71% on time · p90 50 min · 143 flights · limited
  • Fridays71% on time · p90 60 min · 127 flights · limited
  • Saturdays67% on time · p90 50 min · 129 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.