OnTimeStats

Historical on-time performance

Philadelphia to Birmingham

772 miData through Dec 2025Source: US DOT · BTS

Flights on PHL–BHM arrive on time 72% of the time over the last 12 months.

On-time rate72%arrived within 15 min
p90 delay80 min1 in 10 flights is worse (tail risk)
Cancelled3.4%of scheduled flights

based on 411 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • PSA Airlines
    On-time72%
    Medianon time
    p9080 min
    Cancel3.4%
    Flights411

Why flights run late

Delay causes

  • Airline31%
  • Weather5%
  • Air traffic (NAS)16%
  • Late aircraft49%
  • 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 → BHM

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 66% to 91% on time.

  • Afternoons91% on time · p90 10 min · 133 flights · limited
  • Mornings88% on time · p90 20 min · 58 flights · limited
  • Middays84% on time · p90 40 min · 806 flights
  • Overnights69% on time · p90 75 min · 154 flights · limited
  • Evenings66% on time · p90 75 min · 372 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 71% to 86% on time.

  • Wednesdays86% on time · p90 30 min · 230 flights
  • Tuesdays83% on time · p90 30 min · 196 flights · limited
  • Mondays80% on time · p90 65 min · 231 flights
  • Sundays79% on time · p90 35 min · 224 flights
  • Thursdays78% on time · p90 55 min · 224 flights
  • Saturdays77% on time · p90 45 min · 187 flights · limited
  • Fridays71% on time · p90 70 min · 231 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.