OnTimeStats

Historical on-time performance

Birmingham to Philadelphia

772 miData through Dec 2025Source: US DOT · BTS

Flights on BHM–PHL arrive on time 78% of the time over the last 12 months.

On-time rate78%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled3.7%of scheduled flights

based on 410 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • PSA Airlines
    On-time78%
    Medianon time
    p9040 min
    Cancel3.7%
    Flights410

Why flights run late

Delay causes

  • Airline22%
  • Weather8%
  • Air traffic (NAS)5%
  • Late aircraft65%
  • 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 BHM → PHL

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 — 87% on time.

  • Mornings87% on time · p90 20 min · 524 flights
  • Middays79% on time · p90 60 min · 508 flights
  • Afternoons75% on time · p90 55 min · 493 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 76% to 86% on time.

  • Tuesdays86% on time · p90 15 min · 201 flights
  • Wednesdays85% on time · p90 25 min · 225 flights
  • Thursdays83% on time · p90 35 min · 226 flights
  • Mondays77% on time · p90 80 min · 231 flights
  • Sundays76% on time · p90 50 min · 221 flights
  • Saturdays76% on time · p90 60 min · 190 flights · limited
  • Fridays76% on time · p90 55 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.