OnTimeStats

Historical on-time performance

Memphis to Philadelphia

875 miData through May 2026Source: US DOT · BTS

Flights on MEM–PHL 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)
Cancelled2.7%of scheduled flights

based on 582 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.

  • PSA Airlines
    On-time81%
    Medianon time
    p9035 min
    Cancel2.6%
    Flights458
  • Republic Airways
    On-time80%
    Medianon time
    p9030 min
    Cancel3.2%
    Flights124

Why flights run late

Delay causes

  • Airline30%
  • Weather3%
  • Air traffic (NAS)15%
  • Late aircraft52%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline6%
  • Weather69%
  • Air traffic (NAS)25%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 16 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 MEM → PHL

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

Mornings are the most reliable time of day to fly this route — 88% on time.

  • Mornings88% on time · p90 15 min · 713 flights
  • Afternoons79% on time · p90 30 min · 216 flights
  • Middays78% on time · p90 45 min · 958 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 78% to 83% on time.

  • Sundays83% on time · p90 25 min · 287 flights
  • Tuesdays83% on time · p90 30 min · 256 flights
  • Wednesdays83% on time · p90 30 min · 277 flights
  • Saturdays82% on time · p90 30 min · 262 flights
  • Thursdays80% on time · p90 35 min · 281 flights
  • Fridays80% on time · p90 35 min · 289 flights
  • Mondays78% on time · p90 35 min · 284 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.