OnTimeStats

Historical on-time performance

Washington to Wilmington

319 miData through Dec 2025Source: US DOT · BTS

Flights on DCA–ILM arrive on time 66% of the time over the last 12 months.

On-time rate66%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled6.7%of scheduled flights

based on 863 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • PSA Airlines
    On-time66%
    Medianon time
    p9060 min
    Cancel6.7%
    Flights863

Why flights run late

Delay causes

  • Airline20%
  • Weather7%
  • Air traffic (NAS)15%
  • Late aircraft59%
  • 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 DCA → ILM

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 50% to 84% on time.

  • Mornings84% on time · p90 20 min · 1,068 flights
  • Middays80% on time · p90 30 min · 301 flights
  • Afternoons68% on time · p90 75 min · 322 flights
  • Evenings66% on time · p90 70 min · 660 flights
  • Overnights50% on time · p90 100 min · 66 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 73% to 79% on time.

  • Tuesdays79% on time · p90 40 min · 348 flights
  • Saturdays79% on time · p90 30 min · 318 flights
  • Mondays75% on time · p90 45 min · 355 flights
  • Fridays75% on time · p90 45 min · 349 flights
  • Thursdays75% on time · p90 35 min · 346 flights
  • Wednesdays74% on time · p90 50 min · 348 flights
  • Sundays73% on time · p90 55 min · 353 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.