Historical on-time performance
Philadelphia to Wilmington
413 miData through Dec 2025Source: US DOT · BTS
Flights on PHL–ILM arrive on time 56% of the time over the last 12 months.
On-time rate56%arrived within 15 min
p90 delay80 min1 in 10 flights is worse (tail risk)
Cancelled12.4%of scheduled flights
based on 105 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- PSA AirlinesOn-time56%Medianon timep9080 minCancel12.4%Flights105
Why flights run late
Delay causes
- Airline27%
- Weather2%
- Air traffic (NAS)13%
- Late aircraft57%
- 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 → 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 62% to 88% on time.
- Mornings88% on time · p90 15 min · 108 flights · limited
- Middays81% on time · p90 85 min · 69 flights · limited
- Afternoons72% on time · p90 35 min · 106 flights · limited
- Evenings67% on time · p90 45 min · 70 flights · limited
- Overnights62% on time · p90 70 min · 111 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 81% on time.
- Mondays81% on time · p90 30 min · 68 flights · limited
- Tuesdays79% on time · p90 45 min · 57 flights · limited
- Sundays78% on time · p90 25 min · 72 flights · limited
- Wednesdays76% on time · p90 25 min · 54 flights · limited
- Thursdays71% on time · p90 65 min · 62 flights · limited
- Saturdays68% on time · p90 50 min · 81 flights · limited
- Fridays67% on time · p90 85 min · 70 flights · limited
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