Historical on-time performance
Philadelphia to Wilmington
413 miData through May 2026Source: 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.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather92%
- Air traffic (NAS)8%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 13 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 PHL → ILM
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 · 108 flights · limited
- Middays76% on time · p90 70 min · 105 flights · limited
- Afternoons71% on time · p90 35 min · 112 flights · limited
- Overnights62% on time · p90 70 min · 111 flights · limited
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