Historical on-time performance
Grand Rapids to Philadelphia
573 miData through Dec 2025Source: US DOT · BTS
Flights on GRR–PHL arrive on time 92% of the time over the last 12 months.
On-time rate92%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 96 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- PSA AirlinesOn-time92%Medianon timep9010 minCancel0.0%Flights96
Why flights run late
Delay causes
- Airline34%
- Weather16%
- Air traffic (NAS)2%
- Late aircraft48%
- 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 GRR → PHL
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 89% to 91% on time.
- Middays91% on time · p90 5 min · 66 flights · limited
- Mornings89% on time · p90 15 min · 116 flights · limited
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