Historical on-time performance
Greenville to Philadelphia
514 miData through Dec 2025Source: US DOT · BTS
Flights on GSP–PHL arrive on time 83% of the time over the last 12 months.
On-time rate83%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled2.3%of scheduled flights
based on 476 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- PSA AirlinesOn-time83%Medianon timep9025 minCancel2.3%Flights476
Why flights run late
Delay causes
- Airline54%
- Weather2%
- Air traffic (NAS)6%
- Late aircraft38%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly GSP → 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 77% to 91% on time.
- Middays91% on time · p90 10 min · 126 flights · limited
- Mornings88% on time · p90 15 min · 1,086 flights
- Evenings77% on time · p90 55 min · 258 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 85% to 89% on time.
- Thursdays89% on time · p90 15 min · 211 flights
- Tuesdays87% on time · p90 15 min · 212 flights
- Sundays87% on time · p90 10 min · 210 flights
- Wednesdays86% on time · p90 15 min · 211 flights
- Mondays86% on time · p90 15 min · 216 flights
- Fridays85% on time · p90 30 min · 218 flights
- Saturdays85% on time · p90 15 min · 203 flights
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