Historical on-time performance
Philadelphia to Greenville
515 miData through May 2026Source: US DOT · BTS
Flights on PHL–GSP arrive on time 68% of the time over the last 12 months.
On-time rate68%arrived within 15 min
p90 delay100 min1 in 10 flights is worse (tail risk)
Cancelled3.4%of scheduled flights
based on 445 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- PSA AirlinesOn-time68%Medianon timep90100 minCancel3.4%Flights445
Why flights run late
Delay causes
- Airline26%
- Weather4%
- Air traffic (NAS)19%
- Late aircraft50%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline13%
- Weather87%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 15 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 → GSP
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 20 min · 121 flights · limited
- Afternoons80% on time · p90 65 min · 271 flights
- Evenings68% on time · p90 85 min · 1,043 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 66% to 81% on time.
- Wednesdays81% on time · p90 40 min · 211 flights
- Tuesdays78% on time · p90 40 min · 207 flights
- Mondays74% on time · p90 80 min · 215 flights
- Fridays70% on time · p90 85 min · 219 flights
- Thursdays70% on time · p90 105 min · 212 flights
- Saturdays66% on time · p90 70 min · 199 flights · limited
- Sundays66% on time · p90 85 min · 210 flights
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