Historical on-time performance
Philadelphia to Charleston
550 miData through Dec 2025Source: US DOT · BTS
Flights on PHL–CHS arrive on time 74% of the time over the last 12 months.
On-time rate74%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled2.5%of scheduled flights
based on 1,216 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Republic AirwaysOn-time77%Medianon timep9030 minCancel2.5%Flights159
- PSA AirlinesOn-time73%Medianon timep9075 minCancel3.8%Flights182
- American AirlinesOn-time74%Medianon timep9050 minCancel2.2%Flights875
Why flights run late
Delay causes
- Airline22%
- Weather4%
- Air traffic (NAS)17%
- 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 → CHS
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 68% to 83% on time.
- Mornings83% on time · p90 25 min · 1,165 flights
- Middays81% on time · p90 40 min · 681 flights
- Overnights72% on time · p90 45 min · 333 flights
- Afternoons72% on time · p90 75 min · 1,130 flights
- Evenings68% on time · p90 75 min · 773 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 81% on time.
- Tuesdays81% on time · p90 35 min · 525 flights
- Wednesdays81% on time · p90 40 min · 550 flights
- Saturdays76% on time · p90 45 min · 555 flights
- Mondays76% on time · p90 65 min · 635 flights
- Sundays75% on time · p90 50 min · 595 flights
- Thursdays73% on time · p90 65 min · 579 flights
- Fridays71% on time · p90 75 min · 643 flights
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