Charleston (CHS) to Philadelphia (PHL): On-Time Performance
Data through July 2026
Charleston (CHS) to Philadelphia (PHL) effectively runs on two schedules. In October 2024, 89% of arrivals were on time; in May 2025 that fell to 69% — a 20-point seasonal swing. Across the full period the route averages 79% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 68%), which matters most in the rough months.
- On-time
- 79%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 2.4%
- Flights/day
- 3.0
- last 12 months
- Duration
- 1h 51m
- scheduled
- Distance
- 550 mi
Best airline from CHS to PHL
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 81% | 17 min | 2.3% | 1,754 |
| PSA Airlines | 79% | 23 min | 2.8% | 534 |
| Republic Airways | 73% | 15 min | 2.4% | 246 |
| Frontier Airlines | 66% | 24 min | 2.2% | 184 |
Monthly on-time trend
Best time to fly from CHS to PHL
Aim for departures around 5 a.m. (97% on-time); avoid 3 p.m. departures (63%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 79% | 17 min |
| Tuesdaybest | 82% | 20 min |
| Wednesday | 81% | 15 min |
| Thursday | 76% | 22 min |
| Friday | 77% | 22 min |
| Saturday | 80% | 18 min |
| Sunday | 76% | 16 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft54%
- Airline operations30%
- National airspace system14%
- Weather1%
Frequently asked questions
- How often are flights from CHS to PHL delayed?
- 21% of CHS–PHL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 19 minutes.
- Which airline is most reliable from CHS to PHL?
- American Airlines has the best on-time record on this route at 81%, based on 1,754 flights. 4 airlines flew CHS–PHL frequently enough to compare in this period.
- What is the best time of day to fly from CHS to PHL?
- Departures around 5 a.m. have the best record (97% on-time), while departures around 3 p.m. have the worst (63%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CHS to PHL?
- The scheduled CHS–PHL flight time averages 1h 51m over 550 miles. Actual arrival times vary — flights on this route land 15+ minutes late 21% of the time.
- How often are CHS to PHL flights cancelled?
- 2.4% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from CHS to PHL?
- May 2025 was the roughest month in this dataset, with only 69% of arrivals on time. The best was October 2024 at 89%. If your dates are flexible, that 20-point gap is worth planning around.
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Based on 2,718 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.