Route Reliability
Charleston → Philadelphia
CHS–PHL · 550 miles · Charleston International Airport to Philadelphia International Airport
- 79%
- Arrive within 15 minutes
- 12 min
- Average arrival delay
- 2.1%
- Cancelled
- 1,227
- Flights in the data
Data through May 2026.
Airlines on this route
- American Airlines79% on time · 1,144 flights
- Frontier Airlines70% on time · 83 flights
Too little history on this route to call a winner. We rank airlines only after 100 flights each.
What the data says
The 12–3 PM departure wins.
CHS–PHL flights departing between 12–3 PM arrived on time 88% of the time, versus 71% between 3–6 PM.
Tuesday has been the better bet.
A small edge: 83% on time on Tuesdays against 77% on Thursdays.
Ticking up lately.
CHS–PHL flights arrived on time 82% of the time over the last three months in the data, compared with 78% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon81%(181 flights)
- Tue83%(160 flights)
- Wed79%(154 flights)
- Thu77%(172 flights)
- Fri78%(185 flights)
- Sat78%(161 flights)
- Sun77%(187 flights)
- 3–6 AM—(2 flights)
- 6–9 AM85%(258 flights)
- 9 AM–12 PM83%(339 flights)
- 12–3 PM88%(69 flights)
- 3–6 PM71%(274 flights)
- 6–9 PM73%(258 flights)
Jun 74% → May 82% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 74% | 114 |
| July 2025 | 70% | 99 |
| August 2025 | 83% | 123 |
| September 2025 | 81% | 109 |
| October 2025 | 79% | 125 |
| November 2025 | 78% | 111 |
| December 2025 | 73% | 85 |
| January 2026 | 78% | 63 |
| February 2026 | 83% | 53 |
| March 2026 | 81% | 77 |
| April 2026 | 82% | 118 |
| May 2026 | 82% | 123 |
Keep nerding
Based on 1,227 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.