Charleston International Airport (CHS) delays & on-time performance
Charleston, South Carolina · 29 nonstop destinations · 13 airlines · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at CHS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
On-time arrivals
80%
arrived < 15 min late
Cancelled
2.3%
577 flights
Avg arrival delay
18 min
85 min when late
Departed on time
80%
avg taxi-out 16 min
Figures cover 24,565 departures from CHS; on-time is measured at arrival. Arrivals into CHS were on time 76% of the time.
Key facts
- Flights departing Charleston International Airport (CHS) arrived on time 80% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 2.3% were cancelled, and 8% arrived an hour or more late.
- Envoy Air was the most punctual airline here (86% on time); JetBlue was the least (72%).
- Departures scheduled around 5am did best (95% on time); around 8pm did worst (65%).
- The largest source of delay minutes was late-arriving aircraft (46%).
Most delayed routes from CHS
Lowest on-time arrival rates among regularly flown routes.
- DEN · Denver69%643 flts
- FLL · Fort Lauderdale71%508 flts
- BOS · Boston71%1,141 flts
- DCA · Washington72%1,751 flts
- JFK · New York75%785 flts
- LGA · New York76%1,471 flts
- ORD · Chicago78%2,106 flts
- BNA · Nashville78%986 flts
- EWR · Newark79%1,341 flts
- DAL · Dallas79%365 flts
Most reliable routes from CHS
Highest on-time arrival rates among regularly flown routes.
- ATL · Atlanta90%3,221 flts
- IAD · Washington85%758 flts
- DTW · Detroit84%573 flts
- CLT · Charlotte83%2,498 flts
- BWI · Baltimore82%1,233 flts
- MDW · Chicago81%370 flts
- DFW · Dallas/Fort Worth81%1,227 flts
- PHL · Philadelphia80%1,089 flts
- MIA · Miami80%1,007 flts
- DAL · Dallas79%365 flts
Best airline at CHS
Departures from this airport, ranked by on-time arrival.
| Airline | On time | Cancelled | Avg delay | Routes | Flights |
|---|---|---|---|---|---|
| Envoy Air | 86% | 2.7% | 11 min | 5 | 924 |
| Delta Air Lines | 85% | 2.2% | 15 min | 6 | 4,587 |
| American Airlines | 81% | 1.6% | 19 min | 6 | 5,125 |
| United Airlines | 80% | 1.5% | 18 min | 5 | 2,730 |
| Republic Airways | 79% | 4.8% | 17 min | 10 | 2,728 |
| Southwest Airlines | 79% | 0.9% | 12 min | 9 | 3,640 |
| SkyWest Airlines | 74% | 2.5% | 27 min | 3 | 359 |
| Alaska Airlines | 74% | 0.6% | 12 min | 1 | 347 |
| PSA Airlines | 73% | 4.2% | 34 min | 5 | 1,831 |
| JetBlue | 72% | 3.1% | 23 min | 3 | 1,639 |
| Frontier Airlines | 71% | 1.2% | 21 min | 2 | 84 |
| Spirit Airlines | 67% | 5.7% | 24 min | 4 | 441 |
| Allegiant Air | 67% | 0.0% | 39 min | 3 | 130 |
Best time to fly out of CHS
On-time arrival rate by scheduled departure hour (local time).
- 5am95%811 flts
- 6am92%2,734 flts
- 7am89%1,613 flts
- 8am91%958 flts
- 9am88%606 flts
- 10am89%1,545 flts
- 11am84%2,158 flts
- 12pm83%1,518 flts
- 1pm76%1,129 flts
- 2pm76%1,811 flts
- 3pm70%1,522 flts
- 4pm70%1,909 flts
- 5pm72%1,305 flts
- 6pm73%1,998 flts
- 7pm67%1,928 flts
- 8pm65%853 flts
Monthly trend
Why departures were late
- Late-arriving aircraft46%
- Airline (crew, maintenance, cleaning, fueling)27%
- Air traffic control & airport congestion25%
- Extreme weather3%
- Security0%
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.