Charleston AFB/International (CHS) Delays and On-Time Departures
Charleston, SC · ranked 202nd of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, Charleston (CHS) had 24,565 scheduled departures and 79.7% of them left on time (US average 77.4%).
That ranks 202nd of 333 US airports tracked on this site, with 2.4% of departures cancelled.
Envoy Air was the most punctual airline here, with 86.8% of departures on time.
September has been the best month (86% on time) and Sunday the weakest day of the week (76%).
Best time of day to fly out of Charleston (CHS)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.6% | 2.0% | 1,877 |
| 6am–7am | 92.9% | 2.0% | 5,398 |
| 7am–8am | 91.6% | 1.9% | 3,515 |
| 8am–9am | 92.8% | 2.4% | 1,593 |
| 9am–10am | 88.0% | 2.0% | 1,483 |
| 10am–11am | 86.6% | 1.7% | 3,085 |
| 11am–12pm | 83.5% | 1.9% | 4,431 |
| 12pm–1pm | 81.0% | 2.4% | 2,848 |
| 1pm–2pm | 78.7% | 1.1% | 2,627 |
| 2pm–3pm | 77.5% | 2.5% | 3,824 |
| 3pm–4pm | 72.3% | 2.3% | 2,919 |
| 4pm–5pm | 73.9% | 1.9% | 3,822 |
| 5pm–6pm | 72.1% | 3.2% | 2,560 |
| 6pm–7pm | 71.1% | 3.0% | 4,214 |
| 7pm–8pm | 66.8% | 3.5% | 3,483 |
| 8pm–9pm | 68.1% | 3.3% | 1,703 |
| 9pm–10pm | 63.6% | 1.8% | 274 |
| 10pm–11pm | Limited data | 14 | |
Airlines at CHS ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Envoy Air | 86.8% | 86.1% | 2.7% | 924 |
| Delta Air Lines | 84.6% | 85.2% | 2.2% | 4,587 |
| United Airlines | 84.3% | 80.5% | 1.5% | 2,730 |
| Republic Airways | 81.5% | 78.8% | 4.8% | 2,728 |
| American Airlines | 80.2% | 81.1% | 1.6% | 5,125 |
| Alaska Airlines | 79.7% | 73.9% | 0.6% | 347 |
| Southwest Airlines | 76.2% | 78.8% | 0.9% | 3,640 |
| SkyWest Airlines | 73.1% | 74.1% | 2.5% | 359 |
| PSA Airlines | 72.7% | 73.2% | 4.2% | 1,831 |
| Frontier Airlines | 71.1% | 71.1% | 1.2% | 84 |
| JetBlue | 71.0% | 71.8% | 3.1% | 1,639 |
| Spirit Airlines | 69.2% | 67.1% | 5.7% | 441 |
| Allegiant Air | 63.1% | 66.9% | 0.0% | 130 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of CHS
On-time departures by day, 24 months.
Best month to fly out of CHS
On-time departures by month, 24 months.
Holiday travel at Charleston (CHS)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 80.6% | -1.5 pts | 0.8% | 962 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.6% | -4.5 pts | 1.3% | 1,904 |
| Summer peak (Jun 15 - Aug 15) | 74.0% | -8.0 pts | 3.8% | 9,059 |
| All other days | 82.1% | — | 2.0% | 37,745 |
Monthly on-time departure trend at CHS
On-time departure % each month, with the 12-month US average for reference.
Routes from Charleston (CHS)
Every route from CHS with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| CHS → Atlanta (ATL) | 89.5% | 1.8% | 3,221 |
| CHS → Charlotte (CLT) | 83.3% | 1.8% | 2,498 |
| CHS → Chicago (ORD) | 77.7% | 2.5% | 2,106 |
| CHS → Washington (DCA) | 72.5% | 4.5% | 1,751 |
| CHS → New York (LGA) | 75.8% | 5.7% | 1,471 |
| CHS → Newark (EWR) | 79.2% | 3.6% | 1,341 |
| CHS → Baltimore (BWI) | 82.2% | 1.5% | 1,233 |
| CHS → Dallas/Fort Worth (DFW) | 80.6% | 2.3% | 1,227 |
| CHS → Boston (BOS) | 70.9% | 2.6% | 1,141 |
| CHS → Philadelphia (PHL) | 79.7% | 1.9% | 1,089 |
| CHS → Miami (MIA) | 79.6% | 1.2% | 1,007 |
| CHS → Nashville (BNA) | 78.0% | 0.6% | 986 |
| CHS → New York (JFK) | 74.6% | 5.7% | 785 |
| CHS → Washington (IAD) | 84.9% | 1.1% | 758 |
| CHS → Denver (DEN) | 69.3% | 0.6% | 643 |
| CHS → Detroit (DTW) | 83.8% | 1.4% | 573 |
| CHS → Fort Lauderdale (FLL) | 70.5% | 3.0% | 508 |
| CHS → Chicago (MDW) | 81.3% | 0.5% | 370 |
| CHS → Dallas (DAL) | 79.4% | 0.8% | 365 |
| CHS → Seattle (SEA) | 73.9% | 0.6% | 347 |
| CHS → Minneapolis (MSP) | 80.5% | 1.6% | 318 |
| CHS → Houston (IAH) | 84.2% | 0.5% | 211 |
| CHS → Houston (HOU) | 79.8% | 0.0% | 193 |
| CHS → St. Louis (STL) | 79.8% | 0.6% | 159 |