Best Time to Fly ORD to CHS: On-Time Stats by Hour & Airline
Chicago O'Hare International → Charleston AFB/International
Data through July 2026 · Last updated October 18, 2026
2,106 flights were scheduled from Chicago (ORD) to Charleston (CHS) in the last 12 months, and 76.5% of those that flew arrived on time, 1.1 points below the US average of 77.6%.
Among 5 airlines, Republic Airways led with 81.5% on time and SkyWest Airlines was last with 67.5%.
Over 24 months, Tuesday was the most reliable day (83% on time) and July the worst month (73%).
The cancellation rate was 2.0% (US average 1.8%).
ORD to CHS on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airways | 81.5% | 57 min | 2.0% | 451 |
| Envoy Air | 76.5% | 49 min | 2.5% | 515 |
| United Airlines | 75.4% | 68 min | 1.7% | 761 |
| American Airlines | 74.2% | 74 min | 2.0% | 293 |
| SkyWest Airlines | 67.5% | 71 min | 2.4% | 85 |
| PSA Airlines | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to CHS
On-time arrival % by scheduled departure hour (local time), 3,663 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 1 | |
| 7am–8am | 89.6% | 0.4% | 522 |
| 8am–9am | 81.3% | 1.4% | 509 |
| 9am–10am | 78.4% | 0.9% | 229 |
| 10am–11am | 87.2% | 1.3% | 755 |
| 11am–12pm | Limited data | 4 | |
| 12pm–1pm | 79.0% | 1.3% | 77 |
| 1pm–2pm | 81.0% | 1.9% | 107 |
| 2pm–3pm | 77.2% | 1.9% | 206 |
| 3pm–4pm | 78.8% | 0.0% | 85 |
| 4pm–5pm | 68.2% | 2.4% | 251 |
| 5pm–6pm | 72.3% | 3.5% | 86 |
| 6pm–7pm | 69.7% | 1.4% | 499 |
| 7pm–8pm | 63.3% | 4.8% | 126 |
| 8pm–9pm | 68.2% | 5.0% | 200 |
| 9pm–10pm | Limited data | 2 | |
| 11pm–12am | Limited data | 4 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ORD to CHS
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 69.3% | -10.7 pts | 8.8% | 68 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.8% | +1.7 pts | 0.0% | 126 |
| Summer peak (Jun 15 - Aug 15) | 76.2% | -3.9 pts | 1.5% | 678 |
| All other days | 80.1% | — | 1.6% | 2,791 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).