Best Time to Fly CHS to ORD: On-Time Stats by Hour & Airline
Charleston AFB/International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 77.7% of Charleston (CHS) to Chicago (ORD) flights arrived on time (2,106 scheduled flights). That is in line with the national average of 77.6%.
Among 5 airlines, American Airlines led with 84.1% on time and SkyWest Airlines was last with 69.1%.
Over 24 months, Tuesday was the most reliable day (84% on time) and April the worst month (74%).
The cancellation rate was 2.5% (US average 1.8%).
CHS to ORD 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 |
|---|---|---|---|---|
| American Airlines | 84.1% | 120 min | 1.7% | 292 |
| Envoy Air | 80.8% | 76 min | 2.9% | 515 |
| United Airlines | 77.7% | 74 min | 2.0% | 760 |
| Republic Airways | 71.7% | 55 min | 3.1% | 453 |
| SkyWest Airlines | 69.1% | 124 min | 4.7% | 85 |
| PSA Airlines | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly CHS to ORD
On-time arrival % by scheduled departure hour (local time), 3,663 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 1 | |
| 6am–7am | 88.5% | 1.2% | 574 |
| 7am–8am | 88.2% | 2.3% | 262 |
| 8am–9am | 84.0% | 4.1% | 98 |
| 9am–10am | 93.3% | 4.3% | 47 |
| 10am–11am | 88.4% | 4.4% | 45 |
| 11am–12pm | 86.1% | 0.8% | 626 |
| 12pm–1pm | 82.3% | 1.7% | 407 |
| 1pm–2pm | 81.7% | 1.1% | 284 |
| 2pm–3pm | Limited data | 29 | |
| 3pm–4pm | 74.8% | 4.3% | 230 |
| 4pm–5pm | 69.3% | 1.8% | 556 |
| 5pm–6pm | 64.4% | 1.6% | 123 |
| 6pm–7pm | 64.3% | 2.9% | 205 |
| 7pm–8pm | 55.2% | 4.5% | 110 |
| 8pm–9pm | 70.4% | 9.8% | 61 |
| 9pm–10pm | Limited data | 3 | |
| 10pm–11pm | Limited data | 2 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on CHS to ORD
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) | 66.7% | -13.5 pts | 5.9% | 68 |
| Christmas & New Year (Dec 20 - Jan 3) | 78.2% | -2.0 pts | 0.0% | 125 |
| Summer peak (Jun 15 - Aug 15) | 78.1% | -2.1 pts | 2.4% | 679 |
| All other days | 80.2% | — | 2.0% | 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).