Best Time to Fly ORD to ILM: On-Time Stats by Hour & Airline
Chicago O'Hare International → Wilmington International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 83.3% of Chicago (ORD) to Wilmington (ILM) flights arrived on time (542 scheduled flights). That is 5.7 points above the national average of 77.6%.
SkyWest Airlines was the most punctual of the 3 airlines on the route at 84.6%, while Republic Airways trailed at 78.7%.
September has been the best month (95% on time) and Sunday the weakest day of the week (75%).
1.5% of flights were cancelled, versus 1.8% nationally.
ORD to ILM 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 |
|---|---|---|---|---|
| SkyWest Airlines | 84.6% | 76 min | 0.0% | 104 |
| Envoy Air | 84.1% | 57 min | 1.6% | 383 |
| Republic Airways | 78.7% | 54 min | 4.1% | 49 |
| American Airlines | Limited data | 6 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to ILM
On-time arrival % by scheduled departure hour (local time), 821 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 88.2% | 0.0% | 238 |
| 9am–10am | 86.7% | 1.6% | 61 |
| 10am–11am | Limited data | 1 | |
| 11am–12pm | 79.4% | 0.7% | 285 |
| 12pm–1pm | Limited data | 7 | |
| 1pm–2pm | 66.7% | 0.0% | 54 |
| 2pm–3pm | Limited data | 3 | |
| 3pm–4pm | 52.6% | 1.7% | 58 |
| 4pm–5pm | Limited data | 15 | |
| 7pm–8pm | 73.3% | 4.3% | 47 |
| 8pm–9pm | 80.8% | 7.8% | 51 |
| 11pm–12am | Limited data | 1 | |
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 ILM
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) | Limited data | 1 | ||
| Summer peak (Jun 15 - Aug 15) | 75.1% | -8.0 pts | 0.8% | 368 |
| All other days | 83.1% | — | 1.6% | 452 |
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).