Best Time to Fly ILM to ORD: On-Time Stats by Hour & Airline
Wilmington International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
542 flights were scheduled from Wilmington (ILM) to Chicago (ORD) in the last 12 months, and 79.5% of those that flew arrived on time, 1.9 points above the US average of 77.6%.
Among 3 airlines, Republic Airways led with 81.6% on time and SkyWest Airlines was last with 76.8%.
Over 24 months, Tuesday was the most reliable day (79% on time) and July the worst month (59%).
The cancellation rate was 2.2% (US average 1.8%).
ILM 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 |
|---|---|---|---|---|
| Republic Airways | 81.6% | 76 min | 0.0% | 49 |
| Envoy Air | 80.8% | 88 min | 1.8% | 383 |
| SkyWest Airlines | 76.8% | 168 min | 4.8% | 104 |
| American Airlines | Limited data | 6 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ILM to ORD
On-time arrival % by scheduled departure hour (local time), 821 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 1 | |
| 6am–7am | 86.4% | 0.0% | 44 |
| 7am–8am | 92.3% | 1.9% | 53 |
| 9am–10am | Limited data | 1 | |
| 11am–12pm | 89.5% | 1.1% | 87 |
| 12pm–1pm | 78.8% | 0.0% | 152 |
| 1pm–2pm | 81.4% | 1.7% | 60 |
| 2pm–3pm | Limited data | 1 | |
| 3pm–4pm | 71.0% | 3.7% | 188 |
| 4pm–5pm | 61.9% | 3.5% | 87 |
| 5pm–6pm | 56.3% | 0.0% | 71 |
| 6pm–7pm | Limited data | 2 | |
| 7pm–8pm | 39.7% | 6.8% | 73 |
| 8pm–9pm | 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 ILM 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) | Limited data | 1 | ||
| Summer peak (Jun 15 - Aug 15) | 60.2% | -22.1 pts | 2.7% | 368 |
| All other days | 82.3% | — | 1.8% | 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).