Chicago (ORD) to Wilmington (ILM): On-Time Performance
Data through July 2026
The calendar drives reliability on ORD–ILM. September 2025 flights landed on schedule 94% of the time, but July 2025 dropped to 64% — a gap of 30 points. Across the full period the route averages 79% on-time against a national 78%.
- On-time
- 79%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 1.2%
- Flights/day
- 1.5
- last 12 months
- Duration
- 2h 19m
- scheduled
- Distance
- 760 mi
Best airline from ORD to ILM
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 83% | 10 min | 1.2% | 503 |
| SkyWest Airlines | 80% | 16 min | 0.0% | 182 |
| Republic Airways | 69% | 23 min | 1.8% | 109 |
| American Airlines | 65% | 31 min | 2.9% | 70 |
Monthly on-time trend
Best time to fly from ORD to ILM
Aim for departures around 8 a.m. (88% on-time); avoid 3 p.m. departures (53%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 13 min |
| Tuesdaybest | 86% | 12 min |
| Wednesday | 84% | 10 min |
| Thursday | 75% | 15 min |
| Friday | 82% | 14 min |
| Saturday | 74% | 19 min |
| Sunday | 74% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft47%
- Airline operations28%
- National airspace system18%
- Weather7%
Frequently asked questions
- How often are flights from ORD to ILM delayed?
- 21% of ORD–ILM flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 15 minutes.
- Which airline is most reliable from ORD to ILM?
- Envoy Air has the best on-time record on this route at 83%, based on 503 flights. 4 airlines flew ORD–ILM frequently enough to compare in this period.
- What is the best time of day to fly from ORD to ILM?
- Departures around 8 a.m. have the best record (88% on-time), while departures around 3 p.m. have the worst (53%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ORD to ILM?
- The scheduled ORD–ILM flight time averages 2h 19m over 760 miles. Actual arrival times vary — flights on this route land 15+ minutes late 21% of the time.
- How often are ORD to ILM flights cancelled?
- 1.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from ORD to ILM?
- July 2025 was the roughest month in this dataset, with only 64% of arrivals on time. The best was September 2025 at 94%. If your dates are flexible, that 30-point gap is worth planning around.
Explore related pages
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Related guides
Based on 864 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.