Wilmington (ILM) to Atlanta (ATL): On-Time Performance
Data through May 2026
Wilmington (ILM) to Atlanta (ATL) effectively runs on two schedules. In September 2025, 97% of arrivals were on time; in June 2025 that fell to 69% — a 28-point seasonal swing. Across the full period the route averages 86% on-time against a national 78%. Morning departures also hold up better than evening ones (93% vs 75%), which matters most in the rough months.
- On-time
- 86%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 1.4%
- Flights/day
- 3.1
- last 12 months
- Duration
- 1h 36m
- scheduled
- Distance
- 377 mi
Best airline from ILM to ATL
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 87% | 12 min | 1.5% | 1,790 |
| Endeavor Air | 83% | 14 min | 0.9% | 348 |
Monthly on-time trend
Best time to fly from ILM to ATL
Aim for departures around 6 a.m. (94% on-time); avoid 6 p.m. departures (66%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 17 min |
| Tuesday | 89% | 11 min |
| Wednesdaybest | 91% | 7 min |
| Thursday | 87% | 9 min |
| Friday | 84% | 13 min |
| Saturday | 86% | 11 min |
| Sunday | 80% | 21 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft32%
- Airline operations51%
- National airspace system12%
- Weather6%
Frequently asked questions
- How often are flights from ILM to ATL delayed?
- 14% of ILM–ATL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 13 minutes.
- Which airline is most reliable from ILM to ATL?
- Delta Air Lines has the best on-time record on this route at 87%, based on 1,790 flights. 2 airlines flew ILM–ATL frequently enough to compare in this period.
- What is the best time of day to fly from ILM to ATL?
- Departures around 6 a.m. have the best record (94% on-time), while departures around 6 p.m. have the worst (66%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ILM to ATL?
- The scheduled ILM–ATL flight time averages 1h 36m over 377 miles. Actual arrival times vary — flights on this route land 15+ minutes late 14% of the time.
- How often are ILM to ATL flights cancelled?
- 1.4% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from ILM to ATL?
- June 2025 was the roughest month in this dataset, with only 69% of arrivals on time. The best was September 2025 at 97%. If your dates are flexible, that 28-point gap is worth planning around.
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Based on 2,166 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.