Route on-time record
ILM to ORD: most on-time flights and the best time to fly
Wilmington (Wilmington International Airport) to Chicago (Chicago O'Hare International Airport). 568 nonstop flights in Jun 2025 to May 2026, 73% arrived within 15 minutes and 2.5% were cancelled. The most reliable flight number was Envoy 4009 at 3:37 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
ILM → ORD
Wilmington to Chicago: 568 nonstop flights a year
On time (12 months)
73%
Cancelled
2.5%
avg delay 21 min
Best time to leave
9 AM to noon
90% on time vs 39% 6 to 9 PM
Most reliable airline
Envoy
77% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Envoy 4009 · sold as American Eagle
3:37 PM → 5:18 PM2h 41m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 89% of the time (9 flights, Jun 2025 to May 2026).
- Lands inside ORD's trouble window: 43% of its 237 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 9 flights
Find 3:37 PM flight fares Opens this date on Aviasales#2 · Envoy 4171 · sold as American Eagle
12:40 PM → 2:21 PM2h 41m nonstop
Local times, typical schedule. Last flown 2026-05-20.
78%
chance on time
- On time (history)
- 84%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 84% of the time (37 flights, Jun 2025 to May 2026).
- Never cancelled in 37 scheduled flights.
- Lands inside ORD's trouble window: 43% of its 237 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 37 flights
Find 12:40 PM flight fares Opens this date on Aviasales#3 · Republic 4785 · sold as American Eagle, Delta Connection or United Express
6:00 AM → 7:49 AM2h 49m nonstop
Local times, typical schedule. Last flown 2026-05-20.
76%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 86% of the time (43 flights, Jun 2025 to May 2026).
- Never cancelled in 43 scheduled flights.
Limited track record · 43 flights
Find 6:00 AM flight fares Opens this date on Aviasales#4 · SkyWest 6423 · sold as United Express, Delta Connection, American Eagle or Alaska
12:19 PM → 1:58 PM2h 39m nonstop
Local times, typical schedule. Last flown 2026-05-31.
72%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
Limited track record · 11 flights
Find 12:19 PM flight fares Opens this date on Aviasales#5 · SkyWest 5416 · sold as United Express, Delta Connection, American Eagle or Alaska
4:20 PM → 6:02 PM2h 42m nonstop
Local times, typical schedule. Last flown 2026-05-31.
69%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
- Lands inside ORD's trouble window: 43% of its 237 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 11 flights
Find 4:20 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Envoy Air (sold as American Eagle)77%
300 flights · 82% on time as flown · 2.2% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)70%
95 flights · 66% on time as flown · 2.7% cancel
- Republic Airways (sold as American Eagle, Delta Connection or United Express)65%
103 flights · 60% on time as flown · 2.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM90%
98 flights · avg delay 6 min
- 9 AM to noon90%
83 flights · avg delay 6 min
- Noon to 3 PM77%
124 flights · avg delay 20 min
- 3 to 6 PM66%
187 flights · avg delay 30 min
- 6 to 9 PM39%
76 flights · avg delay 36 min
Best day: Monday (82%). Worst: Thursday (68%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft43%
- Airline (crew, maintenance, boarding)27%
- Air traffic control and airport volume20%
- Severe weather10%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
ILM to ORD questions
- What time of day is best to fly ILM to ORD?
- 9 AM to noon: 90% of flights arrived on time, against 39% for departures 6 to 9 PM.
- Which airline is most on time from ILM to ORD?
- Envoy, with a season-adjusted 77% chance of operating and arriving on time over 300 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on ILM to ORD?
- July (60% on time); the best was October (94%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from ILM
- ORD to ILM (return)
- ILM to CLT 87%
- ILM to ATL 85%
- ILM to LGA 77%
- ILM to DCA 67%
- ILM to DFW 81%
- ILM to BOS 68%
- ILM to MIA 86%
Live status: FAA delays and ground stops