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Route on-time record

ORD to ILM: most on-time flights and the best time to fly

Chicago (Chicago O'Hare International Airport) to Wilmington (Wilmington International Airport). 568 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 1.6% were cancelled. The most reliable flight number was Envoy 4171 at 8:49 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

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ORD → ILM

Chicago to Wilmington: 568 nonstop flights a year

On time (12 months)

77%

Cancelled

1.6%

avg delay 17 min

Best time to leave

Before 9 AM

87% on time vs 57% 3 to 6 PM

Most reliable airline

Envoy

79% chance on time

Check ORD to ILM fares

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. #1 · Envoy 4171 · sold as American Eagle

    8:49 AM → 12:10 PM2h 21m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    88%

    chance on time

    On time (history)
    95%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 95% of the time (37 flights, Jun 2025 to May 2026).
    • Never cancelled in 37 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 87% on time; 3 to 6 PM: 57%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).

    Limited track record · 37 flights

    Find 8:49 AM flight fares Opens this date on Aviasales

  2. #2 · SkyWest 6423 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:25 AM → 11:49 AM2h 24m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    85%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 87% on time; 3 to 6 PM: 57%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).

    Limited track record · 11 flights

    Find 8:25 AM flight fares Opens this date on Aviasales

  3. #3 · Envoy 4009 · sold as American Eagle

    11:45 AM → 3:07 PM2h 22m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    80%

    chance on time

    On time (history)
    89%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 89% of the time (9 flights, Jun 2025 to May 2026).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).

    Limited track record · 9 flights

    Find 11:45 AM flight fares Opens this date on Aviasales

  4. #4 · SkyWest 5932 · sold as United Express, Delta Connection, American Eagle or Alaska

    11:58 AM → 3:24 PM2h 26m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    78%

    chance on time

    On time (history)
    82%
    Cancelled
    0.0%
    Avg arrival delay
    14 min
    • Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).

    Limited track record · 11 flights

    Find 11:58 AM flight fares Opens this date on Aviasales

  5. #5 · Republic 4685 · sold as American Eagle, Delta Connection or United Express

    8:46 PM → 12:12 AM2h 26m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    74%

    chance on time

    On time (history)
    81%
    Cancelled
    4.5%
    Avg arrival delay
    10 min
    • Arrived on time 81% of the time (42 flights, Jun 2025 to May 2026).
    • Cancelled 4.5% of the time (2 of 44).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).

    Limited track record · 42 flights

    Find 8:46 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)79%

    300 flights · 81% on time as flown · 1.6% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)78%

    95 flights · 79% on time as flown · 1.0% cancel

  • Republic Airways (sold as American Eagle, Delta Connection or United Express)72%

    103 flights · 69% on time as flown · 1.7% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM87%

    171 flights · avg delay 12 min

  • 9 AM to noon78%

    191 flights · avg delay 16 min

  • Noon to 3 PM62%

    34 flights · avg delay 15 min

  • 3 to 6 PM57%

    73 flights · avg delay 31 min

  • 6 to 9 PM77%

    98 flights · avg delay 14 min

Best day: Tuesday (85%). Worst: Saturday (74%).

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.

J
-
F
87
M
68
A
84
M
88
J
78
J
69
A
82
S
95
O
94
N
-
D
-

What delays this route

  • Late-arriving aircraft53%
  • Airline (crew, maintenance, boarding)23%
  • Air traffic control and airport volume16%
  • Severe weather8%

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

Finding the most reliable connections from ORD to ILM…

ORD to ILM questions

What time of day is best to fly ORD to ILM?
Before 9 AM: 87% of flights arrived on time, against 57% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from ORD to ILM?
Envoy, with a season-adjusted 79% 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 ORD to ILM?
March (68% on time); the best was September (95%), 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.

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Live status: FAA delays and ground stops