FlightRecord

Champaign/Urbana (CMI) to Chicago (ORD): On-Time Performance

Data through May 2026

Champaign/Urbana (CMI) to Chicago (ORD) effectively runs on two schedules. In October 2024, 91% of arrivals were on time; in December 2025 that fell to 66% — a 25-point seasonal swing. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 60%), which matters most in the rough months.

On-time
77%
arrived <15 min late
Avg delay
19 min
completed flights
Cancelled
2.4%
Flights/day
2.8
last 12 months
Duration
1h 11m
scheduled
Distance
135 mi

Monthly on-time trend

Monthly on-time percentage for CMI to ORD flights50%75%100%June 2024: 75% on-time (56 flights)75Jun 2024July 2024: 74% on-time (62 flights)74August 2024: 80% on-time (64 flights)80September 2024: 73% on-time (60 flights)73Sep 2024October 2024: 91% on-time (57 flights)91November 2024: 80% on-time (30 flights)80December 2024: 85% on-time (27 flights)85Dec 2024January 2025: 89% on-time (53 flights)89February 2025: 78% on-time (52 flights)78March 2025: 76% on-time (54 flights)76Mar 2025April 2025: 78% on-time (82 flights)78May 2025: 84% on-time (89 flights)84June 2025: 75% on-time (72 flights)75Jun 2025July 2025: 69% on-time (69 flights)69August 2025: 75% on-time (84 flights)75September 2025: 84% on-time (68 flights)84Sep 2025October 2025: 71% on-time (103 flights)71November 2025: 82% on-time (104 flights)82December 2025: 66% on-time (97 flights)66Dec 2025January 2026: 73% on-time (87 flights)73February 2026: 76% on-time (80 flights)76March 2026: 73% on-time (84 flights)73Mar 2026April 2026: 77% on-time (86 flights)77May 2026: 80% on-time (90 flights)80

Best time to fly from CMI to ORD

Aim for departures around 7 a.m. (87% on-time); avoid 7 p.m. departures (51%).

On-time percentage by scheduled departure hour, CMI to ORD5 a.m.: 88% on-time (25 flights)56 a.m.: 85% on-time (561 flights)67 a.m.: 87% on-time (54 flights)79 a.m.: 75% on-time (49 flights)911 a.m.: 83% on-time (290 flights)1112 p.m.: 81% on-time (69 flights)121 p.m.: 63% on-time (59 flights)132 p.m.: 74% on-time (186 flights)143 p.m.: 63% on-time (72 flights)154 p.m.: 69% on-time (86 flights)165 p.m.: 61% on-time (31 flights)176 p.m.: 65% on-time (116 flights)187 p.m.: 51% on-time (63 flights)198 p.m.: 59% on-time (48 flights)20scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday76%23 min
Tuesday76%19 min
Wednesday78%15 min
Thursday77%21 min
Friday79%15 min
Saturdaybest83%17 min
Sunday71%24 min

What causes delays on this route

Share of total delay minutes by cause, as reported by carriers to the US DOT.

  • Late-arriving aircraft52%
  • Airline operations17%
  • National airspace system27%
  • Weather5%

Frequently asked questions

How often are flights from CMI to ORD delayed?
23% of CMI–ORD 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 19 minutes.
What is the best time of day to fly from CMI to ORD?
Departures around 7 a.m. have the best record (87% on-time), while departures around 7 p.m. have the worst (51%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
How long is the flight from CMI to ORD?
The scheduled CMI–ORD flight time averages 1h 11m over 135 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
How often are CMI to ORD flights cancelled?
2.4% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
What is the worst month to fly from CMI to ORD?
December 2025 was the roughest month in this dataset, with only 66% of arrivals on time. The best was October 2024 at 91%. If your dates are flexible, that 25-point gap is worth planning around.

Explore related pages

More routes from CMI

Based on 1,710 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.