Chicago (ORD) to Champaign/Urbana (CMI): On-Time Performance
Data through July 2026
When you fly ORD to CMI matters as much as anything else about the booking: the route swung from 93% on-time in October 2024 to just 51% in February 2025. Across the full period the route averages 73% on-time against a national 78%. Morning departures also hold up better than evening ones (76% vs 67%), which matters most in the rough months.
- On-time
- 73%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 2.7%
- Flights/day
- 2.9
- last 12 months
- Duration
- 1h 3m
- scheduled
- Distance
- 135 mi
Monthly on-time trend
Best time to fly from ORD to CMI
Aim for departures around 12 p.m. (93% on-time); avoid 7 p.m. departures (60%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 73% | 16 min |
| Tuesdaybest | 78% | 19 min |
| Wednesday | 74% | 18 min |
| Thursday | 68% | 21 min |
| Friday | 68% | 21 min |
| Saturday | 78% | 14 min |
| Sunday | 73% | 22 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft55%
- Airline operations16%
- National airspace system16%
- Weather13%
Frequently asked questions
- How often are flights from ORD to CMI delayed?
- 27% of ORD–CMI 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 19 minutes.
- What is the best time of day to fly from ORD to CMI?
- Departures around 12 p.m. have the best record (93% on-time), while departures around 7 p.m. have the worst (60%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ORD to CMI?
- The scheduled ORD–CMI flight time averages 1h 3m over 135 miles. Actual arrival times vary — flights on this route land 15+ minutes late 27% of the time.
- How often are ORD to CMI flights cancelled?
- 2.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from ORD to CMI?
- February 2025 was the roughest month in this dataset, with only 51% of arrivals on time. The best was October 2024 at 93%. If your dates are flexible, that 42-point gap is worth planning around.
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Based on 1,835 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.