Chicago (ORD) to Champaign/Urbana (CMI): On-Time Performance
Data through May 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 72% on-time against a national 78%. Morning departures also hold up better than evening ones (75% vs 65%), which matters most in the rough months.
- On-time
- 72%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 2.4%
- Flights/day
- 2.8
- 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 4 p.m. (94% on-time); avoid 7 p.m. departures (53%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 72% | 17 min |
| Tuesday | 77% | 20 min |
| Wednesday | 73% | 17 min |
| Thursday | 66% | 23 min |
| Friday | 69% | 21 min |
| Saturdaybest | 78% | 12 min |
| Sunday | 72% | 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 aircraft54%
- Airline operations16%
- National airspace system17%
- Weather13%
Frequently asked questions
- How often are flights from ORD to CMI delayed?
- 28% of ORD–CMI 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 ORD to CMI?
- Departures around 4 p.m. have the best record (94% on-time), while departures around 7 p.m. have the worst (53%). 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 28% of the time.
- How often are ORD to CMI 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 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 1,708 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.