University of Illinois/Willard (CMI) Delays and On-Time Departures
Champaign/Urbana, IL · ranked 118th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
82.1% of the 1,785 flights scheduled to depart Champaign/Urbana (CMI) in the last 12 months left on time, 4.6 points above the US average of 77.4%.
That ranks 118th of 333 US airports tracked on this site, with 3.0% of departures cancelled.
October has been the best month (87% on time) and Sunday the weakest day of the week (81%).
Best time of day to fly out of Champaign/Urbana (CMI)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 92.3% | 0.0% | 52 |
| 6am–7am | 88.8% | 1.3% | 956 |
| 7am–8am | 88.4% | 0.9% | 347 |
| 9am–10am | 74.5% | 4.1% | 49 |
| 10am–11am | Limited data | 1 | |
| 11am–12pm | 83.0% | 0.6% | 350 |
| 12pm–1pm | 84.1% | 1.4% | 70 |
| 1pm–2pm | 70.2% | 3.4% | 59 |
| 2pm–3pm | 79.8% | 0.6% | 333 |
| 3pm–4pm | 80.5% | 3.0% | 599 |
| 4pm–5pm | 81.5% | 1.2% | 82 |
| 5pm–6pm | 90.3% | 0.0% | 31 |
| 6pm–7pm | 68.3% | 7.3% | 177 |
| 7pm–8pm | 61.4% | 9.5% | 63 |
| 8pm–9pm | 65.8% | 14.6% | 48 |
Airlines at CMI ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Envoy Air | 82.1% | 80.1% | 3.0% | 1,785 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of CMI
On-time departures by day, 24 months.
Best month to fly out of CMI
On-time departures by month, 24 months.
Holiday travel at Champaign/Urbana (CMI)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 74.5% | -9.9 pts | 10.5% | 57 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.1% | -10.4 pts | 5.3% | 114 |
| Summer peak (Jun 15 - Aug 15) | 78.8% | -5.6 pts | 2.0% | 558 |
| All other days | 84.5% | — | 1.9% | 2,488 |
Monthly on-time departure trend at CMI
On-time departure % each month, with the 12-month US average for reference.
Routes from Champaign/Urbana (CMI)
Every route from CMI with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| CMI → Chicago (ORD) | 75.9% | 3.6% | 1,066 |
| CMI → Dallas/Fort Worth (DFW) | 86.3% | 2.1% | 719 |