University of Illinois/Willard in October 2025

81.2%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In October 2025, reporting carriers scheduled 165 domestic departures from University of Illinois/Willard (CMI). 81.2% left less than 15 minutes late and 75.8% reached their destination on time; 0.0% were cancelled.

Nationally that month, 80.0% of flights departed on time and 79.1% arrived on time, so CMI departures were 1.2 points above the national departure figure.

A year earlier, in October 2024, the airport had 118 departures with 94.9% leaving on time: a change of −13.7 points, with flights up 40%.

Flights arriving at CMI that month were on time 76.4% of the time (165 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 53%, national aviation system 41% and air carrier 6%.

On time 75.8%
Arrived 15+ minutes late 24.2%
Cancelled 0.0%
Diverted 0.0%

Every scheduled departure from CMI in October 2025, judged by arrival at the destination.

October 2025 against a year earlier, the airport's year and the nation

Measure	Oct 2025	Oct 2024	CMI, 12 months to Jul 2026	All reported flights, Oct 2025
Departed on time	81.2%	94.9%	79.7%	80.0%
Arrived on time	75.8%	93.2%	77.6%	79.1%
Cancelled	0.0%	0.0%	3.0%	0.5%
Average departure delay (late minutes only)	15.8 min	3.9 min	18.0 min	13.9 min
Scheduled departures a day	6	4	5	20,195
Scheduled departures	165	118	1,785	605,844

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
MQ Envoy Air	165	100%	75.8%	10.3 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CMI–ORD	Champaign/Urbana to Chicago	103	70.9%	14.8 min	0.0%
CMI–DFW	Champaign/Urbana to Dallas/Fort Worth	62	83.9%	2.8 min	0.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), October 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Oct 2025	Minutes
Air carrier	6.2%	34.0%	185
Late-arriving aircraft	52.7%	39.7%	1,572
National Aviation System	41.1%	22.9%	1,226
Extreme weather	0.0%	3.3%	0
Security	0.0%	0.1%	0

2,983 delay minutes on 40 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left CMI on time in October 2025?

81.2% of 165 scheduled domestic departures left less than 15 minutes late, and 75.8% reached their destination on time. The national figures that month were 80.0% and 79.1%.

How does that compare with a year earlier?

In October 2024, 94.9% of 118 departures left on time and 0.0% were cancelled, against 81.2% and 0.0% in October 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for October 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for CMI · methodology · corrections.