University of Illinois/Willard in November 2025

78.5%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 November 2025, reporting carriers scheduled 163 domestic departures from University of Illinois/Willard (CMI). 78.5% left less than 15 minutes late and 75.5% reached their destination on time; 8.0% were cancelled.

Nationally that month, 78.1% of flights departed on time and 77.3% arrived on time, so CMI departures were level with the national departure figure.

A year earlier, in November 2024, the airport had 89 departures with 88.8% leaving on time: a change of −10.3 points, with flights up 83%.

Flights arriving at CMI that month were on time 74.2% of the time (163 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 42%, late-arriving aircraft 36% and air carrier 11%.

On time 75.5%
Arrived 15+ minutes late 16.6%
Cancelled 8.0%
Diverted 0.0%

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

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

Measure	Nov 2025	Nov 2024	CMI, 12 months to Jul 2026	All reported flights, Nov 2025
Departed on time	78.5%	88.8%	79.7%	78.1%
Arrived on time	75.5%	86.5%	77.6%	77.3%
Cancelled	8.0%	0.0%	3.0%	2.5%
Average departure delay (late minutes only)	11.4 min	11.6 min	18.0 min	15.6 min
Scheduled departures a day	5	3	5	19,018
Scheduled departures	163	89	1,785	570,550

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
MQ Envoy Air	163	100%	75.5%	2.9 min	8.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CMI–ORD	Champaign/Urbana to Chicago	104	73.1%	6.1 min	10.6%
CMI–DFW	Champaign/Urbana to Dallas/Fort Worth	59	79.7%	-2.2 min	3.4%

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), November 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Nov 2025	Minutes
Air carrier	10.9%	30.2%	245
Late-arriving aircraft	36.4%	38.3%	818
National Aviation System	42.2%	26.7%	947
Extreme weather	10.5%	4.6%	236
Security	0.0%	0.1%	0

2,246 delay minutes on 27 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 November 2025?

78.5% of 163 scheduled domestic departures left less than 15 minutes late, and 75.5% reached their destination on time. The national figures that month were 78.1% and 77.3%.

How does that compare with a year earlier?

In November 2024, 88.8% of 89 departures left on time and 0.0% were cancelled, against 78.5% and 8.0% in November 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for November 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.