University of Illinois/Willard in July 2024

77.2%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 July 2024, reporting carriers scheduled 123 domestic departures from University of Illinois/Willard (CMI). 77.2% left less than 15 minutes late and 78.0% reached their destination on time; 0.8% were cancelled.

Nationally that month, 68.5% of flights departed on time and 68.1% arrived on time, so CMI departures were 8.7 points above the national departure figure.

Flights arriving at CMI that month were on time 63.4% of the time (123 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 39%, national aviation system 28% and air carrier 20%.

On time 78.0%
Arrived 15+ minutes late 19.5%
Cancelled 0.8%
Diverted 1.6%

Every scheduled departure from CMI in July 2024, judged by arrival at the destination.

July 2024 against a year earlier, the airport's year and the nation

Measure	Jul 2024	Year earlier	CMI, 12 months to Jul 2026	All reported flights, Jul 2024
Departed on time	77.2%	—	79.7%	68.5%
Arrived on time	78.0%	—	77.6%	68.1%
Cancelled	0.8%	—	3.0%	2.9%
Average departure delay (late minutes only)	12.7 min	—	18.0 min	24.9 min
Scheduled departures a day	4	—	5	21,154
Scheduled departures	123	—	1,785	634,613

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
MQ Envoy Air	123	100%	78.0%	1.8 min	0.8%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CMI–ORD	Champaign/Urbana to Chicago	62	72.6%	8.0 min	1.6%
CMI–DFW	Champaign/Urbana to Dallas/Fort Worth	61	83.6%	-4.6 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), July 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2024	Minutes
Air carrier	20.1%	36.6%	271
Late-arriving aircraft	39.4%	42.7%	531
National Aviation System	28.4%	16.0%	383
Extreme weather	12.1%	4.6%	163
Security	0.0%	0.1%	0

1,348 delay minutes on 24 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 July 2024?

77.2% of 123 scheduled domestic departures left less than 15 minutes late, and 78.0% reached their destination on time. The national figures that month were 68.5% and 68.1%.

How does that compare with a year earlier?

July 2023 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 2024; 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.