University of Illinois/Willard in July 2026

81.5%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 July 2026, reporting carriers scheduled 151 domestic departures from University of Illinois/Willard (CMI). 81.5% left less than 15 minutes late and 82.1% reached their destination on time; 2.0% were cancelled.

Nationally that month, 68.8% of flights departed on time and 69.4% arrived on time, so CMI departures were 12.7 points above the national departure figure.

A year earlier, in July 2025, the airport had 131 departures with 75.6% leaving on time: a change of +5.9 points, with flights up 15%.

Flights arriving at CMI that month were on time 78.8% of the time (151 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 55%, late-arriving aircraft 24% and national aviation system 21%.

On time 82.1%
Arrived 15+ minutes late 15.9%
Cancelled 2.0%
Diverted 0.0%

Every scheduled departure from CMI in July 2026, judged by arrival at the destination.

July 2026 against a year earlier, the airport's year and the nation

Measure	Jul 2026	Jul 2025	CMI, 12 months to Jul 2026	All reported flights, Jul 2026
Departed on time	81.5%	75.6%	79.7%	68.8%
Arrived on time	82.1%	74.8%	77.6%	69.4%
Cancelled	2.0%	3.1%	3.0%	2.6%
Average departure delay (late minutes only)	25.3 min	21.0 min	18.0 min	24.1 min
Scheduled departures a day	5	4	5	21,066
Scheduled departures	151	131	1,785	631,970

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
MQ Envoy Air	151	100%	82.1%	10.6 min	2.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CMI–ORD	Champaign/Urbana to Chicago	93	78.5%	5.8 min	3.2%
CMI–DFW	Champaign/Urbana to Dallas/Fort Worth	58	87.9%	18.0 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 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2026	Minutes
Air carrier	54.9%	31.7%	1,906
Late-arriving aircraft	24.0%	41.8%	833
National Aviation System	20.8%	19.9%	722
Extreme weather	0.3%	6.5%	9
Security	0.0%	0.1%	0

3,470 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 2026?

81.5% of 151 scheduled domestic departures left less than 15 minutes late, and 82.1% reached their destination on time. The national figures that month were 68.8% and 69.4%.

How does that compare with a year earlier?

In July 2025, 75.6% of 131 departures left on time and 3.1% were cancelled, against 81.5% and 2.0% in July 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 2026; 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.