Kalamazoo/Battle Creek International in May 2026

82.5%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 May 2026, reporting carriers scheduled 166 domestic departures from Kalamazoo/Battle Creek International (AZO). 82.5% left less than 15 minutes late and 81.9% reached their destination on time; 0.6% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so AZO departures were 5.4 points above the national departure figure.

A year earlier, in May 2025, the airport had 87 departures with 90.8% leaving on time: a change of −8.3 points, with flights up 91%.

Flights arriving at AZO that month were on time 76.5% of the time (166 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 52%, extreme weather 22% and late-arriving aircraft 15%.

On time 81.9%
Arrived 15+ minutes late 17.5%
Cancelled 0.6%
Diverted 0.0%

Every scheduled departure from AZO in May 2026, judged by arrival at the destination.

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

Measure	May 2026	May 2025	AZO, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	82.5%	90.8%	77.6%	77.1%
Arrived on time	81.9%	90.8%	75.6%	77.6%
Cancelled	0.6%	0.0%	3.4%	0.9%
Average departure delay (late minutes only)	19.0 min	7.5 min	22.0 min	16.0 min
Scheduled departures a day	6	3	6	20,391
Scheduled departures	166	87	1,991	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	119	72%	81.5%	12.0 min	0.8%
MQ Envoy Air	47	28%	83.0%	-4.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
AZO–DTW	Kalamazoo to Detroit	87	81.6%	14.1 min	0.0%
AZO–ORD	Kalamazoo to Chicago	79	82.3%	0.0 min	1.3%

By scheduled departure hour

100

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

Share of departures that left less than 15 minutes late, by scheduled hour (local time), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	52.0%	33.0%	1,492
Late-arriving aircraft	15.2%	40.4%	437
National Aviation System	8.7%	20.5%	250
Extreme weather	22.0%	6.0%	632
Security	2.1%	0.1%	60

2,871 delay minutes on 29 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 AZO on time in May 2026?

82.5% of 166 scheduled domestic departures left less than 15 minutes late, and 81.9% reached their destination on time. The national figures that month were 77.1% and 77.6%.

How does that compare with a year earlier?

In May 2025, 90.8% of 87 departures left on time and 0.0% were cancelled, against 82.5% and 0.6% in May 2026.

Provenance

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