Central Il Regional Airport at Bloomington in September 2025

87.9%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 September 2025, reporting carriers scheduled 157 domestic departures from Central Il Regional Airport at Bloomington (BMI). 87.9% left less than 15 minutes late and 86.6% reached their destination on time; 0.6% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so BMI departures were 4.8 points above the national departure figure.

A year earlier, in September 2024, the airport had 138 departures with 93.5% leaving on time: a change of −5.6 points, with flights up 14%.

Flights arriving at BMI that month were on time 85.9% of the time (156 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, extreme weather 33% and national aviation system 13%.

On time 86.6%
Arrived 15+ minutes late 12.7%
Cancelled 0.6%
Diverted 0.0%

Every scheduled departure from BMI in September 2025, judged by arrival at the destination.

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

Measure	Sep 2025	Sep 2024	BMI, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	87.9%	93.5%	82.8%	83.1%
Arrived on time	86.6%	88.4%	81.0%	82.8%
Cancelled	0.6%	0.7%	2.1%	0.5%
Average departure delay (late minutes only)	8.9 min	5.8 min	15.6 min	12.2 min
Scheduled departures a day	5	5	5	18,748
Scheduled departures	157	138	1,953	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
MQ Envoy Air	120	76%	86.7%	-2.6 min	0.8%
OO SkyWest Airlines	20	13%	95.0%	-10.2 min	0.0%
G4 Allegiant Air	17	11%	76.5%	7.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BMI–DFW	Bloomington/Normal to Dallas/Fort Worth	60	88.3%	-4.7 min	1.7%
BMI–ORD	Bloomington/Normal to Chicago	60	85.0%	-0.6 min	0.0%
BMI–ATL	Bloomington/Normal to Atlanta	20	95.0%	-10.2 min	0.0%
BMI–PIE	Bloomington/Normal to St. Petersburg	9	77.8%	9.7 min	0.0%
BMI–SFB	Bloomington/Normal to Sanford	8	75.0%	4.5 min	0.0%

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), September 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2025	Minutes
Air carrier	10.6%	34.3%	143
Late-arriving aircraft	40.0%	37.4%	542
National Aviation System	12.5%	22.6%	170
Extreme weather	33.4%	5.6%	453
Security	3.5%	0.1%	47

1,355 delay minutes on 20 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 BMI on time in September 2025?

87.9% of 157 scheduled domestic departures left less than 15 minutes late, and 86.6% reached their destination on time. The national figures that month were 83.1% and 82.8%.

How does that compare with a year earlier?

In September 2024, 93.5% of 138 departures left on time and 0.7% were cancelled, against 87.9% and 0.6% in September 2025.

Provenance

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