Quad Cities International in September 2025

90.6%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 352 domestic departures from Quad Cities International (MLI). 90.6% left less than 15 minutes late and 86.9% reached their destination on time; 0.3% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so MLI departures were 7.5 points above the national departure figure.

A year earlier, in September 2024, the airport had 339 departures with 86.4% leaving on time: a change of +4.2 points, with flights up 4%.

Flights arriving at MLI that month were on time 84.0% of the time (351 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 46%, air carrier 23% and extreme weather 17%.

On time 86.9%
Arrived 15+ minutes late 12.8%
Cancelled 0.3%
Diverted 0.0%

Every scheduled departure from MLI 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	MLI, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	90.6%	86.4%	77.9%	83.1%
Arrived on time	86.9%	85.0%	74.2%	82.8%
Cancelled	0.3%	0.0%	3.6%	0.5%
Average departure delay (late minutes only)	12.2 min	10.9 min	21.9 min	12.2 min
Scheduled departures a day	12	11	12	18,748
Scheduled departures	352	339	4,301	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
MQ Envoy Air	161	46%	88.8%	-4.7 min	0.6%
OO SkyWest Airlines	121	34%	81.8%	5.4 min	0.0%
OH PSA Airlines	62	18%	90.3%	8.4 min	0.0%
G4 Allegiant Air	8	2%	100.0%	-14.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MLI–ORD	Moline to Chicago	164	84.1%	1.4 min	0.0%
MLI–DFW	Moline to Dallas/Fort Worth	90	87.8%	-3.5 min	1.1%
MLI–CLT	Moline to Charlotte	60	91.7%	7.5 min	0.0%
MLI–DEN	Moline to Denver	30	86.7%	2.1 min	0.0%
MLI–LAS	Moline to Las Vegas	8	100.0%	-14.2 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	23.4%	34.3%	1,043
Late-arriving aircraft	46.1%	37.4%	2,059
National Aviation System	13.4%	22.6%	597
Extreme weather	17.2%	5.6%	766
Security	0.0%	0.1%	0

4,465 delay minutes on 45 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 MLI on time in September 2025?

90.6% of 352 scheduled domestic departures left less than 15 minutes late, and 86.9% 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, 86.4% of 339 departures left on time and 0.0% were cancelled, against 90.6% and 0.3% 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 MLI · methodology · corrections.