Quad Cities International in May 2025

82.1%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 2025, reporting carriers scheduled 402 domestic departures from Quad Cities International (MLI). 82.1% left less than 15 minutes late and 76.1% reached their destination on time; 1.7% were cancelled.

Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so MLI departures were 5.4 points above the national departure figure.

A year earlier, in May 2024, the airport had 372 departures with 72.8% leaving on time: a change of +9.3 points, with flights up 8%.

Flights arriving at MLI that month were on time 75.3% of the time (401 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, air carrier 29% and national aviation system 17%.

On time 76.1%
Arrived 15+ minutes late 21.6%
Cancelled 1.7%
Diverted 0.5%

Every scheduled departure from MLI in May 2025, judged by arrival at the destination.

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

Measure	May 2025	May 2024	MLI, 12 months to Jul 2026	All reported flights, May 2025
Departed on time	82.1%	72.8%	77.9%	76.7%
Arrived on time	76.1%	70.7%	74.2%	75.4%
Cancelled	1.7%	1.9%	3.6%	1.0%
Average departure delay (late minutes only)	13.9 min	33.6 min	21.9 min	17.5 min
Scheduled departures a day	13	12	12	20,188
Scheduled departures	402	372	4,301	605,648

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	200	50%	81.0%	2.0 min	1.0%
MQ Envoy Air	90	22%	71.1%	11.6 min	2.2%
OH PSA Airlines	62	15%	62.9%	19.2 min	4.8%
G4 Allegiant Air	50	12%	82.0%	3.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MLI–ORD	Moline to Chicago	197	79.2%	3.5 min	1.5%
MLI–CLT	Moline to Charlotte	62	62.9%	19.2 min	4.8%
MLI–DFW	Moline to Dallas/Fort Worth	62	74.2%	11.5 min	0.0%
MLI–DEN	Moline to Denver	31	77.4%	1.1 min	3.2%
MLI–PIE	Moline to St. Petersburg	10	80.0%	-8.5 min	0.0%
MLI–AZA	Moline to Phoenix	9	77.8%	40.6 min	0.0%
MLI–LAS	Moline to Las Vegas	9	100.0%	-14.6 min	0.0%
MLI–PGD	Moline to Punta Gorda	9	77.8%	-7.9 min	0.0%
MLI–SFB	Moline to Sanford	9	77.8%	8.6 min	0.0%
MLI–SRQ	Moline to Sarasota/Bradenton	4	75.0%	1.3 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), May 2025.

Delay causes

BTS cause category	Share of delay minutes	National, May 2025	Minutes
Air carrier	29.4%	29.3%	1,781
Late-arriving aircraft	39.6%	37.8%	2,393
National Aviation System	16.5%	25.9%	998
Extreme weather	14.5%	6.9%	876
Security	0.0%	0.1%	0

6,048 delay minutes on 87 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 May 2025?

82.1% of 402 scheduled domestic departures left less than 15 minutes late, and 76.1% reached their destination on time. The national figures that month were 76.7% and 75.4%.

How does that compare with a year earlier?

In May 2024, 72.8% of 372 departures left on time and 1.9% were cancelled, against 82.1% and 1.7% in May 2025.

Provenance

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