General Mitchell International in May 2025

80.2%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 2,359 domestic departures from General Mitchell International (MKE). 80.2% left less than 15 minutes late and 78.8% reached their destination on time; 1.2% were cancelled.

Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so MKE departures were 3.5 points above the national departure figure.

A year earlier, in May 2024, the airport had 2,406 departures with 78.5% leaving on time: a change of +1.7 points, with flights down 2%.

Flights arriving at MKE that month were on time 74.3% of the time (2,356 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 36%, late-arriving aircraft 32% and national aviation system 28%.

On time 78.8%
Arrived 15+ minutes late 19.7%
Cancelled 1.2%
Diverted 0.3%

Every scheduled departure from MKE 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	MKE, 12 months to Jul 2026	All reported flights, May 2025
Departed on time	80.2%	78.5%	77.6%	76.7%
Arrived on time	78.8%	77.6%	76.2%	75.4%
Cancelled	1.2%	1.1%	2.3%	1.0%
Average departure delay (late minutes only)	17.1 min	20.4 min	17.8 min	17.5 min
Scheduled departures a day	79	80	80	20,188
Scheduled departures	2,359	2,406	29,355	605,648

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	819	35%	82.5%	2.6 min	0.4%
OO SkyWest Airlines	492	21%	77.4%	11.0 min	0.6%
DL Delta Air Lines	381	16%	85.3%	-0.6 min	0.3%
AA American Airlines	186	8%	72.6%	33.6 min	1.6%
YX Republic Airline	155	7%	55.5%	26.3 min	6.5%
OH PSA Airlines	95	4%	65.3%	17.4 min	7.4%
NK Spirit Airlines	79	3%	89.9%	-11.2 min	2.5%
UA United Airlines	61	3%	80.3%	9.5 min	0.0%
AS Alaska Airlines	48	2%	100.0%	-22.0 min	0.0%
B6 JetBlue Airways	32	1%	53.1%	30.1 min	0.0%
F9 Frontier Airlines	11	0%	72.7%	39.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MKE–ORD	Milwaukee to Chicago	363	74.9%	13.9 min	0.8%
MKE–DEN	Milwaukee to Denver	210	82.9%	5.4 min	0.0%
MKE–ATL	Milwaukee to Atlanta	197	87.8%	-7.3 min	0.5%
MKE–PHX	Milwaukee to Phoenix	127	86.6%	13.2 min	0.0%
MKE–DTW	Milwaukee to Detroit	126	83.3%	6.9 min	0.0%
MKE–MCO	Milwaukee to Orlando	125	81.6%	-0.6 min	0.8%
MKE–MSP	Milwaukee to Minneapolis	119	78.2%	10.6 min	0.0%
MKE–DCA	Milwaukee to Washington	114	75.4%	10.0 min	2.6%
MKE–LAS	Milwaukee to Las Vegas	110	80.0%	-0.7 min	1.8%
MKE–BNA	Milwaukee to Nashville	95	87.4%	-0.9 min	1.1%
MKE–CLT	Milwaukee to Charlotte	93	69.9%	15.2 min	4.3%
MKE–DFW	Milwaukee to Dallas/Fort Worth	93	63.4%	40.0 min	3.2%

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), May 2025.

Delay causes

BTS cause category	Share of delay minutes	National, May 2025	Minutes
Air carrier	35.6%	29.3%	14,022
Late-arriving aircraft	31.7%	37.8%	12,500
National Aviation System	28.1%	25.9%	11,070
Extreme weather	4.7%	6.9%	1,850
Security	0.0%	0.1%	0

39,442 delay minutes on 465 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 MKE on time in May 2025?

80.2% of 2,359 scheduled domestic departures left less than 15 minutes late, and 78.8% 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, 78.5% of 2,406 departures left on time and 1.1% were cancelled, against 80.2% and 1.2% 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 MKE · methodology · corrections.