General Mitchell International in December 2025

71.8%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 December 2025, reporting carriers scheduled 2,273 domestic departures from General Mitchell International (MKE). 71.8% left less than 15 minutes late and 68.7% reached their destination on time; 1.9% were cancelled.

Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so MKE departures were level with the national departure figure.

A year earlier, in December 2024, the airport had 2,205 departures with 79.7% leaving on time: a change of −7.9 points, with flights up 3%.

Flights arriving at MKE that month were on time 67.1% of the time (2,276 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 46%, late-arriving aircraft 25% and national aviation system 24%.

On time 68.7%
Arrived 15+ minutes late 29.3%
Cancelled 1.9%
Diverted 0.0%

Every scheduled departure from MKE in December 2025, judged by arrival at the destination.

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

Measure	Dec 2025	Dec 2024	MKE, 12 months to Jul 2026	All reported flights, Dec 2025
Departed on time	71.8%	79.7%	77.6%	72.0%
Arrived on time	68.7%	79.3%	76.2%	71.9%
Cancelled	1.9%	0.4%	2.3%	1.5%
Average departure delay (late minutes only)	26.0 min	16.7 min	17.8 min	21.2 min
Scheduled departures a day	76	74	80	19,410
Scheduled departures	2,273	2,205	29,355	582,304

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	863	38%	74.2%	9.4 min	0.3%
OO SkyWest Airlines	524	23%	61.3%	33.6 min	3.1%
DL Delta Air Lines	285	13%	72.6%	15.8 min	3.9%
AA American Airlines	203	9%	71.4%	28.7 min	0.5%
YX Republic Airline	142	6%	68.3%	12.5 min	2.8%
UA United Airlines	78	3%	64.1%	20.4 min	0.0%
OH PSA Airlines	61	3%	49.2%	80.9 min	1.6%
AS Alaska Airlines	41	2%	56.1%	13.3 min	0.0%
MQ Envoy Air	36	2%	66.7%	6.7 min	8.3%
NK Spirit Airlines	22	1%	72.7%	-12.3 min	18.2%
F9 Frontier Airlines	18	1%	50.0%	77.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MKE–ORD	Milwaukee to Chicago	405	58.5%	37.6 min	3.7%
MKE–ATL	Milwaukee to Atlanta	183	78.7%	3.1 min	3.3%
MKE–DEN	Milwaukee to Denver	168	67.9%	18.4 min	0.0%
MKE–PHX	Milwaukee to Phoenix	141	68.8%	15.6 min	0.0%
MKE–MCO	Milwaukee to Orlando	133	72.2%	16.6 min	3.0%
MKE–DTW	Milwaukee to Detroit	121	65.3%	24.0 min	2.5%
MKE–MSP	Milwaukee to Minneapolis	115	70.4%	27.0 min	2.6%
MKE–DCA	Milwaukee to Washington	106	66.0%	44.7 min	0.9%
MKE–DFW	Milwaukee to Dallas/Fort Worth	93	71.0%	5.9 min	1.1%
MKE–CLT	Milwaukee to Charlotte	78	67.9%	58.6 min	0.0%
MKE–BNA	Milwaukee to Nashville	77	76.6%	5.4 min	0.0%
MKE–BWI	Milwaukee to Baltimore	75	81.3%	2.5 min	2.7%

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), December 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2025	Minutes
Air carrier	45.5%	33.3%	28,050
Late-arriving aircraft	24.9%	41.1%	15,351
National Aviation System	23.8%	19.1%	14,683
Extreme weather	5.7%	6.4%	3,518
Security	0.0%	0.2%	9

61,611 delay minutes on 667 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 December 2025?

71.8% of 2,273 scheduled domestic departures left less than 15 minutes late, and 68.7% reached their destination on time. The national figures that month were 72.0% and 71.9%.

How does that compare with a year earlier?

In December 2024, 79.7% of 2,205 departures left on time and 0.4% were cancelled, against 71.8% and 1.9% in December 2025.

Provenance

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