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DelayAtlas

Airport month record

MKEJAN

Milwaukee Mitchell International in January 2026

Departures
2,077
Month
January 2026
National, same month
79.2%
Carriers
9
C−GRADE

Historical statistics for January 2026, not live status or a forecast for this year’s January. For today’s conditions at MKE, see live FAA status.

MKE in January carries a cancellation problem, not just a delay problem: 3.7% of scheduled flights never operate, against 4.7% nationally. Of the ones that do fly, close to three flights in four arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 2,077 flights, of which Southwest Airlines flew 722 at 79.8% on time.

The national on-time rate over the same period is 79.2%, so mke in january runs 5 points behind the country as a whole. Across a thousand flights that is about 54 extra late arrivals.

Key figures

On time

73.8%

Arrivals under 15 minutes late, of 1,993 completed departures

Avg delay

78 min

Across delayed arrivals only, not all flights

Cancelled

3.71%

Nationally in January: 4.71%

Whole year

78.1%

MKE across all twelve months

These figures cover 2,077 departures from Milwaukee Mitchell International in January 2026. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.

Against the year

January next to MKE's other months

Against MKE's own year, January ran 4 points worse than the twelve-month rate of 78.1%, which makes it number eleven of twelve months, best first. Cancellations are where January stands out: 3.71% of scheduled departures were called off, 1.5 times the airport's rate across the year. Either side of it, December ran 70.1% on time and February 82.7%, so a trip moved by a few weeks would have landed in a better stretch.

MKE month by month
MonthFlightsOn timeAvg delayCancelledGrade
September 20252,31583.0%64 min0.56%B+
October 20252,56479.6%79 min0.31%B+
November 20252,23079.2%81 min4.26%B−
December 20252,27370.1%92 min1.89%C
January 2026 (this page)2,07773.8%78 min3.71%C−
February 20262,03382.7%79 min1.33%B
March 20262,62674.3%98 min6.25%C−
April 20262,58880.7%86 min2.20%B
May 20262,73580.6%65 min0.73%B+
June 20262,65779.2%72 min2.11%B
July 20262,75976.5%82 min2.97%B
August 20262,71577.2%85 min2.62%B

Departure window

The best time of day to leave MKE in January

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 2,077 flights.

  • 5am–8am741 flights75.9%
  • 8am–11am237 flights66.8%
  • 11am–2pm404 flights74.0%
  • 2pm–5pm403 flights74.6%
  • 5pm–8pm269 flights72.3%
  • 8pm–5am23 flights—

Scale runs 60% to 80%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 75.9% of the time, against 66.8% for the morning window. That is 9 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 741 flights scheduled in it.

Across the week, Tuesday is the strongest day at 84.4% on time and Sunday the weakest at 65.2%, a spread of 19 points.

On-time rate by day of the week76.8Mon84.4Tue74.4Wed77.3Thu73.5Fri65.7Sat65.2Sun
Monday: 76.8 percent on time. Tuesday: 84.4 percent on time. Wednesday: 74.4 percent on time. Thursday: 77.3 percent on time. Friday: 73.5 percent on time. Saturday: 65.7 percent on time. Sunday: 65.2 percent on time

Carrier by carrier

Which airlines ran best at MKE in January

The choice of carrier is not cosmetic here. Southwest Airlines arrives on time 79.8% of the time; SkyWest Airlines manages 66.0%. Sample sizes sit next to every figure, because a two-point gap across 507 flights means less than a ten-point one.

Carriers at MKE in January 2026
AirlineFlightsOn timeAvg delayCancelledGrade
Southwest Airlines72279.8%47 min2.35%B
SkyWest Airlines50766.0%89 min1.78%C
Delta Air Linesthin sample22682.0%113 min4.87%B−
American Airlinesthin sample20064.7%132 min8.00%D−
Republic Airwaysthin sample16176.2%73 min8.07%B−
Envoy Airthin sample6673.4%38 min3.03%C−
PSA Airlinesthin sample6375.0%46 min11.11%B−
United Airlinesthin sample6266.1%52 min0.00%C+
Frontier Airlinesthin sample3870.3%67 min2.63%C

The spread between Southwest and SkyWest is 14 points, wide enough that it should decide the booking. On a hundred trips that is 14 more arrivals inside the on-time window.

Route by route

Busiest routes out of MKE in January

Routes from MKE in January 2026
RouteFlightsOn timeAvg delayCancelledGrade
MKE to ORD · Chicago37266.9%87 min2.96%C
MKE to ATL · Atlantathin sample16983.5%136 min5.33%B−
MKE to DEN · Denverthin sample15578.6%58 min0.65%B+
MKE to MCO · Orlandothin sample13570.7%47 min1.48%C
MKE to DCA · Washingtonthin sample11575.0%54 min9.57%B−
MKE to PHX · Phoenixthin sample11370.3%111 min1.77%C
MKE to MSP · Minneapolisthin sample11369.9%86 min0.00%C+
MKE to DTW · Detroitthin sample10367.0%85 min1.94%C
MKE to DFW · Dallas-Fort Worththin sample9366.3%157 min10.75%C−
MKE to BNA · Nashvillethin sample7084.6%35 min7.14%B−
MKE to LAS · Las Vegasthin sample7081.2%45 min1.43%B
MKE to LGA · New Yorkthin sample6380.4%122 min9.52%B−
MKE to EWR · Newarkthin sample6274.1%53 min6.45%C−
MKE to CLT · Charlottethin sample6168.4%54 min6.56%C−
MKE to STL · St. Louisthin sample5787.3%57 min3.51%A−
MKE to BWI · Baltimorethin sample4487.8%39 min6.82%A−
MKE to RSW · Fort Myersthin sample4474.4%38 min0.00%C+
MKE to TPA · Tampathin sample3479.4%35 min0.00%B+
MKE to MIA · Miamithin sample3164.5%34 min0.00%D+
MKE to BOS · Bostonthin sample3167.9%48 min9.68%C−
MKE to SLC · Salt Lake Citythin sample3176.7%41 min0.00%B+

Delay causes

What held MKE up in January

Carrier accounts for 52% of the 41,000 delay minutes carriers reported here, and the remaining four split what is left.

  • Carrier
    52%
  • National Airspace System
    21%
  • Late-arriving aircraft
    17%
  • Extreme weather
    10%

The largest share of delay minutes, 52%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 21,000 of the 41,000 delay minutes reported here. The split is drawn from 40,872 reported delay minutes.

Cancellations run at 3.71%, against 4.71% nationally. That is about one flight in 25 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

9.0% of arrivals land a full hour or more behind schedule, against 7.6% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.

What to do with this

Flying from MKE in January

For a January trip through MKE: plan on this being one of the airport's harder months. The 5am–8am departures held up best at 75.9% on time, and with 9.0% of arrivals an hour or more late, a connection here deserves more slack than the same trip in September would.

Related

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.