BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
ORD→MKE

Chicago, IL (ORD) to Milwaukee, WI (MKE) flight delay odds

60.9% of 5,201 official scheduled ORD-to-MKE flights arrived on time; 26.0% arrived at least 30 minutes late and 4.7% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALHigher disruption
60.9%arrived on time
26.0%30+ min late
4.7%cancelled
5,201scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late16.6%all scheduled flights
120+ minutes late7.9%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+27.9 mincompleted flights

Which departure time was most reliable for ORD to MKE?

Among qualifying ORD-to-MKE departure window results, Early morning had the highest on-time rate: 71.0% of 403 flights. Evening was lowest at 56.9% across 1,693 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning40371.0%16.6%5.2%
Late morning87066.7%21.5%3.3%
Afternoon1,55760.4%26.4%4.8%
Evening1,69356.9%29.6%5.0%
Night67859.0%27.3%5.8%

Which weekday was most reliable for ORD to MKE?

Among qualifying ORD-to-MKE weekday results, Tuesday had the highest on-time rate: 67.5% of 738 flights. Sunday was lowest at 54.7% across 761 flights.

DayFlightsOn time30+ minCancelled
Monday76157.6%28.0%5.3%
Tuesday73867.5%22.2%4.2%
Wednesday72264.8%24.8%2.5%
Thursday73760.8%25.1%5.3%
Friday74258.9%27.0%5.0%
Saturday74062.8%23.4%5.4%
Sunday76154.7%31.1%5.5%

Which airline was most reliable for ORD to MKE?

Among qualifying ORD-to-MKE airline results, Republic Airways had the highest on-time rate: 73.2% of 112 flights. SkyWest Airlines was lowest at 60.7% across 4,933 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines4,93360.7%26.3%4.6%
Envoy Air13060.8%26.9%4.6%
Republic Airways11273.2%15.2%7.1%
PSA Airlines2661.5%15.4%15.4%

Which month was most reliable for ORD to MKE?

Among qualifying ORD-to-MKE month results, September 2025 had the highest on-time rate: 72.6% of 394 flights. December 2025 was lowest at 50.9% across 405 flights.

MonthFlightsOn time30+ minCancelled
July 202539455.8%31.7%3.8%
August 202539964.2%22.6%5.5%
September 202539472.6%19.5%1.0%
October 202546367.8%25.5%0.0%
November 202546462.9%17.9%11.2%
December 202540550.9%33.8%4.2%
January 202637353.4%35.9%2.7%
February 202641059.5%29.0%0.7%
March 202645052.9%26.0%11.3%
April 202651655.8%25.0%10.1%
May 202651770.6%20.7%1.0%
June 202641663.0%27.6%3.8%

What drove ORD to MKE delay minutes?

Airline was the largest recorded ORD-to-MKE delay category, accounting for 38.6% of 164,861 BTS-attributed delay minutes during July 2025–June 2026.

Airline38.6%
Late aircraft28.5%
National airspace16.3%
Weather16.6%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.