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

Atlanta, GA (ATL) to Milwaukee, WI (MKE) flight delay odds

81.6% of 2,267 official scheduled ATL-to-MKE flights arrived on time; 9.4% arrived at least 30 minutes late and 1.8% 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 SIGNALGenerally reliable
81.6%arrived on time
9.4%30+ min late
1.8%cancelled
2,267scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.8%all scheduled flights
120+ minutes late1.3%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+2.3 mincompleted flights

Which departure time was most reliable for ATL to MKE?

Among qualifying ATL-to-MKE departure window results, Early morning had the highest on-time rate: 87.2% of 368 flights. Evening was lowest at 72.5% across 364 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning36887.2%5.7%2.4%
Late morning36684.7%7.9%1.6%
Afternoon80482.8%8.5%2.0%
Evening36472.5%15.4%0.8%
Night36579.2%11.0%1.6%

Which weekday was most reliable for ATL to MKE?

Among qualifying ATL-to-MKE weekday results, Wednesday had the highest on-time rate: 86.0% of 299 flights. Monday was lowest at 75.3% across 360 flights.

DayFlightsOn time30+ minCancelled
Monday36075.3%13.6%3.1%
Tuesday30284.1%7.0%0.3%
Wednesday29986.0%7.0%0.0%
Thursday32883.2%9.5%0.0%
Friday35680.3%12.1%1.7%
Saturday29685.1%5.7%3.0%
Sunday32678.8%9.8%4.0%

Which airline was most reliable for ATL to MKE?

Among qualifying ATL-to-MKE airline results, Delta Air Lines had the highest on-time rate: 82.4% of 2,205 flights. Frontier Airlines was lowest at 51.6% across 62 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines2,20582.4%9.0%1.8%
Frontier Airlines6251.6%25.8%0.0%

Which month was most reliable for ATL to MKE?

Among qualifying ATL-to-MKE month results, September 2025 had the highest on-time rate: 91.4% of 187 flights. March 2026 was lowest at 72.0% across 182 flights.

MonthFlightsOn time30+ minCancelled
July 202519981.9%11.6%0.0%
August 202519880.8%11.1%1.0%
September 202518791.4%4.8%0.0%
October 202520189.1%7.0%0.0%
November 202517684.7%6.2%1.7%
December 202518372.1%13.7%3.3%
January 202616977.5%10.1%5.3%
February 202616284.6%9.3%0.0%
March 202618272.0%14.3%5.5%
April 202619381.9%6.2%2.6%
May 202621682.4%8.3%1.4%
June 202620180.1%10.9%1.0%

What drove ATL to MKE delay minutes?

Airline was the largest recorded ATL-to-MKE delay category, accounting for 50.1% of 18,725 BTS-attributed delay minutes during July 2025–June 2026.

Airline50.1%
Late aircraft27.4%
National airspace16.6%
Weather5.7%
Security0.2%
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.