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

Milwaukee, WI (MKE) to St. Louis, MO (STL) flight delay odds

88.1% of 683 official scheduled MKE-to-STL flights arrived on time; 6.7% arrived at least 30 minutes late and 0.9% 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 SIGNALLower disruption
88.1%arrived on time
6.7%30+ min late
0.9%cancelled
683scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.1%all scheduled flights
120+ minutes late1.5%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival-3.3 mincompleted flights

Which departure time was most reliable for MKE to STL?

Among qualifying MKE-to-STL departure window results, Early morning had the highest on-time rate: 94.3% of 353 flights. Evening was lowest at 76.9% across 169 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning35394.3%2.3%1.4%
Afternoon15986.2%9.4%0.0%
Evening16976.9%13.6%0.6%

Which weekday was most reliable for MKE to STL?

Among qualifying MKE-to-STL weekday results, Saturday had the highest on-time rate: 96.1% of 77 flights. Thursday was lowest at 83.3% across 102 flights.

DayFlightsOn time30+ minCancelled
Monday10484.6%6.7%1.9%
Tuesday10690.6%4.7%0.9%
Wednesday10488.5%6.7%0.0%
Thursday10283.3%9.8%1.0%
Friday10288.2%8.8%0.0%
Saturday7796.1%2.6%1.3%
Sunday8887.5%6.8%1.1%

Which airline was most reliable for MKE to STL?

Only Southwest Airlines met the MKE-to-STL airline threshold: 88.1% of 683 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines68388.1%6.7%0.9%

Which month was most reliable for MKE to STL?

Among qualifying MKE-to-STL month results, February 2026 had the highest on-time rate: 98.1% of 52 flights. March 2026 was lowest at 74.1% across 54 flights.

MonthFlightsOn time30+ minCancelled
July 20255786.0%8.8%0.0%
August 20256088.3%6.7%0.0%
September 20256095.0%1.7%0.0%
October 20255796.5%1.8%0.0%
November 20255490.7%5.6%1.9%
December 20255882.8%10.3%0.0%
January 20265784.2%3.5%3.5%
February 20265298.1%1.9%0.0%
March 20265474.1%14.8%5.6%
April 20265893.1%3.4%0.0%
May 20266185.2%9.8%0.0%
June 20265583.6%12.7%0.0%

What drove MKE to STL delay minutes?

Late aircraft was the largest recorded MKE-to-STL delay category, accounting for 49.5% of 4,566 BTS-attributed delay minutes during July 2025–June 2026.

Airline38.8%
Late aircraft49.5%
National airspace10.4%
Weather1.3%
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.