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

Birmingham, AL (BHM) to Chicago, IL (MDW) flight delay odds

84.1% of 483 official scheduled BHM-to-MDW flights arrived on time; 8.7% arrived at least 30 minutes late and 1.0% 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
84.1%arrived on time
8.7%30+ min late
1.0%cancelled
483scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.9%all scheduled flights
120+ minutes late1.2%all scheduled flights
Diverted0.8%did not reach as scheduled
Average arrival+1.8 mincompleted flights

Which departure time was most reliable for BHM to MDW?

Among qualifying BHM-to-MDW departure window results, Early morning had the highest on-time rate: 91.0% of 255 flights. Afternoon was lowest at 68.9% across 90 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning25591.0%5.5%0.8%
Late morning7085.7%5.7%1.4%
Afternoon9068.9%16.7%1.1%
Evening6876.5%13.2%1.5%

Which weekday was most reliable for BHM to MDW?

Among qualifying BHM-to-MDW weekday results, Wednesday had the highest on-time rate: 95.2% of 62 flights. Sunday was lowest at 74.1% across 85 flights.

DayFlightsOn time30+ minCancelled
Monday7582.7%8.0%2.7%
Tuesday6584.6%9.2%0.0%
Wednesday6295.2%1.6%0.0%
Thursday7387.7%4.1%1.4%
Friday7685.5%7.9%1.3%
Saturday4780.9%12.8%2.1%
Sunday8574.1%16.5%0.0%

Which airline was most reliable for BHM to MDW?

Only Southwest Airlines met the BHM-to-MDW airline threshold: 84.1% of 483 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines48384.1%8.7%1.0%

Which month was most reliable for BHM to MDW?

Among qualifying BHM-to-MDW month results, April 2026 had the highest on-time rate: 93.9% of 33 flights. November 2025 was lowest at 73.3% across 45 flights.

MonthFlightsOn time30+ minCancelled
July 20255787.7%10.5%0.0%
August 20254877.1%10.4%4.2%
September 20254791.5%4.3%0.0%
October 20255682.1%10.7%0.0%
November 20254573.3%11.1%4.4%
December 20254481.8%11.4%0.0%
January 20263090.0%0.0%0.0%
February 20262788.9%11.1%0.0%
March 20263180.6%9.7%3.2%
April 20263393.9%3.0%0.0%
May 20263580.0%5.7%0.0%
June 20263086.7%13.3%0.0%

What drove BHM to MDW delay minutes?

Late aircraft was the largest recorded BHM-to-MDW delay category, accounting for 36.1% of 3,827 BTS-attributed delay minutes during July 2025–June 2026.

Airline35.5%
Late aircraft36.1%
National airspace28.5%
Weather0.0%
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.