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

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

76.0% of 484 official scheduled MDW-to-BHM flights arrived on time; 12.4% arrived at least 30 minutes late and 1.2% 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
76.0%arrived on time
12.4%30+ min late
1.2%cancelled
484scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.0%all scheduled flights
120+ minutes late2.5%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+5.1 mincompleted flights

Which departure time was most reliable for MDW to BHM?

Among qualifying MDW-to-BHM departure window results, Early morning had the highest on-time rate: 82.8% of 116 flights. Night was lowest at 63.3% across 49 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning11682.8%9.5%0.9%
Late morning5881.0%10.3%1.7%
Afternoon9866.3%14.3%2.0%
Evening16379.1%9.2%1.2%
Night4963.3%28.6%0.0%

Which weekday was most reliable for MDW to BHM?

Among qualifying MDW-to-BHM weekday results, Tuesday had the highest on-time rate: 84.6% of 65 flights. Monday was lowest at 62.7% across 75 flights.

DayFlightsOn time30+ minCancelled
Monday7562.7%20.0%2.7%
Tuesday6584.6%7.7%0.0%
Wednesday6280.6%9.7%1.6%
Thursday7477.0%4.1%2.7%
Friday7675.0%10.5%0.0%
Saturday4776.6%12.8%2.1%
Sunday8577.6%20.0%0.0%

Which airline was most reliable for MDW to BHM?

Only Southwest Airlines met the MDW-to-BHM airline threshold: 76.0% of 484 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines48476.0%12.4%1.2%

Which month was most reliable for MDW to BHM?

Among qualifying MDW-to-BHM month results, February 2026 had the highest on-time rate: 92.6% of 27 flights. July 2025 was lowest at 63.2% across 57 flights.

MonthFlightsOn time30+ minCancelled
July 20255763.2%26.3%1.8%
August 20254979.6%8.2%2.0%
September 20254783.0%8.5%0.0%
October 20255680.4%8.9%0.0%
November 20254582.2%11.1%4.4%
December 20254463.6%20.5%0.0%
January 20263090.0%6.7%0.0%
February 20262792.6%3.7%0.0%
March 20263171.0%16.1%3.2%
April 20263375.8%9.1%0.0%
May 20263568.6%8.6%0.0%
June 20263070.0%13.3%3.3%

What drove MDW to BHM delay minutes?

Late aircraft was the largest recorded MDW-to-BHM delay category, accounting for 52.1% of 5,537 BTS-attributed delay minutes during July 2025–June 2026.

Airline32.2%
Late aircraft52.1%
National airspace12.4%
Weather3.3%
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.