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

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

76.1% of 1,137 official scheduled BHM-to-ORD flights arrived on time; 15.9% arrived at least 30 minutes late and 1.5% 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
76.1%arrived on time
15.9%30+ min late
1.5%cancelled
1,137scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.7%all scheduled flights
120+ minutes late3.8%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+10.2 mincompleted flights

Which departure time was most reliable for BHM to ORD?

Among qualifying BHM-to-ORD departure window results, Early morning had the highest on-time rate: 84.5% of 432 flights. Evening was lowest at 59.6% across 225 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning43284.5%10.2%0.7%
Late morning29479.3%14.6%1.4%
Afternoon18671.5%20.4%1.1%
Evening22559.6%24.9%3.6%

Which weekday was most reliable for BHM to ORD?

Among qualifying BHM-to-ORD weekday results, Tuesday had the highest on-time rate: 84.4% of 154 flights. Saturday was lowest at 71.2% across 153 flights.

DayFlightsOn time30+ minCancelled
Monday16975.1%15.4%3.6%
Tuesday15484.4%10.4%0.0%
Wednesday15777.1%14.6%0.6%
Thursday16579.4%12.1%0.6%
Friday16873.8%17.9%1.8%
Saturday15371.2%20.9%2.6%
Sunday17171.9%19.9%1.2%

Which airline was most reliable for BHM to ORD?

Among qualifying BHM-to-ORD airline results, Republic Airways had the highest on-time rate: 83.6% of 256 flights. SkyWest Airlines was lowest at 53.7% across 108 flights.

AirlineFlightsOn time30+ minCancelled
Envoy Air77176.7%15.7%1.4%
Republic Airways25683.6%10.9%1.2%
SkyWest Airlines10853.7%29.6%2.8%
PSA Airlines2100.0%0.0%0.0%

Which month was most reliable for BHM to ORD?

Among qualifying BHM-to-ORD month results, September 2025 had the highest on-time rate: 86.1% of 122 flights. December 2025 was lowest at 68.9% across 74 flights.

MonthFlightsOn time30+ minCancelled
July 20258373.5%18.1%1.2%
August 202510784.1%11.2%1.9%
September 202512286.1%10.7%0.0%
October 202511376.1%14.2%0.0%
November 20258576.5%16.5%3.5%
December 20257468.9%21.6%0.0%
January 20267577.3%16.0%0.0%
February 202612475.8%13.7%0.0%
March 202610271.6%17.6%4.9%
April 20269172.5%19.8%2.2%
May 202610170.3%18.8%3.0%
June 20266075.0%18.3%1.7%

What drove BHM to ORD delay minutes?

Late aircraft was the largest recorded BHM-to-ORD delay category, accounting for 34.7% of 21,150 BTS-attributed delay minutes during July 2025–June 2026.

Airline26.8%
Late aircraft34.7%
National airspace25.2%
Weather13.4%
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.