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

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

Historically, 76.1% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,137 flights.

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

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

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%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

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%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 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%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

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 reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

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.