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

Kalamazoo, MI (AZO) to Chicago, IL (ORD) flight delay odds

76.3% of 990 official scheduled AZO-to-ORD flights arrived on time; 13.3% arrived at least 30 minutes late and 4.2% 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 SIGNALHigher disruption
76.3%arrived on time
13.3%30+ min late
4.2%cancelled
990scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.4%all scheduled flights
120+ minutes late4.0%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+3.9 mincompleted flights

Which departure time was most reliable for AZO to ORD?

Among qualifying AZO-to-ORD departure window results, Late morning had the highest on-time rate: 83.5% of 188 flights. Evening was lowest at 65.1% across 209 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning35983.3%8.4%2.5%
Late morning18883.5%8.0%3.2%
Afternoon23469.7%17.9%6.0%
Evening20965.1%21.5%6.2%

Which weekday was most reliable for AZO to ORD?

Among qualifying AZO-to-ORD weekday results, Saturday had the highest on-time rate: 82.4% of 136 flights. Monday was lowest at 69.7% across 145 flights.

DayFlightsOn time30+ minCancelled
Monday14569.7%17.2%6.2%
Tuesday14378.3%11.9%2.1%
Wednesday13877.5%10.1%4.3%
Thursday14178.0%13.5%3.5%
Friday14276.1%12.7%4.2%
Saturday13682.4%12.5%2.2%
Sunday14572.4%15.2%6.9%

Which airline was most reliable for AZO to ORD?

Among qualifying AZO-to-ORD airline results, Envoy Air had the highest on-time rate: 76.7% of 890 flights. SkyWest Airlines was lowest at 72.0% across 100 flights.

AirlineFlightsOn time30+ minCancelled
Envoy Air89076.7%13.0%4.2%
SkyWest Airlines10072.0%16.0%5.0%

Which month was most reliable for AZO to ORD?

Among qualifying AZO-to-ORD month results, September 2025 had the highest on-time rate: 89.5% of 86 flights. December 2025 was lowest at 62.9% across 89 flights.

MonthFlightsOn time30+ minCancelled
July 20258876.1%11.4%4.5%
August 20258585.9%8.2%2.4%
September 20258689.5%9.3%1.2%
October 20259180.2%11.0%0.0%
November 20258774.7%6.9%13.8%
December 20258962.9%20.2%6.7%
January 20266668.2%16.7%3.0%
February 20267379.5%16.4%0.0%
March 20269371.0%16.1%5.4%
April 20269073.3%15.6%5.6%
May 20267982.3%13.9%1.3%
June 20266369.8%15.9%6.3%

What drove AZO to ORD delay minutes?

Late aircraft was the largest recorded AZO-to-ORD delay category, accounting for 43.3% of 15,242 BTS-attributed delay minutes during July 2025–June 2026.

Airline17.8%
Late aircraft43.3%
National airspace34.4%
Weather4.1%
Security0.4%
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.