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

Champaign/Urbana, IL (CMI) to Chicago, IL (ORD) flight delay odds

72.2% of 1,042 official scheduled CMI-to-ORD flights arrived on time; 17.9% arrived at least 30 minutes late and 3.7% 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 SIGNALVariable
72.2%arrived on time
17.9%30+ min late
3.7%cancelled
1,042scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late11.3%all scheduled flights
120+ minutes late5.1%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+12.6 mincompleted flights

Which departure time was most reliable for CMI to ORD?

Among qualifying CMI-to-ORD departure window results, Early morning had the highest on-time rate: 83.5% of 316 flights. Evening was lowest at 56.3% across 245 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning31683.5%10.1%1.6%
Late morning27476.6%18.6%1.5%
Afternoon20767.6%18.4%3.9%
Evening24556.3%26.9%9.0%

Which weekday was most reliable for CMI to ORD?

Among qualifying CMI-to-ORD weekday results, Saturday had the highest on-time rate: 78.7% of 150 flights. Sunday was lowest at 63.6% across 165 flights.

DayFlightsOn time30+ minCancelled
Monday16172.0%18.0%4.3%
Tuesday10371.8%16.5%1.9%
Wednesday14475.0%15.3%2.8%
Thursday16271.0%19.8%3.7%
Friday15773.9%15.3%4.5%
Saturday15078.7%15.3%3.3%
Sunday16563.6%24.2%4.8%

Which airline was most reliable for CMI to ORD?

Only Envoy Air met the CMI-to-ORD airline threshold: 72.2% of 1,042 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Envoy Air1,04272.2%17.9%3.7%

Which month was most reliable for CMI to ORD?

Among qualifying CMI-to-ORD month results, September 2025 had the highest on-time rate: 83.8% of 68 flights. December 2025 was lowest at 61.9% across 97 flights.

MonthFlightsOn time30+ minCancelled
July 20256965.2%26.1%5.8%
August 20258472.6%11.9%3.6%
September 20256883.8%11.8%0.0%
October 202510370.9%22.3%0.0%
November 202510473.1%13.5%10.6%
December 20259761.9%29.9%6.2%
January 20268772.4%20.7%1.1%
February 20268076.2%12.5%0.0%
March 20268469.0%16.7%6.0%
April 20268673.3%17.4%4.7%
May 20269078.9%13.3%1.1%
June 20269071.1%17.8%4.4%

What drove CMI to ORD delay minutes?

Late aircraft was the largest recorded CMI-to-ORD delay category, accounting for 48.3% of 21,420 BTS-attributed delay minutes during July 2025–June 2026.

Airline22.4%
Late aircraft48.3%
National airspace26.9%
Weather2.4%
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.