Route Reliability
Chicago → CMI
ORD–CMI · 135 miles · Chicago O'Hare International Airport to CMI Airport
- 71%
- Arrive within 15 minutes
- 11 min
- Average arrival delay
- 3.3%
- Cancelled
- 1,024
- Flights in the data
Data through May 2026.
American Airlines is the only airline in this data on this route, arriving on time 71% of the time across 1,024 flights. No comparison to make.
What the data says
The 12–3 PM departure wins.
ORD–CMI flights departing between 12–3 PM arrived on time 81% of the time, versus 64% between 3–6 PM.
Skip Thursday if you can.
ORD–CMI flights arrived on time 79% of the time on Tuesdays. On Thursdays: 65%.
Keep a backup plan handy.
This route was cancelled 3.3% of the time. Typical for U.S. flights is around 1–2%.
Trending in the right direction.
ORD–CMI flights arrived on time 77% of the time over the last three months in the data, compared with 61% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon69%(151 flights)
- Tue79%(92 flights)
- Wed70%(138 flights)
- Thu65%(158 flights)
- Fri72%(151 flights)
- Sat76%(139 flights)
- Sun71%(160 flights)
- 6–9 AM73%(45 flights)
- 9 AM–12 PM77%(219 flights)
- 12–3 PM81%(207 flights)
- 3–6 PM64%(159 flights)
- 6–9 PM65%(359 flights)
Jun 63% → May 86% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 63% | 71 |
| July 2025 | 64% | 67 |
| August 2025 | 74% | 81 |
| September 2025 | 85% | 68 |
| October 2025 | 73% | 103 |
| November 2025 | 77% | 93 |
| December 2025 | 58% | 91 |
| January 2026 | 57% | 86 |
| February 2026 | 69% | 80 |
| March 2026 | 74% | 78 |
| April 2026 | 71% | 83 |
| May 2026 | 86% | 88 |
Keep nerding
Based on 1,024 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.