Route Reliability
CMI → Chicago
CMI–ORD · 135 miles · CMI Airport to Chicago O'Hare International Airport
- 75%
- Arrive within 15 minutes
- 11 min
- Average arrival delay
- 3.5%
- 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 75% of the time across 1,024 flights. No comparison to make.
What the data says
Morning-you made the right choice.
CMI–ORD flights departing between 3–6 AM arrived on time 88% of the time, versus 60% between 6–9 PM.
Sunday scaries are real for this one.
CMI–ORD flights arrived on time 82% of the time on Saturdays. On Sundays: 69%.
Keep a backup plan handy.
This route was cancelled 3.5% of the time. Typical for U.S. flights is around 1–2%.
Ticking up lately.
CMI–ORD flights arrived on time 77% of the time over the last three months in the data, compared with 72% 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
- Mon76%(151 flights)
- Tue74%(91 flights)
- Wed77%(138 flights)
- Thu74%(158 flights)
- Fri76%(150 flights)
- Sat82%(141 flights)
- Sun69%(159 flights)
- 3–6 AM88%(25 flights)
- 6–9 AM85%(283 flights)
- 9 AM–12 PM79%(245 flights)
- 12–3 PM76%(146 flights)
- 3–6 PM62%(82 flights)
- 6–9 PM60%(207 flights)
Jun 75% → May 80% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 75% | 71 |
| July 2025 | 69% | 65 |
| August 2025 | 77% | 81 |
| September 2025 | 84% | 68 |
| October 2025 | 71% | 103 |
| November 2025 | 82% | 93 |
| December 2025 | 66% | 91 |
| January 2026 | 73% | 86 |
| February 2026 | 76% | 80 |
| March 2026 | 73% | 79 |
| April 2026 | 78% | 82 |
| May 2026 | 80% | 89 |
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.