Route
CMI → ORD
University of Illinois Willard Airport Chicago O'Hare International Airport
How punctual is this route?
- On-time arrivals
- 76.0%
- Less than 15 minutes late
- Cancelled
- 3.8%
- Of scheduled flights
- Average delay when late
- 106 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,075
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 41%
- Airline (crew, maintenance, cleaning) 33%
- Air traffic control & airport 24%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 83.8% | 68 |
| October 2025 | 70.9% | 103 |
| November 2025 | 81.7% | 104 |
| December 2025 | 65.9% | 97 |
| January 2026 | 73.3% | 87 |
| February 2026 | 76.2% | 80 |
| March 2026 | 73.4% | 84 |
| April 2026 | 76.8% | 86 |
| May 2026 | 79.8% | 90 |
| June 2026 | 74.4% | 90 |
| July 2026 | 81.1% | 93 |
| August 2026 | 77.0% | 93 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Envoy Air | 1,075 | 76.0% | 3.8% | 106 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
MQ3609
12% late · 184 flights
-
MQ3421
14% late · 141 flights
-
MQ3492
15% late · 89 flights
-
MQ3484
41% late · 82 flights
-
MQ3476
25% late · 76 flights
-
MQ3477
30% late · 76 flights
-
MQ3536
39% late · 70 flights
-
MQ4011
25% late · 65 flights
-
MQ4298
43% late · 61 flights
-
MQ3529
14% late · 44 flights
-
MQ4002
34% late · 36 flights
-
MQ4000
30% late · 32 flights
-
MQ3419
27% late · 26 flights
-
MQ3436
32% late · 22 flights
-
MQ3433
33% late · 20 flights
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