Best Time to Fly AZO to ORD: On-Time Stats by Hour & Airline
Kalamazoo/Battle Creek International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 79.5% of Kalamazoo (AZO) to Chicago (ORD) flights arrived on time (964 scheduled flights). That is 1.9 points above the national average of 77.6%.
Among 2 airlines, Envoy Air led with 80.2% on time and SkyWest Airlines was last with 76.0%.
Over 24 months, Saturday was the most reliable day (82% on time) and December the worst month (67%).
The cancellation rate was 4.7% (US average 1.8%).
AZO to ORD on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Air | 80.2% | 79 min | 4.1% | 802 |
| SkyWest Airlines | 76.0% | 96 min | 7.4% | 162 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly AZO to ORD
On-time arrival % by scheduled departure hour (local time), 1,125 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 85.8% | 5.4% | 112 |
| 6am–7am | 88.0% | 2.2% | 179 |
| 7am–8am | 82.9% | 1.7% | 119 |
| 8am–9am | Limited data | 5 | |
| 9am–10am | Limited data | 2 | |
| 10am–11am | 87.7% | 3.1% | 193 |
| 11am–12pm | Limited data | 15 | |
| 12pm–1pm | 75.8% | 4.2% | 95 |
| 3pm–4pm | 70.1% | 8.3% | 84 |
| 4pm–5pm | 73.4% | 8.1% | 86 |
| 5pm–6pm | 74.4% | 3.3% | 121 |
| 6pm–7pm | Limited data | 8 | |
| 7pm–8pm | 60.0% | 9.4% | 106 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on AZO to ORD
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 19 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 70.3% | -9.4 pts | 9.8% | 41 |
| Summer peak (Jun 15 - Aug 15) | 79.7% | +0.0 pts | 4.8% | 269 |
| All other days | 79.7% | — | 3.5% | 796 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).