Best Time to Fly BMI to ORD: On-Time Stats by Hour & Airline
Central Il Regional Airport at Bloomington → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.6% of Bloomington/Normal (BMI) to Chicago (ORD) flights arrived on time (879 scheduled flights). That is 4.9 points above the national average of 77.6%.
Envoy Air was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (88% on time) and December the worst month (64%).
The cancellation rate was 3.4% (US average 1.8%).
BMI 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 | 82.6% | 103 min | 3.4% | 879 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BMI to ORD
On-time arrival % by scheduled departure hour (local time), 1,147 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 89.2% | 1.5% | 263 |
| 6am–7am | 88.0% | 1.1% | 177 |
| 7am–8am | Limited data | 3 | |
| 8am–9am | 87.2% | 0.0% | 39 |
| 10am–11am | Limited data | 4 | |
| 11am–12pm | 78.7% | 2.5% | 197 |
| 12pm–1pm | Limited data | 4 | |
| 2pm–3pm | 84.1% | 2.6% | 194 |
| 3pm–4pm | 81.8% | 3.5% | 57 |
| 4pm–5pm | 80.0% | 0.0% | 65 |
| 5pm–6pm | 64.5% | 3.1% | 32 |
| 6pm–7pm | 79.0% | 7.5% | 67 |
| 7pm–8pm | Limited data | 11 | |
| 8pm–9pm | Limited data | 34 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BMI 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 | 18 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 76.7% | -7.2 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 83.2% | -0.6 pts | 4.1% | 218 |
| All other days | 83.9% | — | 2.0% | 881 |
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).