Best Time to Fly BGR to ORD: On-Time Stats by Hour & Airline
Bangor International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
697 flights were scheduled from Bangor (BGR) to Chicago (ORD) in the last 12 months, and 78.1% of those that flew arrived on time, in line with the US average of 77.6%.
Among 4 airlines, Envoy Air led with 85.0% on time and American Airlines was last with 75.1%.
Over 24 months, Tuesday was the most reliable day (82% on time) and August the worst month (68%).
The cancellation rate was 1.7% (US average 1.8%).
BGR 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 | 85.0% | 71 min | 0.0% | 107 |
| Republic Airways | 79.9% | 91 min | 1.4% | 222 |
| SkyWest Airlines | 75.2% | 94 min | 2.8% | 141 |
| American Airlines | 75.1% | 173 min | 2.2% | 222 |
| United Airlines | Limited data | 5 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BGR to ORD
On-time arrival % by scheduled departure hour (local time), 1,122 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 1 | |
| 6am–7am | 85.5% | 0.0% | 145 |
| 7am–8am | 95.9% | 2.0% | 50 |
| 9am–10am | 92.5% | 0.0% | 106 |
| 11am–12pm | Limited data | 1 | |
| 12pm–1pm | 79.3% | 1.0% | 293 |
| 2pm–3pm | Limited data | 6 | |
| 4pm–5pm | 73.4% | 1.7% | 302 |
| 5pm–6pm | 47.1% | 1.0% | 193 |
| 6pm–7pm | Limited data | 25 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BGR to ORD
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Summer peak (Jun 15 - Aug 15) | 71.3% | -5.8 pts | 1.1% | 458 |
| All other days | 77.1% | — | 1.2% | 664 |
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).