Best Time to Fly ORD to BGR: On-Time Stats by Hour & Airline
Chicago O'Hare International → Bangor International
Data through July 2026 · Last updated October 18, 2026
697 flights were scheduled from Chicago (ORD) to Bangor (BGR) in the last 12 months, and 77.3% of those that flew arrived on time, in line with the US average of 77.6%.
Envoy Air was the most punctual of the 4 airlines on the route at 86.8%, while American Airlines trailed at 67.9%.
September has been the best month (87% on time) and Monday the weakest day of the week (71%).
1.7% of flights were cancelled, versus 1.8% nationally.
ORD to BGR 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 | 86.8% | 56 min | 0.0% | 107 |
| Republic Airways | 84.7% | 52 min | 1.4% | 220 |
| SkyWest Airlines | 73.0% | 78 min | 2.8% | 142 |
| American Airlines | 67.9% | 112 min | 2.2% | 223 |
| United Airlines | Limited data | 5 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to BGR
On-time arrival % by scheduled departure hour (local time), 1,122 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 84.3% | 0.3% | 288 |
| 9am–10am | Limited data | 9 | |
| 10am–11am | Limited data | 8 | |
| 11am–12pm | 87.5% | 0.3% | 300 |
| 12pm–1pm | Limited data | 6 | |
| 1pm–2pm | 74.2% | 0.5% | 218 |
| 5pm–6pm | 67.8% | 2.5% | 118 |
| 6pm–7pm | 74.7% | 2.1% | 93 |
| 7pm–8pm | 52.6% | 4.9% | 82 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ORD to BGR
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) | 75.0% | -5.9 pts | 1.1% | 458 |
| All other days | 80.9% | — | 1.1% | 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).