Chicago (ORD) to Rochester (ROC): On-Time Performance
Data through May 2026
When you fly ORD to ROC matters as much as anything else about the booking: the route swung from 86% on-time in November 2024 to just 64% in February 2026. Across the full period the route averages 76% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 69%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 1.5%
- Flights/day
- 6.2
- last 12 months
- Duration
- 1h 50m
- scheduled
- Distance
- 528 mi
Best airline from ORD to ROC
4 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 80% | 14 min | 1.9% | 832 |
| Envoy Air | 80% | 12 min | 1.5% | 1,771 |
| United Airlines | 70% | 20 min | 0.9% | 1,177 |
| SkyWest Airlines | 67% | 24 min | 2.9% | 205 |
Monthly on-time trend
Best time to fly from ORD to ROC
Aim for departures around 9 a.m. (88% on-time); avoid 6 p.m. departures (67%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 79% | 14 min |
| Tuesday | 78% | 13 min |
| Wednesday | 77% | 15 min |
| Thursday | 78% | 14 min |
| Friday | 74% | 17 min |
| Saturday | 77% | 14 min |
| Sunday | 70% | 23 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft43%
- Airline operations26%
- National airspace system22%
- Weather9%
Frequently asked questions
- How often are flights from ORD to ROC delayed?
- 24% of ORD–ROC flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 16 minutes.
- Which airline is most reliable from ORD to ROC?
- Republic Airways has the best on-time record on this route at 80%, based on 832 flights. 4 airlines flew ORD–ROC frequently enough to compare in this period.
- What is the best time of day to fly from ORD to ROC?
- Departures around 9 a.m. have the best record (88% on-time), while departures around 6 p.m. have the worst (67%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ORD to ROC?
- The scheduled ORD–ROC flight time averages 1h 50m over 528 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are ORD to ROC flights cancelled?
- 1.5% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from ORD to ROC?
- February 2026 was the roughest month in this dataset, with only 64% of arrivals on time. The best was November 2024 at 86%. If your dates are flexible, that 22-point gap is worth planning around.
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Based on 3,985 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.