Chicago (ORD) to Rochester (ROC): On-Time Performance
Data through July 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 (85% vs 69%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 1.7%
- Flights/day
- 6.4
- last 12 months
- Duration
- 1h 50m
- scheduled
- Distance
- 528 mi
Best airline from ORD to ROC
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 81% | 13 min | 1.9% | 917 |
| Envoy Air | 80% | 12 min | 1.6% | 1,860 |
| United Airlines | 68% | 21 min | 1.1% | 1,228 |
| SkyWest Airlines | 65% | 28 min | 4.8% | 312 |
Monthly on-time trend
Best time to fly from ORD to ROC
Aim for departures around 11 a.m. (88% on-time); avoid 5 p.m. departures (60%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 79% | 14 min |
| Tuesday | 79% | 12 min |
| Wednesday | 76% | 17 min |
| Thursday | 78% | 13 min |
| Friday | 74% | 18 min |
| Saturday | 77% | 14 min |
| Sunday | 70% | 25 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 system21%
- Weather10%
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 2024-07 and 2026-07. 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 81%, based on 917 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 11 a.m. have the best record (88% on-time), while departures around 5 p.m. have the worst (60%). 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?
- 1.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above 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 4,317 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.