Atlanta (ATL) to Rochester (ROC): On-Time Performance
Data through July 2026
The calendar drives reliability on ATL–ROC. September 2024 flights landed on schedule 91% of the time, but December 2025 dropped to 55% — a gap of 37 points. Across the full period the route averages 76% on-time against a national 78%. Morning departures also hold up better than evening ones (82% vs 72%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 2.0%
- Flights/day
- 2.9
- last 12 months
- Duration
- 2h 4m
- scheduled
- Distance
- 749 mi
Monthly on-time trend
Best time to fly from ATL to ROC
Aim for departures around 11 a.m. (84% on-time); avoid 10 p.m. departures (68%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 72% | 18 min |
| Tuesday | 79% | 14 min |
| Wednesdaybest | 81% | 10 min |
| Thursday | 79% | 13 min |
| Friday | 75% | 14 min |
| Saturday | 78% | 16 min |
| Sunday | 66% | 26 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft26%
- Airline operations57%
- National airspace system13%
- Weather4%
Frequently asked questions
- How often are flights from ATL to ROC delayed?
- 25% of ATL–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.
- What is the best time of day to fly from ATL to ROC?
- Departures around 11 a.m. have the best record (84% on-time), while departures around 10 p.m. have the worst (68%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ATL to ROC?
- The scheduled ATL–ROC flight time averages 2h 4m over 749 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are ATL to ROC flights cancelled?
- 2% 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 ATL to ROC?
- December 2025 was the roughest month in this dataset, with only 55% of arrivals on time. The best was September 2024 at 91%. If your dates are flexible, that 37-point gap is worth planning around.
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Based on 2,167 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.