Route on-time record
ROC to ATL: most on-time flights and the best time to fly
Rochester (Frederick Douglass Greater Rochester International Airport) to Atlanta (Hartsfield Jackson Atlanta International Airport). 1,043 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 2.7% were cancelled. The most reliable flight number was Delta 1200 at 6:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
ROC → ATL
Rochester to Atlanta: 1,043 nonstop flights a year
On time (12 months)
80%
Cancelled
2.7%
avg delay 14 min
Best time to leave
Before 9 AM
86% on time vs 74% 6 to 9 PM
Most reliable airline
Delta
78% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Delta 1200
6:00 AM → 8:22 AM2h 17m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 86%
- Cancelled
- 4.4%
- Avg arrival delay
- 12 min
- Arrived on time 86% of the time (348 flights, Jun 2025 to May 2026).
- Cancelled 4.4% of the time (16 of 365).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 6 to 9 PM: 74%).
Strong track record · 348 flights
Find Delta 1200 fares Opens this date on Aviasales#2 · Delta 2511
12:52 PM → 3:09 PM2h 17m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 79%
- Cancelled
- 2.1%
- Avg arrival delay
- 13 min
- Arrived on time 79% of the time (329 flights, Jun 2025 to May 2026).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
- 51% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 329 flights
Find Delta 2511 fares Opens this date on Aviasales#3 · Delta 2047
6:16 PM → 8:45 PM2h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
72%
chance on time
- On time (history)
- 74%
- Cancelled
- 1.6%
- Avg arrival delay
- 19 min
- Arrived on time 74% of the time (310 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 74% on time; Before 9 AM: 86%).
- 65% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 310 flights
Find Delta 2047 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines78%
1,043 flights · 80% on time as flown · 2.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM86%
365 flights · avg delay 12 min
- Noon to 3 PM79%
361 flights · avg delay 13 min
- 6 to 9 PM74%
317 flights · avg delay 19 min
Best day: Tuesday (85%). Worst: Sunday (76%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft45%
- Airline (crew, maintenance, boarding)27%
- Air traffic control and airport volume16%
- Severe weather12%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
ROC to ATL questions
- What time of day is best to fly ROC to ATL?
- Before 9 AM: 86% of flights arrived on time, against 74% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from ROC to ATL?
- Delta, with a season-adjusted 78% chance of operating and arriving on time over 1,043 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on ROC to ATL?
- December (72% on time); the best was September (92%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from ROC
- ATL to ROC (return)
- ROC to ORD 74%
- ROC to BWI 83%
- ROC to DCA 68%
- ROC to CLT 81%
- ROC to JFK 82%
- ROC to EWR 81%
- ROC to MCO 68%
- ROC to DTW 78%
- ROC to MDW 82%
Live status: FAA delays and ground stops