Route on-time record
ATL to ROC: most on-time flights and the best time to fly
Atlanta (Hartsfield Jackson Atlanta International Airport) to Rochester (Frederick Douglass Greater Rochester International Airport). 1,043 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 2.6% were cancelled. The most reliable flight number was Delta 2511 at 9:48 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
ATL → ROC
Atlanta to Rochester: 1,043 nonstop flights a year
On time (12 months)
76%
Cancelled
2.6%
avg delay 14 min
Best time to leave
9 AM to noon
81% on time vs 72% after 9 PM
Most reliable airline
Delta
74% 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 2511
9:48 AM → 11:55 AM2h 07m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 81%
- Cancelled
- 1.8%
- Avg arrival delay
- 10 min
- Arrived on time 81% of the time (330 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 81% on time; After 9 PM: 72%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Strong track record · 330 flights
Find Delta 2511 fares Opens this date on Aviasales#2 · Delta 2047
3:18 PM → 5:21 PM2h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
72%
chance on time
- On time (history)
- 73%
- Cancelled
- 1.6%
- Avg arrival delay
- 17 min
- Arrived on time 73% of the time (311 flights, Jun 2025 to May 2026).
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 311 flights
Find Delta 2047 fares Opens this date on Aviasales#3 · Delta 2472
9:56 PM → 11:59 PM2h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
69%
chance on time
- On time (history)
- 72%
- Cancelled
- 4.4%
- Avg arrival delay
- 17 min
- Arrived on time 72% of the time (348 flights, Jun 2025 to May 2026).
- Cancelled 4.4% of the time (16 of 365).
- Leaves in this route's least on-time window (After 9 PM: 72% on time; 9 AM to noon: 81%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Strong track record · 348 flights
Find Delta 2472 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines74%
1,043 flights · 76% on time as flown · 2.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon81%
361 flights · avg delay 9 min
- 3 to 6 PM73%
317 flights · avg delay 17 min
- After 9 PM72%
357 flights · avg delay 17 min
Best day: Saturday (81%). Worst: Sunday (70%).
Smarter routing
Nearby airports that run more on time
ATL → BUF 76% chance on time
Hartsfield Jackson Atlanta International Airport to Buffalo Niagara International Airport · 1,492 flights a year · 55 mi from your airports · yours: 74%
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
- Airline (crew, maintenance, boarding)52%
- Late-arriving aircraft31%
- Air traffic control and airport volume15%
- Severe weather2%
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
ATL to ROC questions
- What time of day is best to fly ATL to ROC?
- 9 AM to noon: 81% of flights arrived on time, against 72% for departures after 9 PM.
- Which airline is most on time from ATL to ROC?
- Delta, with a season-adjusted 74% 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 ATL to ROC?
- July (67% on time); the best was September (86%), 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 ATL
- ROC to ATL (return)
- ATL to LGA 73%
- ATL to MCO 69%
- ATL to FLL 69%
- ATL to DCA 69%
- ATL to DFW 73%
- ATL to ORD 71%
- ATL to EWR 72%
- ATL to MIA 70%
- ATL to TPA 71%
- ATL to PHL 73%
- ATL to DEN 76%
- ATL to BWI 74%
Live status: FAA delays and ground stops