Atlanta (ATL) to San Jose (SJC): On-Time Performance
Data through May 2026
The calendar drives reliability on ATL–SJC. September 2025 flights landed on schedule 95% of the time, but July 2024 dropped to 73% — a gap of 22 points. Across the full period the route averages 86% on-time against a national 78%.
- On-time
- 86%
- arrived <15 min late
- Avg delay
- 8 min
- completed flights
- Cancelled
- 1.2%
- Flights/day
- 2.5
- last 12 months
- Duration
- 5h 4m
- scheduled
- Distance
- 2,116 mi
Monthly on-time trend
Best time to fly from ATL to SJC
Aim for departures around 9 a.m. (92% on-time); avoid 5 p.m. departures (82%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 86% | 8 min |
| Tuesday | 85% | 10 min |
| Wednesdaybest | 91% | 5 min |
| Thursday | 85% | 7 min |
| Friday | 88% | 8 min |
| Saturday | 88% | 7 min |
| Sunday | 82% | 12 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft15%
- Airline operations53%
- National airspace system22%
- Weather10%
- Security1%
Frequently asked questions
- How often are flights from ATL to SJC delayed?
- 14% of ATL–SJC 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 8 minutes.
- What is the best time of day to fly from ATL to SJC?
- Departures around 9 a.m. have the best record (92% on-time), while departures around 5 p.m. have the worst (82%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ATL to SJC?
- The scheduled ATL–SJC flight time averages 5h 4m over 2,116 miles. Actual arrival times vary — flights on this route land 15+ minutes late 14% of the time.
- How often are ATL to SJC flights cancelled?
- 1.2% 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 ATL to SJC?
- July 2024 was the roughest month in this dataset, with only 73% of arrivals on time. The best was September 2025 at 95%. If your dates are flexible, that 22-point gap is worth planning around.
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Based on 1,730 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.