Atlanta (ATL) to San Jose (SJC): On-Time Performance
Data through July 2026
The calendar drives reliability on ATL–SJC. September 2025 flights landed on schedule 95% of the time, but July 2026 dropped to 69% — a gap of 26 points. Across the full period the route averages 85% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 82%), which matters most in the rough months.
- On-time
- 85%
- arrived <15 min late
- Avg delay
- 9 min
- completed flights
- Cancelled
- 1.3%
- 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 8 a.m. (92% on-time); avoid 4 p.m. departures (79%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 84% | 8 min |
| Tuesday | 86% | 9 min |
| Wednesdaybest | 90% | 5 min |
| Thursday | 85% | 8 min |
| Friday | 85% | 10 min |
| Saturday | 86% | 8 min |
| Sunday | 80% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft20%
- Airline operations49%
- National airspace system21%
- Weather10%
- Security1%
Frequently asked questions
- How often are flights from ATL to SJC delayed?
- 15% of ATL–SJC 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 9 minutes.
- What is the best time of day to fly from ATL to SJC?
- Departures around 8 a.m. have the best record (92% on-time), while departures around 4 p.m. have the worst (79%). 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 15% of the time.
- How often are ATL to SJC flights cancelled?
- 1.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from ATL to SJC?
- July 2026 was the roughest month in this dataset, with only 69% of arrivals on time. The best was September 2025 at 95%. If your dates are flexible, that 26-point gap is worth planning around.
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Related guides
Based on 1,829 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.