San Jose (SJC) to Los Angeles (LAX): On-Time Performance
Data through July 2026
The calendar drives reliability on SJC–LAX. January 2026 flights landed on schedule 93% of the time, but June 2026 dropped to 77% — a gap of 15 points. Across the full period the route averages 87% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 81%), which matters most in the rough months.
- On-time
- 87%
- arrived <15 min late
- Avg delay
- 8 min
- completed flights
- Cancelled
- 0.5%
- Flights/day
- 12
- last 12 months
- Duration
- 1h 25m
- scheduled
- Distance
- 308 mi
Best airline from SJC to LAX
5 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 92% | 5 min | 2.7% | 555 |
| SkyWest Airlines | 91% | 7 min | 0.2% | 5,445 |
| Spirit Airlines | 89% | 8 min | 1.4% | 484 |
| Southwest Airlines | 81% | 10 min | 0.3% | 3,787 |
| Frontier Airlines | 77% | 15 min | 2.7% | 301 |
Monthly on-time trend
Best time to fly from SJC to LAX
Aim for departures around 6 a.m. (94% on-time); avoid 7 p.m. departures (74%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 85% | 8 min |
| Tuesdaybest | 92% | 5 min |
| Wednesday | 90% | 7 min |
| Thursday | 87% | 8 min |
| Friday | 82% | 11 min |
| Saturday | 90% | 7 min |
| Sunday | 83% | 10 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft43%
- Airline operations38%
- National airspace system12%
- Weather7%
Frequently asked questions
- How often are flights from SJC to LAX delayed?
- 13% of SJC–LAX 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 8 minutes.
- Which airline is most reliable from SJC to LAX?
- Delta Air Lines has the best on-time record on this route at 92%, based on 555 flights. 5 airlines flew SJC–LAX frequently enough to compare in this period.
- What is the best time of day to fly from SJC to LAX?
- Departures around 6 a.m. have the best record (94% on-time), while departures around 7 p.m. have the worst (74%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SJC to LAX?
- The scheduled SJC–LAX flight time averages 1h 25m over 308 miles. Actual arrival times vary — flights on this route land 15+ minutes late 13% of the time.
- How often are SJC to LAX flights cancelled?
- 0.5% 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 SJC to LAX?
- June 2026 was the roughest month in this dataset, with only 77% of arrivals on time. The best was January 2026 at 93%. If your dates are flexible, that 15-point gap is worth planning around.
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Based on 10,580 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.