Historical on-time performance
Los Angeles to San Jose
308 miData through May 2026Source: US DOT · BTS
Flights on LAX–SJC arrive on time 87% of the time over the last 12 months.
On-time rate87%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights
based on 4,316 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesbestOn-time91%Medianon timep9010 minCancel0.3%Flights2,149
- Delta Air LinesOn-time84%Medianon timep9020 minCancel3.3%Flights361
- Southwest AirlinesOn-time83%Medianon timep9030 minCancel0.6%Flights1,806
Why flights run late
Delay causes
- Airline44%
- Weather5%
- Air traffic (NAS)6%
- Late aircraft44%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline62%
- Weather10%
- Air traffic (NAS)24%
- Security3%
Most cancellations here are attributed to Airline. Shares are among 29 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly LAX → SJC
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 93% on time.
- Mornings93% on time · p90 5 min · 4,021 flights
- Middays88% on time · p90 15 min · 3,307 flights
- Afternoons87% on time · p90 20 min · 2,586 flights
- Evenings81% on time · p90 35 min · 3,052 flights
- Overnights80% on time · p90 35 min · 2,238 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 83% to 91% on time.
- Tuesdays91% on time · p90 10 min · 2,095 flights
- Wednesdays89% on time · p90 15 min · 2,077 flights
- Saturdays89% on time · p90 15 min · 1,791 flights
- Thursdays86% on time · p90 20 min · 2,298 flights
- Mondays85% on time · p90 25 min · 2,310 flights
- Fridays84% on time · p90 25 min · 2,326 flights
- Sundays83% on time · p90 30 min · 2,307 flights
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