Historical on-time performance
San Jose to Long Beach
324 miData through Dec 2025Source: US DOT · BTS
Flights on SJC–LGB arrive on time 87% of the time over the last 12 months.
On-time rate87%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights
based on 1,234 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time87%Medianon timep9025 minCancel0.2%Flights1,234
Why flights run late
Delay causes
- Airline24%
- Weather0%
- Air traffic (NAS)17%
- Late aircraft59%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SJC → LGB
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 94% on time.
- Mornings94% on time · p90 on time · 1,181 flights
- Middays89% on time · p90 15 min · 1,079 flights
- Afternoons80% on time · p90 35 min · 635 flights
- Evenings80% on time · p90 30 min · 1,036 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 83% to 91% on time.
- Wednesdays91% on time · p90 10 min · 555 flights
- Saturdays90% on time · p90 10 min · 486 flights
- Tuesdays89% on time · p90 15 min · 555 flights
- Thursdays86% on time · p90 20 min · 602 flights
- Sundays85% on time · p90 20 min · 522 flights
- Mondays84% on time · p90 25 min · 608 flights
- Fridays83% on time · p90 30 min · 604 flights
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