Historical on-time performance
San Jose to Long Beach
324 miData through May 2026Source: US DOT · BTS
Flights on SJC–LGB arrive on time 86% of the time over the last 12 months.
On-time rate86%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights
based on 1,222 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time86%Medianon timep9025 minCancel0.2%Flights1,222
Why flights run late
Delay causes
- Airline23%
- Weather0%
- Air traffic (NAS)9%
- Late aircraft67%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 2 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 SJC → LGB
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 — 94% on time.
- Mornings94% on time · p90 on time · 1,189 flights
- Middays90% on time · p90 15 min · 1,087 flights
- Afternoons81% on time · p90 30 min · 607 flights
- Evenings79% on time · p90 30 min · 1,015 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 84% to 91% on time.
- Wednesdays91% on time · p90 10 min · 542 flights
- Saturdays90% on time · p90 10 min · 484 flights
- Tuesdays90% on time · p90 10 min · 542 flights
- Thursdays86% on time · p90 20 min · 597 flights
- Mondays85% on time · p90 20 min · 595 flights
- Sundays84% on time · p90 20 min · 540 flights
- Fridays84% on time · p90 25 min · 599 flights
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