SJC (San Jose) to SAN (San Diego) flights arrive on time 78% of the time. The most reliable airline on this route is Alaska Airlines at 87%. The average delay is 50 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated May 2026.SJC → SAN
SJC (San Jose) to SAN (San Diego)
SJC → SAN on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is on time most of the time. About 78% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Alaska Airlines is significantly more reliable on this route at 87% on time vs Frontier Airlines at 72%.
Airline Comparison
Alaska Airlines leads at 87% on time; Frontier Airlines trails at 72%.
Accurate?
Good to know
Departing from SJC
84% on timeTSA is currently ~16 min. Best time: 4 AM (about 5 min).
Arriving at SAN
80% on timeWhen flights into SAN are late, the average delay is 60 minutes. Build buffer if you have ground plans.
If connecting at SAN: TSA is ~12 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated May 2026. Source: Bureau of Transportation Statistics.