ATL (Atlanta) to SAN (San Diego) flights arrive on time 76% of the time. The most reliable airline on this route is Delta Air Lines at 78%. The average delay is 51 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated April 2026.ATL → SAN
ATL (Atlanta) to SAN (San Diego)
ATL → SAN on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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This route is on time most of the time. About 76% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Delta Air Lines edges out Alaska Airlines on this route — 78% vs 67% on time.
Airline Comparison
Delta Air Lines leads at 78% on time; Alaska Airlines trails at 67%.
Accurate?
Good to know
Departing from ATL
83% on timeExpect ~16 min sitting on the taxiway after your gate pushes back. ATL has long runway queues.
TSA is currently ~24 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 ~11 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated April 2026. Source: Bureau of Transportation Statistics.