Which airline is most reliable for ATL (Atlanta) to SAN (San Diego)?

The most reliable airline on the ATL to SAN route is Delta Air Lines, with an on-time arrival rate of 77%.

How often are flights delayed from ATL to SAN?

About 23% of flights from ATL to SAN experience delays. 77% arrive on time.

What's the average delay on ATL to SAN flights?

When flights from ATL to SAN are delayed, the average delay is approximately 52 minutes.

Is a short connection safe after a ATL to SAN flight?

With 77% of ATL to SAN flights arriving on time and an average delay of 52 minutes when late, a connection under 60 minutes at SAN is risky. We recommend at least 75-90 minutes for domestic connections after this route.

ATL → SAN

ATL (Atlanta) to SAN (San Diego)

ATL (Atlanta) to SAN (San Diego) flights arrive on time 77% of the time. The most reliable airline on this route is Delta Air Lines at 77%. The average delay is 52 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated July 2026.

ATL → SAN on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

Better

This route is on time most of the time. About 77% 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 Southwest Airlines on this route — 77% vs 72% on time.

Airline Comparison

Delta Air Lines leads at 77% on time; Southwest Airlines trails at 72%.

Accurate?

Good to know

Departing from ATL

80% on time

Expect ~17 min sitting on the taxiway after your gate pushes back. ATL has long runway queues.

TSA is currently ~5 min. Best time: 4 AM (about 5 min).

More about ATL →

Arriving at SAN

77% on time

When flights into SAN are late, the average delay is 61 minutes. Build buffer if you have ground plans.

If connecting at SAN: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.

More about SAN →Connection times at SAN →

Flight cancelled or delayed?

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Flying out of ATL? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

ATL Airport SAN Airport

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Data last updated July 2026. Source: Bureau of Transportation Statistics.