Which airline is most reliable for ATL (Atlanta) to SDF (Louisville)?

The most reliable airline on the ATL to SDF route is Southwest Airlines, with an on-time arrival rate of 87%.

How often are flights delayed from ATL to SDF?

About 17% of flights from ATL to SDF experience delays. 83% arrive on time.

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

When flights from ATL to SDF are delayed, the average delay is approximately 60 minutes.

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

With 83% of ATL to SDF flights arriving on time and an average delay of 60 minutes when late, a connection under 60 minutes at SDF is risky. We recommend at least 75-90 minutes for domestic connections after this route.

ATL → SDF

ATL (Atlanta) to SDF (Louisville)

ATL (Atlanta) to SDF (Louisville) flights arrive on time 83% of the time. The most reliable airline on this route is Southwest Airlines at 87%. The average delay is 60 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated August 2026.

ATL → SDF on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

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This route is on time most of the time. About 83% of flights arrive on schedule.

Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Accurate?

Southwest Airlines is significantly more reliable on this route at 87% on time vs SkyWest Airlines at 56%.

Airline Comparison

Southwest Airlines leads at 87% on time; SkyWest Airlines trails at 56%.

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 SDF

81% on time

When flights into SDF are late, the average delay is 76 minutes. Build buffer if you have ground plans.

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

More about SDF →Connection times at SDF →

Flight cancelled or delayed?

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ATL Airport SDF Airport

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