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

The most reliable airline on the ATL to SDF route is Delta Air Lines, with an on-time arrival rate of 85%.

How often are flights delayed from ATL to SDF?

About 16% of flights from ATL to SDF experience delays. 84% 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 57 minutes.

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

With 84% of ATL to SDF flights arriving on time and an average delay of 57 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 84% of the time. The most reliable airline on this route is Delta Air Lines at 85%. The average delay is 57 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated October 2026.

ATL → SDF on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

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This route is on time most of the time. About 84% of flights arrive on schedule.

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

Accurate?

Delta Air Lines is significantly more reliable on this route at 85% on time vs SkyWest Airlines at 56%.

Airline Comparison

Delta Air Lines leads at 85% on time; SkyWest Airlines trails at 56%.

Accurate?

Good to know

Departing from ATL

81% on time

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

TSA is currently ~27 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 75 minutes. Build buffer if you have ground plans.

If connecting at SDF: TSA is ~24 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 October 2026. Source: Bureau of Transportation Statistics.