Which airline is most reliable for DEN (Denver) to ATL (Atlanta)?

The most reliable airline on the DEN to ATL route is Delta Air Lines, with an on-time arrival rate of 84%.

How often are flights delayed from DEN to ATL?

About 21% of flights from DEN to ATL experience delays. 79% arrive on time.

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

When flights from DEN to ATL are delayed, the average delay is approximately 65 minutes.

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

With 79% of DEN to ATL flights arriving on time and an average delay of 65 minutes when late, a connection under 60 minutes at ATL is risky. We recommend at least 75-90 minutes for domestic connections after this route.

DEN → ATL

DEN (Denver) to ATL (Atlanta)

DEN (Denver) to ATL (Atlanta) flights arrive on time 79% of the time. The most reliable airline on this route is Delta Air Lines at 84%. The average delay is 65 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated July 2026.

DEN → ATL on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

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This route is on time most of the time. About 79% 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 — 84% vs 72% on time.

Airline Comparison

Delta Air Lines leads at 84% on time; Southwest Airlines trails at 72%.

Accurate?

Good to know

Departing from DEN

79% on time

Expect ~19 min sitting on the taxiway after your gate pushes back. DEN has long runway queues.

TSA is currently ~9 min. Best time: 4 AM (about 5 min).

More about DEN →

Arriving at ATL

80% on time

When flights into ATL are late, the average delay is 72 minutes. Build buffer if you have ground plans.

If connecting at ATL: TSA is ~31 min right now. Allow at least 60 minutes for a domestic connection.

More about ATL →Connection times at ATL →

Flight cancelled or delayed?

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

DEN Airport ATL Airport

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