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 22% of flights from DEN to ATL experience delays. 78% 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 63 minutes.

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

With 78% of DEN to ATL flights arriving on time and an average delay of 63 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 78% of the time. The most reliable airline on this route is Delta Air Lines at 84%. The average delay is 63 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated October 2026.

DEN → ATL on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

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This route is on time most of the time. About 78% 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 84% on time vs Frontier Airlines at 68%.

Airline Comparison

Delta Air Lines leads at 84% on time; Frontier Airlines trails at 68%.

Accurate?

Good to know

Departing from DEN

78% on time

Expect ~18 min sitting on the taxiway after your gate pushes back. DEN has long runway queues.

TSA is currently ~22 min. Best time: 4 AM (about 5 min).

More about DEN →

Arriving at ATL

81% on time

When flights into ATL are late, the average delay is 71 minutes. Build buffer if you have ground plans.

If connecting at ATL: TSA is ~32 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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DEN Airport ATL Airport

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