Which airline is most reliable for ATL (Atlanta) to ORD (Chicago)?

The most reliable airline on the ATL to ORD route is SkyWest Airlines, with an on-time arrival rate of 88%.

How often are flights delayed from ATL to ORD?

About 24% of flights from ATL to ORD experience delays. 76% arrive on time.

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

When flights from ATL to ORD are delayed, the average delay is approximately 76 minutes.

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

With 76% of ATL to ORD flights arriving on time and an average delay of 76 minutes when late, a connection under 60 minutes at ORD is risky. We recommend at least 75-90 minutes for domestic connections after this route.

ATL → ORD

ATL (Atlanta) to ORD (Chicago)

ATL (Atlanta) to ORD (Chicago) flights arrive on time 76% of the time. The most reliable airline on this route is SkyWest Airlines at 88%. The average delay is 76 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated April 2026.

ATL → ORD on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

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This route is on time most of the time. About 76% of flights arrive on schedule.

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

Accurate?

SkyWest Airlines is significantly more reliable on this route at 88% on time vs Frontier Airlines at 60%.

Airline Comparison

SkyWest Airlines leads at 88% on time; Frontier Airlines trails at 60%.

Accurate?

Good to know

Departing from ATL

83% on time

Expect ~16 min sitting on the taxiway after your gate pushes back. ATL has long runway queues.

TSA is currently ~23 min. Best time: 4 AM (about 5 min).

More about ATL →

Arriving at ORD

80% on time

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

If connecting at ORD: TSA is ~21 min right now. Allow at least 60 minutes for a domestic connection.

More about ORD →Connection times at ORD →

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