Which airline is most reliable for ATL (Atlanta) to IAH (Houston)?

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

How often are flights delayed from ATL to IAH?

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

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

When flights from ATL to IAH are delayed, the average delay is approximately 69 minutes.

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

With 76% of ATL to IAH flights arriving on time and an average delay of 69 minutes when late, a connection under 60 minutes at IAH is risky. We recommend at least 75-90 minutes for domestic connections after this route.

ATL → IAH

ATL (Atlanta) to IAH (Houston)

ATL (Atlanta) to IAH (Houston) flights arrive on time 76% of the time. The most reliable airline on this route is SkyWest Airlines at 87%. The average delay is 69 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated July 2026.

ATL → IAH on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

Better

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 87% on time vs Spirit Airlines at 67%.

Airline Comparison

SkyWest Airlines leads at 87% on time; Spirit Airlines trails at 67%.

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 ~30 min. Best time: 4 AM (about 5 min).

More about ATL →

Arriving at IAH

79% on time

When flights into IAH are late, the average delay is 77 minutes. Build buffer if you have ground plans.

If connecting at IAH: TSA is ~10 min right now. Allow at least 60 minutes for a domestic connection.

More about IAH →Connection times at IAH →

Flight cancelled or delayed?

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

ATL Airport IAH Airport

Check the return: IAH → ATL

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