How often are IAH to ATL flights on time?

Flights from Houston (IAH) to Atlanta (ATL) arrive on time 85% of the time across 30,642 flights of official data.

Which airline is most reliable on the IAH to ATL route?

Delta Air Lines has the best on-time record on this route at 86% across 14,721 flights.

Route reliability

Flights from Houston to Atlanta arrive on time 85% of the time across 30,642 flights. Here’s how each airline really performs.

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On-time rate

30,642 flights

On-time = arrived within 15 minutes of schedule, per BTS TranStats. Compare the reverse leg ATL → IAH.

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Nonstop vs. Connecting Flights: The Reliability Trade-off

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Do Morning Flights Really Have Fewer Delays?

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Are Some Airlines Really More Reliable Than Others?

The reliability gap between airlines is real — here's what actually drives it.

Score real IAH–ATL flights on reliability, weather, and connection safety — not just price.

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