How often are DEN to IAH flights on time?

Flights from Denver (DEN) to Houston (IAH) arrive on time 85% of the time across 30,276 flights of official data.

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

United Airlines has the best on-time record on this route at 86% across 22,291 flights.

Route reliability

Flights from Denver to Houston arrive on time 85% of the time across 30,276 flights. Here’s how each airline really performs.

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On-time rate

30,276 flights

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

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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 DEN–IAH flights on reliability, weather, and connection safety — not just price.

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