Huntsville to Houston

What the Data Says About HSV to IAH

The Huntsville to Houston corridor (HSV → IAH) covers roughly 595 miles and is served by 8 carriers, based on Bureau of Transportation Statistics reporting. Across 603 flights in the dataset, this route posts a 87.4% on-time rate with an average delay of 79.8 minutes when flights run late. Over the most recent 24 months of BTS data, 603 flights were recorded on this pairing — 28 cancelled (4.6%) and 1 diverted (0.2%). Those baseline metrics tell you what to expect before you book.

Having 8 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 603 total flights analyzed, the 87.4% on-time figure is statistically meaningful rather than a small-sample fluke. The 79.8-minute average delay applies only to flights that actually ran late, so it is not the average wait across all departures — the majority of flights on this route depart on time under the BTS definition of a delay (15+ minutes past schedule).

Looking at recent months, May 2020 posted the best performance on this corridor at 95% on-time, while Feb 2020 came in at 78% on-time — a 17-point gap between best and worst recent month. For travelers evaluating the HSV to IAH route, the combination of a 87.4% on-time rate, 79.8-minute average delay, 4.6% recent cancellation rate, and 8 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.