Houston to Huntsville

What the Data Says About IAH to HSV

The Houston to Huntsville corridor (IAH → HSV) covers roughly 595 miles and is served by 9 carriers, based on Bureau of Transportation Statistics reporting. Across 604 flights in the dataset, this route posts a 87.7% on-time rate with an average delay of 68.9 minutes when flights run late. Over the most recent 24 months of BTS data, 604 flights were recorded on this pairing — 36 cancelled (6.0%) and 1 diverted (0.2%). Those baseline metrics tell you what to expect before you book.

Having 9 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 604 total flights analyzed, the 87.7% on-time figure is statistically meaningful rather than a small-sample fluke. The 68.9-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, Aug 2020 posted the best performance on this corridor at 98% on-time, while Jan 2020 came in at 78% on-time — a 20-point gap between best and worst recent month. For travelers evaluating the IAH to HSV route, the combination of a 87.7% on-time rate, 68.9-minute average delay, 6.0% recent cancellation rate, and 9 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.