Houston to Brownsville

What the Data Says About IAH to BRO

The Houston to Brownsville corridor (IAH → BRO) covers roughly 308 miles and is served by 9 carriers, based on Bureau of Transportation Statistics reporting. Across 1,384 flights in the dataset, this route posts a 88.2% on-time rate with an average delay of 97.4 minutes when flights run late. Over the most recent 24 months of BTS data, 1,384 flights were recorded on this pairing — 58 cancelled (4.2%) and 1 diverted (0.1%). 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 1,384 total flights analyzed, the 88.2% on-time figure is statistically meaningful rather than a small-sample fluke. The 97.4-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 99% on-time, while Aug 2021 came in at 69% on-time — a 30-point gap between best and worst recent month. For travelers evaluating the IAH to BRO route, the combination of a 88.2% on-time rate, 97.4-minute average delay, 4.2% recent cancellation rate, and 9 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.