Gulfport/Biloxi to Houston

What the Data Says About GPT to IAH

The Gulfport/Biloxi to Houston corridor (GPT → IAH) covers roughly 376 miles and is served by 2 carriers, based on Bureau of Transportation Statistics reporting. Across 653 flights in the dataset, this route posts a 91.6% on-time rate with an average delay of 73.0 minutes when flights run late. Over the most recent 24 months of BTS data, 653 flights were recorded on this pairing — 37 cancelled (5.7%) and 3 diverted (0.5%). Those baseline metrics tell you what to expect before you book.

Having 2 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 653 total flights analyzed, the 91.6% on-time figure is statistically meaningful rather than a small-sample fluke. The 73.0-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, Sep 2020 posted the best performance on this corridor at 98% on-time, while Feb 2020 came in at 87% on-time — a 11-point gap between best and worst recent month. For travelers evaluating the GPT to IAH route, the combination of a 91.6% on-time rate, 73.0-minute average delay, 5.7% recent cancellation rate, and 2 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.