Gulfport/Biloxi to Atlanta

What the Data Says About GPT to ATL

The Gulfport/Biloxi to Atlanta corridor (GPT → ATL) covers roughly 352 miles and is served by 7 carriers, based on Bureau of Transportation Statistics reporting. Across 7,624 flights in the dataset, this route posts a 89.3% on-time rate with an average delay of 99.0 minutes when flights run late. Over the most recent 24 months of BTS data, 2,531 flights were recorded on this pairing — 38 cancelled (1.5%) and 3 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 7 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 7,624 total flights analyzed, the 89.3% on-time figure is statistically meaningful rather than a small-sample fluke. The 99.0-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, Oct 2024 posted the best performance on this corridor at 97% on-time, while Jun 2025 came in at 74% on-time — a 24-point gap between best and worst recent month. For travelers evaluating the GPT to ATL route, the combination of a 89.3% on-time rate, 99.0-minute average delay, 1.5% recent cancellation rate, and 7 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.