Atlanta to Gulfport/Biloxi

What the Data Says About ATL to GPT

The Atlanta to Gulfport/Biloxi corridor (ATL → GPT) covers roughly 352 miles and is served by 7 carriers, based on Bureau of Transportation Statistics reporting. Across 7,626 flights in the dataset, this route posts a 88.1% on-time rate with an average delay of 69.8 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 12 diverted (0.5%). 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 7,626 total flights analyzed, the 88.1% on-time figure is statistically meaningful rather than a small-sample fluke. The 69.8-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, Nov 2024 posted the best performance on this corridor at 98% on-time, while Jun 2025 came in at 66% on-time — a 32-point gap between best and worst recent month. For travelers evaluating the ATL to GPT route, the combination of a 88.1% on-time rate, 69.8-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.