Gulfport/Biloxi, MS

What the Data Says About GPT

Gulfport/Biloxi, MS in Gulfport/Biloxi, Mississippi handled 38,923 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 86% on-time departure rate. Of those flights, 5,458 experienced delays, 484 were cancelled, and 37 were diverted. The cancellation rate works out to 1.24%, the diversion rate to 0.10%, and the average delay when departures run late is 83.3 minutes. These figures are the baseline for comparing GPT against other airports in the same state and nationally.

Breaking down what drives delays at GPT, Carrier leads the pack. Carrier accounts for 40.2% of total delay minutes, followed by Late Aircraft at 35.1% and NAS (National Aviation System) at 13.3%. Weather contributes 11.4% of delay minutes at this airport, while security holds the smallest share at 0.1%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.

Seasonally, September runs the cleanest at GPT with a 95.7% on-time rate, while June is the roughest at 91% — a 5-point swing between best and worst month. Volume peaks in March, when average flights hit 589. The busiest route from GPT is to GPT (Gulfport/Biloxi), with 7,626 flights at a 88.1% on-time rate. Combine these numbers — 86% on-time, 83.3-minute average delay, 1.24% cancellation rate — and you have a concrete picture of departure reliability at Gulfport/Biloxi, MS.