Labuan Bajo Seaport's maritime logistics ecosystem serves the marine logistics supply chain as an essential part of economics and social development in the region. It is one of the economic regions that need to be developed where green operations management must be applied to suppress the negative impact of port operations. The research aims to analyze the influence of green marketing, business, and operation management on Sustainability. A cross-sectional study has been conducted in this research with data processing using partial least squares (PLS) path modeling. The population is the stakeholder of Labuan Bajo seaport, and the samples are 100 with a purposive sampling method. Findings show that green marketing has influenced business, operation management, and Sustainability. However, the green industry also influenced green operation management and impacted Sustainability. The study indicates that Sustainability can be achieved when the seaport operates using green principles from planning to monitoring by the involvement of the stakeholder.