The paper examines the environmental impacts of new airport construction at Navi Mumbai. There are different types of environmental impact assessment that can be environmental, that can be social or that can be economical in nature. The main environmental impacts of airports growth are noise and air quality. There are different types of devices like sound level meter were used to record both noise and air quality. This paper covers the main two environmental impacts of an airport i.e. 1) noise & 2) air quality. The findings suggested that the construction and land use for the new proposed airport has a significant relation with the noise & particulate matter (PM) levels too. The PM level at the surrounding living area should not be above than the recommended levels. The findings of the study are hoped to assist in providing better benefits of the proposed Navi Mumbai airport within affordable cost. The construction of Navi Mumbai airport system helped to increase the accessibility & mobility of users. This paper also reports the study of passenger behavior while moving in the interchange facility. So the paper finally describes all different types of environmental impact that can be harmful to people by the new construction of any airport.