Southwest operates from the mainland terminal in select Hawaii airports. In these instances, mainland agriculture regulations for carryon bags will apply. Restricted agriculture items need to be placed in checked luggage.
Per the U.S. Department of Agriculture (USDA) regulations, certain fruits, vegetables, plants, and flowers are prohibited as carryon items when traveling between Hawaiian Islands. Examples of these carryon restrictions include but are not limited to fresh fruits and vegetables, berries of any kind, fresh flowers, plants or plants in soil, seeds, live insects, cotton or cotton bolls, and sugarcane.
