Which of the following is an interisland airline operating in Hawaii?

Go! Mokulele is an interisland airline operating specifically within Hawaii, providing essential connections between the various islands of the Hawaiian archipelago. This airline plays a crucial role in facilitating travel for both residents and tourists, making it easier to hop from one island to another, which is a popular activity in Hawaii given the unique attractions and experiences offered by each island.

The other airlines listed operate primarily on a mainland or international level rather than focusing on interisland travel. Delta Air Lines, Southwest Airlines, and JetBlue Airways are major carriers that primarily serve long-distance routes and are not primarily recognized for interisland services in Hawaii. Hence, Go! Mokulele stands out as the correct choice for an airline specifically dedicated to interisland flights in Hawaii.