Transport between the three islands relies on local ferries and these are unsophisticated ‘landing-craft’ style boats that do little more than ferry passengers and vehicles in Spartan comfort, but they are very functional and vital to the inter-island communication. There is plenty of on the ground support excursions and infrastructure and the islands are well-used to tourism; the only exception is that travellers will need to use a bit of independence in getting between the islands.
At the same time, Juan Trippe began a crusade to create an air network that would link America to the world, and he achieved this goal through his airline, Pan American World Airways, with a fleet of flying boats that linked Los Angeles to Shanghai and Boston to London. Pan Am and Northwest Airways (which began flights to Canada in the 1920s) were the only U.S. airlines to go international before the 1940s.
Airlines have substantial fixed and operating costs to establish and maintain air services: labor, fuel, airplanes, engines, spares and parts, IT services and networks, airport equipment, airport handling services, booking commissions, advertising, catering, training, aviation insurance and other costs. Thus all but a small percentage of the income from ticket sales is paid out to a wide variety of external providers or internal cost centers.