Interisland Airlines

Interisland Airlines, operating under IATA code I4 and ICAO code ISN, was established in 1986 and is registered in the Philippines. The airline is headquartered at Ninoy Aquino International Airport (NAIA) in Manila, the country's primary aviation hub, which serves as its main operations base.

The airline focuses on regional connectivity within the Philippine archipelago, serving routes that connect various islands and communities. This regional network model is typical for carriers operating in island-based markets, where air transport is essential for linking distant population centers.

For current information about Interisland Airlines' active aircraft and route network, travelers are encouraged to visit the airline's official website at www.interislandairlines.com or contact the airline directly, as fleet composition and service routes may change.