Rainbow Air Polynesia was a small regional carrier operating under IATA code RX and ICAO code RPO, providing air transportation services in the Pacific island region. The airline operated under the callsign 'Rainbow Air' and was registered in the United States. The carrier focused on inter-island and regional routes serving communities across Polynesia, filling a niche role in connecting remote island populations. Like many small Pacific regional airlines, it faced the operational challenges typical of serving widely dispersed, low-traffic island destinations. Detailed historical records about the airline's full operational history, fleet, and current status are limited, and it does not appear to be currently active as a major carrier in publicly available aviation databases.