LGW and UVF are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. LGW to UVF refers to a flight route from London Gatwick Airport to Castries Hewanorra Airport. Castries George F. L. Charle Airport (SLU) are other airports near this flight route and their unique identifiers/IATA codes.