This is defined as East London Airport (ELS) and Los Angeles Airport (LAX). Codes like Los Angeles Airport are often used to just call airports uniquely. San Francisco Airport (SFO), San Diego Airport (SAN), Santa Ana J. Wayne/Orange Cnty Airport (SNA), San Jose Airport (SJC), Sacramento Intl Airport (SMF) are other airports near this flight route and their unique identifiers/IATA codes.