Kuala Lumpur (KUL) to Singapore Changi (SIN) is the Busiest Global International Route in the World, OAG Data Reveals 1 min read People and Community Kuala Lumpur (KUL) to Singapore Changi (SIN) is the Busiest Global International Route in the World, OAG Data Reveals AETOSWire December 20, 2023 LONDON — OAG, the leading data platform for the global travel industry, today revealed its 2023 Busiest Routes in...Read More