Soekarno - Hatta International Airport is the main airport serving the greater Jakarta area on the island of Java, Indonesia. With Airport Code: CGK
Balai Sidang Jakarta Convention Center is at the gateway to the commercial and entertainment district of Senayan in Jakarta. Distance from Airport (Soekarno - Hatta) to Balai Sidang Jakarta Convention Center (Senayan Gelora Bung Karno Area) 16 Mile around 45 - 60 minutes by taxi. Take Blue Bird Taxi as regular or Silver Bird as premium taxi which are have good drivers, reliable operator and some understand English language.
By car or taxi from the Airport, take the exit at Senayan, then turn over at the Senayan flyover and enter Jalan Gerbang Pemuda.
More info about airport guideline: https://www.jakartaairportonline.com/