Changi International airport's Terminal 4 (T4) will commence operations on 31 October.
Changi Airport Group (CAG) says nine airlines will shift their operations to T4 over a one-week period.
Cathay Pacific and Korean Air will move on 31 October, followed by Cebu Pacific and Spring Airlines on 2 November. AirAsia Group's four airlines and Vietnam Airlines will move on 7 November.
"[The commencement of operations] follows the recent successful conclusion of major trials, with a small number of checks and reviews to be completed in the final phase of the preparations," says CAG.
The airport operator also conducted trials on selected commercial flights with airline partners at the new terminal "to validate, in a live setting, the inter-operability and process integration of the airport’s and airlines’ systems".
T4 will add a capacity of 16 million passengers per annum to Changi airport, bringing the airport’s total annual handling capacity to 82 million passengers.