Inspired by an orchid petal, T4 will be built on the site of the former Budget Terminal (BT). The terminal’s showpiece is a 300-metre-long Central Galleria, which separates the public zone from the restricted area. A first for Changi Airport, T4’s visual-transparent concept will provide a clear view of the attractive offerings in the Transit Lounge from the Check-in Hall. Taking public feedback into consideration, the T4 transit area will also feature local culture and heritage-themed features such as retail stores with facades of old Peranakan shop houses. In another Changi Airport first, T4 will sport a new walk-through retail concept with more than 15,000 square metres of space dedicated to shopping and dining.

There will be up to 1,500 parking spaces for private vehicles in another MSCP added in front of T4 as well as in a multi-storey car park. A bridge across Airport Boulevard will be constructed to enable buses and other airside vehicles to move from T4 to these aircraft stands. To facilitate the smooth movement of passengers boarding aircraft at the remote stands, T4 will also house a centralised departure bus lounge with up to nine bus bays.