Terminal 4 (T4) at Changi Airport is physically separated from Terminals 1, 2, and 3, meaning it is not connected by the Skytrain. In 2026, the most common way to get there is by using the free 24-hour shuttle bus. If you are on the "landside" (before immigration), you can catch the shuttle from the Arrivals Hall of Terminal 2. If you are in the "transit" area (after immigration) with a connecting flight, there is an "Airside Shuttle" that runs between T4 and T1/T3. The bus ride takes about 10–15 minutes. Alternatively, if you are coming from the city via the MRT, you must get off at the "Changi Airport" station (located between T2 and T3) and then follow the signs to the T2 bus bay for the T4 shuttle. For those using ride-share or taxis, they can drop you directly at the T4 departures curb. T4 is Changi's most automated terminal, so allow an extra few minutes to navigate the shuttle if you are tight on time for your flight.