Layover calculator — Singapore Changi Airport (SIN)

Enter your connection details below. The estimate uses known terminal connections, security re-check rules, and facility locations — each backed by sources and a last-verified date. Where data is missing the result says so instead of guessing.

The interactive calculator needs JavaScript. Terminal connection times and facility data are still visible on the main SIN page.

Known terminal connections at SIN

From	To	Mode	Airside possible	Est. minutes	Security re-check	Source
T1	T2	train	Yes	5–10	No	official source
T1	T3	train	Yes	5–10	No	official source
T2	T3	train	Yes	5–10	No	official source
T1	T2	walk	No	5–10	No	official source
T2	T3	walk	No	5–10	No	official source
T1	T3	walk	Yes	5–10	No	official source
T2	T4	bus	Yes	12–12	No	official source
T3	T4	bus	Yes	12–12	No	official source
T1	T4	bus	Yes	19–19	No	official source
T2	T4	bus	No	10–10	No	official source

Security re-check is stated per terminal pair from the same verified records as the SIN transfer table. Buffers: +30 min re-clearing security, +60 min immigration and customs (site-default heuristics ).