Whether you need to go through security again at Amsterdam Airport Schiphol (AMS) in 2026 depends on your country of origin. If you are arriving from a "Schengen" country (e.g., France, Germany, Italy) and connecting to another Schengen or even a non-Schengen flight, you typically do not have to clear security again, as you are already within the "secure" zone. However, if you are arriving from a non-Schengen country (such as the US, UK, or China), you must go through a security screening and passport control before reaching your connecting gate. Schiphol uses a "one-terminal" concept, but it is divided into "Schengen" and "Non-Schengen" piers. Because of the potential for long queues at passport control and security, it is highly recommended to have a layover of at least 70 to 90 minutes for international connections. If you have a very tight connection, look for the "Short Connection" lanes or use the KLM app, which can provide a "Short Connection Pass" to help you bypass the standard lines.