Originally Posted by UKtravelbear

But at HEL the not having to reclear security only applies to a limited number of counties of which the UK and US are two

Helsinki Airport follows European Union's (EU) security regulations. Therefore, passengers arriving from non-Schengen countries (excluding EU countries not part of the Schengen area, as well as the United Kingdom, the United States, Canada, and Singapore) proceed to their connecting flights through security control

https://www.finavia.fi/en/airports/h...port/terminals


If you arrived from e.g. China or Japan you'd have had to reclear security in HEL