Helsinki機場官網的公告:Travel from a non-Schengen country to another non-Schengen country is allowed via Helsinki Airport. However, you should be travelling to your country of residence and remain in the non-Schengen transit area of Helsinki Airport. Please take into consideration any possible coronavirus related restrictions of the destination.https://www.finavia.fi/en/newsroom/2020/how-coronavirus-affecting-air-travel-and-finavias-airports