When you arrive, you can declare for your luggage at Customs by choosing the red channel. You can get advice from the Customs service point if necessary.
At the customer service point in the terminal lobby, you can take care of matters concerning customs, such as customs clearance of outbound passengers and tax-free stamping.
The service point in the passenger terminal issues customs clearance ...
Lentoasemantie 1
01530 Vantaa
Passenger terminal
Vantaa
PO Box 512
00101 Helsinki