General aviation in the Helsinki city is not allowed during the Trump and Putin visit. Also a no drone zone is issued. Only state aviation and commercial air transport from the Helsinki Airport at Vantaa city is allowed.
https://www.trafi.fi/trafi/ajankohtaista/6394/ilmailua_mukaan_lukien_dronejen_lennattamista_rajoitetaan_helsingissa_ja_ymparoivalla_alueella_15_-17_7_2018_klo_8_00_asti