Landmarks & buildings
Helsinki Airport
International airport serving Helsinki, Finland
4 films and series were filmed at Helsinki Airport. Wikipedia names 1 more. Newspapers, film offices and archives name more, listed below.

Movies filmed at Helsinki Airport
Filmed here, per Wikipedia
Wikipedia says these were filmed in Helsinki Airport too. Each title’s page links to the sentence that says so.
The Kremlin LetterThriller film1970
From published sources
Newspapers, film offices, archives and city filming permits say these were filmed at Helsinki Airport. Each source is linked.
Filming locations nearby
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Towns & cities
Vantaanportti
Finland · 3 km south
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Towns & cities
Riipilä
Finland · 3 km north-west
City district in Vantaa, Finland
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Towns & cities
Kiila
Finland · 3 km north-west
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Towns & cities
Pakkala
Finland · 3 km south
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Streets & squares
Kyläraitti (Vantaa)
Finland · 4 km south
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Towns & cities
Viinikkala
Finland · 4 km west