Turkish President Recep Tayyip Erdogan had given the green light for Finland to join NATO in mid-March.
Turkey’s parliamentary committee on Foreign Relations also gave its go-ahead last week.
Turkey made its approval conditional on Finland giving guarantees that it would stop offering protection to the militants of the Kurdistan Workers’ Party (PKK), which Ankara considers “terrorists”.
Finland, like its neighbor Sweden, decided to abandon its traditional neutrality last year and applied to join the military alliance in the aftermath of Russia’s invasion of Ukraine.
Sweden’s situation is more delicate and Ankara is still blocking its accession.
Finnish President Sauli Niinistö thanked in a statement the “support” of the 30 NATO member states for the country’s candidacy.
“Finland will be a strong and capable ally, committed to the security of the alliance,” he added, after knowing the result of the Turkish Parliament.
The country’s prime minister, Sanna Marin, vowed for her part to “stand up for each other” and said on Twitter that Finland supported Sweden’s candidacy.
NATO Secretary General Jens Stoltenberg also welcomed the vote by lawmakers and assured on Twitter that the entry of Finland “it will make the whole NATO family stronger and more secure.”