January 28 – Finnair announced it would be suspending its five weekly routes to Nanjing and Beijing Daxing until the end of March.[2]
January 29 – COVID-19 pandemic in Finland: 1st confirmed case. A 32-year-old Chinese woman from Wuhan sought medical attention in Ivalo and tested positive for SARS-CoV-2. She had travelled from Wuhan. She was quarantined at Lapland Central Hospital in Rovaniemi.[3][4][5][6]
January 30 – Finland's health officials estimated that up to 24 people may have been exposed to the virus.[7]
February
February 5 – 3 of the 24 people suspected of being exposed have left Finland by this date, and 14 of the remaining 21 have been quarantined.[8]
February 26 – Finland's health officials confirmed the second case, a Finnish woman, who made a trip to Milan and was back in Finland on 22 February, tested positive at the Helsinki University Central Hospital.[9]
February 28 – a Finnish woman who had traveled to Northern Italy, tested positive by the Helsinki and Uusimaa Hospital District and was advised to remain in home isolation.[10][11]
March
March 6 – Blind Channel released their 3rd studio album "Violent Pop".
March 13 – the remaining part of the 2019–20 Liiga season was cancelled due to the coronavirus pandemic.[12]
April
May
June
July
August
August 1 - Prime Minister Sanna Marin married her long-time partner Markus Räikkönen at Kesäranta.[13]
September
October
October 21 – The Vastaamo data breach case began with a then-unknown person or group (later revealed to be ex-Lizard Squad member Aleksanteri Kivimäki, also known as Julius Kivimäki[14]) releasing online some of the data on patients and their histories that they had acquired from the Vastaamo psychotherapy centre. Among the affected were politician Kirsi Piha.[15][16]
November
December
4 December – Three underage boys murdered a 16-year-old boy in an act of protracted violence in Helsinki.[17]