Arajuuri has also represented Finland's U-23 national team in the International Challenge Trophy. Arajuuri earned his first cap for Finland in a friendly against South Korea on 18 January 2010 in Málaga, Spain. He came on as a substitute in the 84th minute. He scored his first goal for the national team on 11 October 2015 in a UEFA Euro 2016 qualification match against Northern Ireland.  1 Including Polish SuperCup. Lech Poznań  Brøndby IF