He joined Team Finland again in December 2018 for the 2019 World Junior Ice Hockey Championships (2019 WJC) in Vancouver and Victoria, British Columbia. His first international tournament at the under-20 (junior) level saw Honka on a team of highly skilled players including NHL prospects Henri Jokiharju and Eeli Tolvanen and fellow 2019 NHL Entry Draft selections Kaapo Kakko, Ville Heinola, Kim Nousiainen, and Valtteri Puustinen. Honka saw limited ice time throughout the tournament and collected no points in six games played. Finland's efforts once again beat out the United States in the final round and resulted in gold.