2010-11: Jake Virtanen scored a goal and an assist in his only game with the Yale Secondary Lions high school team in British Columbia and played for the Abbotsford Hawks bantam team. He was the first overall selection in the 2011 WHL Bantam Draft by the Calgary Hitmen.
2011-12: Virtanen made his WHL debut — skating in nine regular season games and four playoff contests with Calgary — and was the third leading scorer for the Fraser Valley Bruins in the B.C. midget major hockey league. He scored 3 goals with 1 assist and was +3 with 4 penalty minutes in the regular season with the Hitmen. Calgary lost to Brandon in a first round series after finishing second to WHL champion Edmonton in the Central Division. Virtanen had no points and was -4 with 4 penalty minutes in the five game series against the Wheat Kings. In 39 games with Fraser Valley he scored 17 goals with 22 assists and a team-high 120 penalty minutes. Virtanen was the leading scorer for third-place Team British Columbia with five goals in four games at the 2011 Western Canada U16 Challenge Cup.
2012-13: Virtanen skated in 62 games for Calgary as a 16-year-old in his first full WHL season and represented Canada Pacific in the 2013 U17 World Hockey Challenge. He scored 16 goals with 18 assists and was +25 with 67 penalty minutes for the Hitmen. Calgary finished second in the Midwest Division and lost to first-place Edmonton in the East Conference Finals. Virtanen scored 2 goals with 4 assists and was -2 with 27 penalty minutes in 15 playoff games. He scored 5 goals with 2 assists and had 8 penalty minutes in five games for Canada Pacific.
2013-14: Virtanen won a gold medal playing for Canada's U18 team at the 2013 Ivan Hlinka Memorial Tournament in August before returning to Calgary for his second WHL season. He had 1 assist and was -2 with 4 penalty minutes in five games at the Ivan Hlinka tournament.