He has previously played with the Minnesota Wild, Buffalo Sabres, Arizona Coyotes and Washington Capitals of the National Hockey League (NHL).

[8] With the intention of pursuing his NHL career, Larsson relocated to North America, and was directly assigned to the Wild's American Hockey League (AHL) affiliate, the Houston Aeros, to begin the 2012–13 season due to the lockout.

Larsson was recalled to the Wild during the shortened season as an injury replacement and made his NHL debut against the Detroit Red Wings on February 17, 2013.

On 12 August 2022, Larsson as a free agent halted his NHL career in opting to return to his original Swedish club, Brynäs IF of the SHL, after signing a three-year, $930,000 contract.

[17] On 30 March 2011, Larsson made his senior national team debut in an exhibition game against Latvia which ended 4–1 in Sweden's favour.