He was a member of the 2001 Stanley Cup champion Avalanche team, becoming the first Swiss native to achieve the feat.

As a youth, Aebischer played in the 1992 Quebec International Pee-Wee Hockey Tournament with a team from Switzerland.

He spent the next two seasons with Colorado's American Hockey League (AHL) affiliate, the Hershey Bears, with whom he compiled a 46-33-7 record.

[4] The year would prove a successful one, as Roy backstopped the Avalanche to their second Stanley Cup championship, defeating the New Jersey Devils in a seven-game final series.

The following season, due to the NHL lockout, Aebischer returned to Switzerland and played for HC Lugano in the Nationalliga A.

On November 23, 2007, Aebischer was loaned to HC Lugano to make room on the San Antonio roster for goaltender Alex Auld.

[13] On July 1, 2012, Aebischer again left North America and signed a one-year contract with the Rapperswil-Jona Lakers of the National League A.