Which Canadian city is known for the Flames NHL team?

Calgary is known for the Flames NHL team because it is the city where the team is based. The Calgary Flames were established in 1972 and have become a significant part of the city's identity and sports culture. The team plays its home games at the Scotiabank Saddledome, which is a central venue for hockey in Calgary. The Flames are part of the Pacific Division in the Western Conference of the NHL and have a dedicated fan base, contributing to the city's reputation as a hockey town.

While Toronto is home to the Maple Leafs, Montreal has the Canadiens, and Ottawa has the Senators, Calgary stands out specifically as the host city of the Flames, making it the correct answer to this question.