Tango flights startup dates
 

There's a list of startup dates for different TANGO routes from different cities updated on TANGO's website:

http://www.flytango.com/en/nov01.html

From Toronto:

Toronto Vancouver November 1, 2001
Toronto Calgary November 1, 2001
Toronto Montreal November 2, 2001
Toronto Winnipeg November 2, 2001
Toronto Edmonton November 3, 2001
Toronto Halifax November 3, 2001
Toronto Ottawa November 5, 2001