Promo code! Book Toronto’s city airport - Montreal and get 15% off Tango and Tango Plus fares for travel within Canada: Book your flight between Toronto city’s airport and Montreal by May 31 for travel until August 30. 2012. Within one week, we’ll send a personal promo code to the email address on your reservation file, for a 15% saving on Canada Tango and Tango Plus fares. This discount applies for travel valid on Air Canada operated flights from May 24 to October 31, 2012.Book now! Just thought I would mention that award travel also counts. I used a Aeroplat partner ticket to get two tickets to Toronto City for 15,000 points and was surprised to find the 15% code in my e-mail the following day.