Delta Airlines flies between: Toronto - New York, Toronto - Paris, Toronto - Rome, Toronto - Amsterdam, Montreal - Paris, Vancouver - Los Angeles, Buffalo - New York, Montreal - New York, Vancouver - Amsterdam, Toronto - Atlanta, New York - London, New York - Toronto, Detroit - Orlando, Calgary - Amsterdam, Paris - Montreal, Los Angeles - Sydney, Detroit - Las Vegas, Montreal - Amsterdam, Buffalo - Atlanta, London - New York, as well as several other routes.
Generally speaking, you are likely to have to pay for your checked baggage on Delta. If you are flying to a destination within Canada, Central America, the USA or any of its territories such as Puerto Rico or the US Virgin Islands, your first check bag will cost you $25 and if you fly with a second checked bag, it will cost you either $35 or $40 depending on destination. If you are flying Delta anywhere else, your first bag will be free. Delta allows one carry-on and one personal item.