@ Navaneeth,
Which airways you booked.. whether any connecting flight from different airlines?
How much your luggage baggage.. ?
The reason i am asking that is, if you get Jet Airways-Air Canada like, you can carry only 2 pieces (1 piece = 23 kg) only because air canada allows only 2ps.. though in Jet Airways you can get 3ps.
If we go through USA, we have to have US transit visa. It's not possible to take transit within short span. So, London-Montreal-Toronto would be fine.. or any other connections are fine other than USA.