Cheap Air Ticket From United States To Canada

Hi,
I am Rohit.I want to travel to Canada from United States.How i Get the Best and cheap Air Tickets ?

I usually get the cheapest airfare directly from the airlines rather than sites like Orbitz or whatever. Check them all and compare.

Alaska Airlines and Westjet have great prices.

Also try kayak.com - it has a great search feature which finds all flights on the web - and the interface is so easy - you can actually find good deals.