Book a Flight
For some of the best flight deals in Canada make sure you check rates on:
itravel2000.com - this online travel booking company usually has last minute deals and will usually show cheaper rates than other website.
expedia.ca - expedia often has seat sales and discounts so keep checking rates on this site. If you see a deal grab it right away because once the 'discount quota' is filled you won't be able to get the same great rates.
Flight Centre - This is a physical travel agency that has offices all over Canada. If you'd like to speak to a travel agent in person this is probably your best bet. You'll get sound travel advice and the best deals the agent is able to find.
hotwire.com - The online air travel booking site offers some of the best deals possible. You'll find cheap fares at discount prices. Make sure you check around and compare with the other sites above as well.