Air Canada does charge for non-folding bikes that are boxed up cardboard bike box. I believe the provide bike box. Ask if they have a used one, just in case. One takes off pedals and turns the handlebars sideways to slide in whole bike. Bring your own tools.
With folding bike, it would be in your bike carry bag or plastic bag that they can provide. Best to check online for their latest policy, re charges/non-charges. Their policy has changed over the last few years.
Please realize that if you plan to bike from Vancouver airport to the B.C. ferry terminal at Tswassen, that bikes are forbidden in the George Massey Road Tunnel. There is a bike shuttle in Richmond that will take you out of the tunnel. Then one would have to get off and bike out. There is a map at the B.C. Ministry of Transportation website which is the party that provides this free service.
http://www.th.gov.bc.ca/popular-topi...sey/massey.htm
Of course a high top taxi will short circuit all that.