The Nav/Ins "surcharge" is not a tax but is rather a charge by the airline to cover NavCan fees and insurance. Some airlines also add a fuel surcharge. These charges should really be included in the fare so that you know what the airline is receiving and what the government or the airport authority is receiving.

I find it really disingenuous that the airlines (and JetsGo is especially bad for this) advertise a "fare" and then add on "surcharges" that look like taxes to the consumer.