Iirc a large part of Canadian airline ticket prices come from the fact that airports impose large fees on tickets to pay for improvements to the facilities, rather than subsidizing the cost from municipal and provincial taxpayers.
Canadian airport usage is supported through user taxes rather than general revenue.
There are some startups now in Canada offering lower fares but it's not that much cheaper and they frequently fly to international destinations, which are more lucrative anyhow.
Most (all?) EU airports are not subsidised by govt (indeed I imagine it would be illegal under EU state support rules). Ryanair/easyJet/wizzair etc all offer crazy low fares.
Canadian airport usage is supported through user taxes rather than general revenue.
There are some startups now in Canada offering lower fares but it's not that much cheaper and they frequently fly to international destinations, which are more lucrative anyhow.