Earlier quoted context omitted.
I think YUL has some of the highest airport fees for any major North American city. For example, there's an "Airport Improvement Fee" of 30 CAD (on every flight) https://www.aircanada.com/us/en/aco/home/legal/surcharges.ht... My sense is that this is just one of many fees that hit you when you fly into Montréal. I think the total fees are more like 60-90 USD on every flight. (I'm not suggesting that high taxes are ba…
All Canadian airports have high AIFs (Toronto's is $25 for instance), and they are charged to everyone not just tourists. It's more to do with how airports are structured and managed in Canada versus other countries. It's a user-pay model rather than having them subsidized by the government. In fact many actually pay ground rent to the federal government.
And they wind up with fewer flights and worse route options to their own domestic airports as a result.
Ex: Burlington VT is about 40% Canadian, Plattsbugh + Niagara Falls NY are almost entirely Canadian traffic.