Saint John Airport — Saint John, Canada

Saint John Airport, coded YSJ, serves New Brunswick's largest city and industrial port on the Bay of Fundy, famous for having the world's highest tides. YSJ offers scheduled flights to Toronto, Montreal, and other Canadian cities, supporting Saint John's oil refining, shipbuilding, and pulp-and-paper industries alongside tourism drawn to the Reversing Falls and Fundy coastline. The airport sits on a plateau above the fog-prone harbor, occasionally experiencing weather delays typical of the maritime climate. As one of the more substantial airports in this list, YSJ provides genuine commercial connectivity for southern New Brunswick's business and tourism sectors year-round.