Montreal / Pierre Elliott Trudeau International Airport — Montréal, Canada

Montreal-Pierre Elliott Trudeau International Airport, known by the code YUL, occupies a site in Dorval on the western part of the island of Montreal. Originally called Montreal-Dorval, it was renamed in 2004 in honor of the former prime minister, a change that followed years in which nearby Mirabel Airport handled overseas flights while Dorval managed domestic and continental traffic. Once Mirabel's passenger operations wound down, YUL absorbed the full mix of routes and grew into the busiest airport in the province of Quebec. It now functions as one of Air Canada's principal hubs, alongside Toronto and Vancouver, and serves as a major transatlantic gateway reflecting Montreal's ties to France and francophone Europe. Travelers heading onward to the United States can clear customs at an on-site preclearance facility before departure. The airport also supports a busy general aviation sector central to the region's economy.