Montréal–Trudeau International Airport or Montréal–Trudeau, formerly known and still commonly referred to as Montréal–Dorval International Airport, is an international airport in Dorval, Quebec, Canada. It is the only Transport Canada designated international airport serving Montreal and is situated 20 km west of Downtown Montreal. The airport terminals are located entirely in the suburb of Dorval, while one runway is located in the Montreal borough of Saint-Laurent.