Dorval ( /dɔrˈvæl/) is a city on the island of Montreal in southwestern Quebec, Canada. As of the 2006 Canadian Census, the population increased by 2.2% to 18,088. Although the city has the largest surface area in the West Island, it is among the least densely populated. Pierre Elliott Trudeau International Airport constitutes about 60% of the city's land, forcing all of Dorval's population to be concentrated in the southern part of the city.