For all cities with a population greater than one million, Perth is closest to Adelaide and farthest from New York (NY). The closest foreign city is Surabaya and the farthest domestic city is Brisbane. See below for the top 5 closest and farthest cities (domestically, internationally and by continent) and to see which cities, if any, Perth is the closest and farthest to. Filter to include all cities over 100k, 500k or 1 million in population.