For all cities with a population greater than five hundred thousand, Havana is closest to Cancun and farthest from Perth. The closest foreign city is Cancun. See below for the top 5 closest and farthest cities (domestically, internationally and by continent) and to see which cities, if any, Havana is the closest and farthest to. Filter to include all cities over 100k, 500k or 1 million in population.