After the War, Henryk de Kwiatkowski worked at a factory job and put himself through university. In 1952 he emigrated to Canada to work as an engineer at the Pratt & Whitney aircraft company in Montreal. In 1957, he went to the United States where he established Kwiatkowski Aircraft Ltd. and Intercontinental Aircraft Ltd. headquartered in New York City making his fortune through leasing and brokering the sale of used commercial airplanes.