Lost Horizon - 1973 was released on:
USA: 14 March 1973 (New York City, New York)
USA: 17 March 1973
UK: 26 March 1973 (70mm version)
Denmark: 11 September 1973
West Germany: 14 September 1973
Sweden: 19 September 1973
Finland: 23 November 1973
Spain: 8 February 1974 (Madrid)