| Country | Date | |
|---|---|---|
| USA | 27 September 1956 | (New York City, New York) |
| USA | October 1956 | |
| Austria | March 1957 | |
| West Germany | 28 March 1957 | |
| Australia | 1 August 1957 | |
| Finland | 2 August 1957 | |
| Sweden | 11 November 1957 | |
| Portugal | 13 November 1957 | |
| Denmark | 2 February 1959 | |
| Iran | 27 February 1961 | |
| Spain | 22 April 1963 | (Madrid) |
| Einst kommt die Stunde | Austria / West Germany |
| Al borde del infierno | Spain |
| Brink of Hell | UK |
| Destination okänd | Sweden |
| Je reviens de l'enfer | France |
| Khalabanan az djan gozashteh | Iran (imdb display title) (Persian title) |
| Lentäjän paluu | Finland |
| O Cobarde | Portugal (imdb display title) |
| Raketfly X 2 | Denmark |
| Rumo ao Desconhecido | Brazil |
| Soli nell'infinito | Italy |
| Sto heilos tis Kolaseos | Greece (transliterated ISO-LATIN-1 title) |
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| External reviews | Main details |