The drama is based on the true-life story of CIA exfiltration expert Tony Mendez, who concocted a fake Hollywood production - named Argo - in order to free six American hostages during the Iranian Revolution in 1980.
Affleck, who also stars in the movie, was joined on the red carpet by Bryan Cranston and John Goodman. The drama's supporting cast includes Alan Arkin, Kyle Chandler, Clea Duvall, Victor Garber and Scoot McNairy.
Argo opens in UK cinemas on November 7.
> 'Argo' Bryan Cranston: 'Ben Affleck's a tremendous director'
> 'Argo' review - BFI London Film Festival
Photo gallery - Argo premiere in pictures:
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