The new deal starts in April next year and runs for seven years, with the option to extend by a further three years. It covers 1,700 poster sites at BAA's seven UK airports -- Gatwick, Heathrow, Stansted, Glasgow, Southampton, Aberdeen and Edinburgh.
The deal, which follows a review launched last August, also includes sites at Heathrow's Terminal 5, which is set to open in March 2008.
Stephen Nelson, BAA retail director, said: "JCDecaux Airport emerged as the strongest candidate and we are looking forward to working with them to further push the boundaries in what media can achieve at BAA, particularly with the exciting opportunities coming at Terminal 5."
JCDecaux has held the account since 1999 when it bought Sky Sites, which had been retained since 1989. Other airport business handled by the outdoor advertising firm includes the New York Port Authority account that it won last year, covering John F Kennedy International, Newark Liberty International and La Guardia airports.
It also renewed its account with Hong Kong International airport earlier this year.
Jean Francois Decaux, JCDecaux chairman and co-chief executive, said: "This is a long-term partnership and comes at a very exciting time with the opening of Terminal 5 only two years away and the potential subsequent development of Heathrow East.
"This unique opportunity will enable us to bring to market many new innovative channels and sponsored services, and create a new digital showcase across BAA's seven UK airports."
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