ISTANBUL, June 9 (Reuters) - Turkey's TAV said on Friday it had signed a deal with Saudi Arabia's civil aviation authority GACA on operating the country's Yanbu, Qassim and Hail airports in partnership with Al Rajhi Holding.

In a statement to the Istanbul stock exchange, TAV said the deal to operate the airports for 30 years was signed on June 8. It said that after a planned investment of $400 million, the number of passengers that could be served by the airports would rise to around 11.5 million annually from 3.6 million in 2016

(Reporting by Can Sezer; Editing by Daren Butler) ((daren.butler@tr.com; +90-212-350 7053; Reuters Messaging: daren.butler.thomsonreuters.com@reuters.net))