It said the deal had been signed but did not identify the buyer. Israel's past defense trading partners in Asia have included Singapore, South Korea, India and China.
The sale includes IAI aircraft, missiles and intelligence technologies, an Israeli defence industry source told Reuters. It is the company's most lucrative deal since the Indian navy bought an aerial defence system for $1.1 billion in 2009.
IAI also develops military and commercial aerospace technology, including communications satellites, and unmanned air systems. Like other Israeli firms, it was hit by the government's suspension last year of defence exports to Turkey after diplomatic feuding frayed a once-strong alliance.
Israel plans a public offering of 20-30% of IAI, its biggest defence contractor, this year, the Finance Ministry said in April.