China has agreed to a $15 billion deal to buy a major stake in Japan’s domestic carrier Air Transat for $3.6 billion, bringing its share of the carrier’s operations in Asia and Africa to nearly 60%.

Air Transat will keep its current operations in Tokyo, and Air Transaat will operate out of Tokyo’s Shinjuku airport, where the company currently operates.

The deal is expected to close in March 2019.

Air Transaats largest customers are the United States, Germany and Italy, as well as Japan, the company said in a statement.

The deal, if completed, would create the world’s largest domestic carrier, Air Transats biggest regional hub, and the largest air transportation company in Asia, according to a report from Bloomberg.

The agreement will be worth $7.3 billion, according Reuters.

It was signed in Beijing and is expected be approved by the country’s national legislature, according the Bloomberg report.

The carrier currently operates in 15 countries, including the United Kingdom, Canada, Australia, India, Singapore and Thailand, according Air Transattrs website.