PT Lion Mentari Airlines, operating as Lion Air, is Indonesia’s largest private carrier and Asia’s first hybrid carrier which offers both economy and business-class seating,[1] based in Jakarta, Indonesia. Lion Air also flies to Malaysia, Singapore and Vietnam. Its main base is Soekarno-Hatta International Airport, Jakarta. It operates scheduled passenger services on an extensive domestic network from Jakarta to 42 destinations with 226 daily flights (at December 2009).

Lion Air is on the list of air carriers banned in the European Union due to safety concerns along with many other Indonesian carries as of December 2009.

The airline was established in October 1999 and started operations on June 30, 2000, when it began scheduled passenger services between Jakarta and Pontianak using a leased Boeing 737-200. It is wholly owned by Rusdi Kirana and family. The airline is also planning to become an IATA member, therefore becoming the second IATA Indonesian carrier behind Garuda Indonesia.

On 13 November 2009, Lion Air commenced direct flights between Jakarta and Jeddah, Saudi Arabia with a twice weekly service operated by Boeing 747-400 aircraft.

In January 2008, Lion Air announced plans to start operating from Australia.The new airline, to be named Lion Air Australia, is set to operate as a domestic and international airline. There has been no news on this airline since.

Online booking for Lion Air is available at the official website of Lion Air Airlines - http://w3.lionair.co.id/