Boeing has delivered four Next- Generation 737-900ER aircraft to Lion Air in December. The new aircraft will be deployed to increase frequencies on existing routes and to replace older aircraft in the fleet.

Lion Air, a Jakarta-based private carrier in Indonesia, is the launch customer of the 737-900ER. The airline operates an all-Boeing fleet, which includes MD-80s, MD-90s and 747s. It has a fleet of 41 737s including Classics and Next-Generation models.