On 30 August 2007, Norwegian ordered 42 new Boeing 737-800 aircraft, with options for 42 more, an order worth US$3.1 billion. This order was later increased by six aircraft in November 2009. In July 2010 15 of the options were converted to orders, and in June 2011 15 more options were converted, bringing the total order of new, owned 737-800s to 78 aircraft with 12 remaining options. Additionally, Norwegian introduced leased Boeing 737-800 aircraft into the fleet. The first leased 737-800 arrived at Oslo Airport, Gardermoen, Norway, on 26 January 2008.