Frontier Airlines, of Denver, Colorado, has finalized a contract for six A320s, the first time the low-cost carrier has selected the aircraft type. The incremental order comes less than one year after Frontier converted to an all-Airbus operator. Also as part of the agreement, Frontier is converting four of its existing A319 orders to A320s, and four other previously ordered A319s to four A318s. Frontier will receive its ten A320 aircraft starting in early 2008 through 2010 and the A318 aircraft in 2007. In addition to these new Airbus orders, Frontier anticipates obtaining three additional A319 aircraft through arrangements with leasing companies.