A Thai Airways International Pcl aircraft, center, stands parked between Nok Airlines Co. aircraft on the tarmac at Don Mueang International Airport in Bangkok, Thailand, on Thursday, June 20, 2013. Nok Air, a budget carrier controlled by Thai Airways, rose as much as 5.8 percent in its trading debut on the Stock Exchange of Thailand today. Photographer: Dario Pignatelli/Bloomberg via Getty Images