British Airways will provide business-class customers with a complimentary one-way upgrade to first class on flights between China and Europe. The offer is available for bookings from now until May 7.

www.britishairways.com.

Singapore Airlines passengers who book before May 31, departing from Beijing, Shanghai, Guangzhou, Shenzhen, Xiamen, Chengdu, Chongqing, Wuhan, Changsha and Kunming, between April 7 and July 10, can enjoy prices as low as 1,900 yuan ($306). The promotion covers such destinations as Singapore, Thailand and Indonesia.

www.singaporeair.com.

Qantas has opened up a new pathway to South America for customers in Hong Kong, with launch fares available to Santiago via Sydney, starting at HK $13,500 ($1742) for a return flight. By choosing to fly east with Qantas, Hong Kong travelers can, for the first time, reach Santiago in just over 26 hours with only one stop, compared to an average of 29 hours when flying through European hubs.

www.qantas.com.au.