The city’s flag carrier said on Thursday the increase would apply to tickets issued on March 18 or later.

“The price of jet fuel has approximately doubled since March amid the latest developments in the Middle East,” Cathay said, citing the surge as the reason for the higher charge.

Fuel surcharges for long-haul Cathay flights, such as those between Hong Kong and destinations in North America, Europe and the Middle East, as well as between Japan and the US, will rise to HK$1,164 (US$149) from HK$569, a 104.6 per cent increase.

The charge for medium-haul flights between Hong Kong and destinations in South Asia will also increase to HK$541 from HK$264, a 104.9 per cent rise.

Meanwhile, short-haul flights will be subject to a fuel surcharge of HK$290 per trip, up from HK$142.