Hong Kong's flagship airline Cathay Pacific warned Wednesday that increasingly violent protests in the financial hub had hit booking demand.

Announcing interim results that showed the airline in the black after huge losses in the first half of last year, chairman John Slosar warned of further impact to the business in response to both the unrest and global trade tensions. "Geopolitical and trade tensions are expected to continue to affect the global economy and, in turn, demand for air travel and air freight," he said.

“The protests in Hong Kong reduced inbound passenger traffic in July and are

adversely impacting forward bookings. The previously troubled airline reported first-half earnings of 1.35 billion HKD ($172 million), compared with a loss of 263 million HKD in the same period last year.

Despite the uncertainty, Slosar said he still expects to achieve even better results in the second half of the year, as is usual in the aviation industry. Images of clashes between masked protesters and police firing tear gas in the streets of Hong Kong have made continued global headlines, with no end in sight to the unrest.

On Monday, more than 160 flights at the city's airport were listed as cancelled as a general strike caused transport chaos in the city.