Hong Kong's airport is set for a shift in volume this summer after airlines quietly swapped jet sizes and reduced scheduled flights to manage costs amid a global fuel crisis and following a jump in economy passenger fares to Europe.

Some airlines say they will operate all scheduled flights beyond June after initial consolidation efforts to offset higher jet fuel prices.

Hong Kong's airport is set for a shift in volume this summer after airlines quietly swapped jet sizes and reduced scheduled flights to manage costs amid a global fuel crisis and…