Aerolineas Argentinas canceled some international flights on Friday due to a strike by pilots and technicians, a company official said.

Employees walked off the job on Thursday to demand wage increases, causing delays and cancellations of domestic and international routes.

"All Aerolineas' flights were canceled up until 4 p.m. (1900 GMT)," an official at the airline said.

The airline flies to Miami, New York, Madrid and Rome as well as to 33 domestic destinations. It was not immediately clear which flights had been affected.

Daniel Guiro, a leader of the pilots' union, said the pilots were asking for a 45 percent increase. "There is no date set for it (the strike) to end. This is going to continue until we find a solution," he told local radio.

Aerolineas Argentinas is 98 percent owned by Spanish group Interinvest and competes in the domestic market against Chile's LAN Airlines, which began operations in Argentina in mid-2005.