Ryanair on Thursday threatened to cancel orders for hundreds of Boeing aircraft if a U.S.-led tariff war leads to materially higher prices, and said it could look at alternative suppliers, including Chinese planemaker COMAC.

Ryanair Holdings Plc would consider canceling its 330 Boeing Co. aircraft orders and shift to alternate planemakers if tariffs significantly affect the price of the planes, the Irish airline’s chief executive officer,

Ryanair (NASDAQ:RYAAY) (OTCPK:RYAOF) issued a sharp warning that it could walk away from its multi-billion-dollar order of Boeing (NYSE:BA) jets if new U.S.-imposed tariffs significantly inflate the cost of the aircraft,