Iberia, the Spanish airline operated by International Airlines Group, has revealed that it will cancel hundreds of flights scheduled for next weekend due to industrial action.Some 250 flights scheduled for April 13th and 16th will be called off due to the strike organised by pilot labour union SEPLA. The company will announce the remaining flights to be affected at a later date.Iberia has signed customer protection agreements with other airlines in order to relocate passengers.SEPLA has convoked strikes for every Monday and Friday from April 9th to June 20th because it opposes the creation of low-cost airline Iberia Express, which has recently begun operating.By 11:48 in London, shares were down 1.76% at 178.2p.M.G.