Madrid ( CNN ) -- Pilots for the Spanish airline Iberia resumed their strikes on Monday , forcing the cancellation of 124 flights , in a grievance over the company 's new low-cost carrier , Iberia Express . The pilots see a threat to their jobs or working conditions from the budget airline , which started flying on March 25 despite 12 one-day pilots ' strikes earlier this year . The earlier strikes cost the company 36 million euros ( $ 47 million ) . Now the pilots have planned 30 more one-day strikes , every Monday and Friday , through July 20 . On Monday , the 124 canceled flights were 38 % of Iberia 's 330 scheduled flights , a percentage of cancellations similar to the earlier strikes . Iberia , which had advance notice of Monday 's strike , tried to place passengers , many returning from Easter vacations , on alternative flights . Iberia lost 98 million euros ( $ 129 million ) last year , especially on short and medium-range flights in Spain and nearby in Europe . It launched Iberia Express aiming to cut the costs of operating those routes , an Iberia spokeswoman said . But a spokeswoman for the pilots union said the new budget airline violates key points of a previous agreement between pilots and Iberia . The union has offered for pilots to take deep salary cuts if flying for Iberia Express , but negotiations broke off last month . Iberia has filed a court complaint , seeking to stop the strikes and demanding compensation . A ruling could still be weeks away . Iberia employs about 1,400 pilots . The airline has made deals with most other employees regarding the budget carrier . Iberia Express currently serves just four routes , all in Spain : Madrid to Palma de Mallorca , Malaga , Seville and Alicante . But by the end of this year , it expects to carry 2.5 million passengers to 20 destinations , including Dublin , Ireland ; Amsterdam , Netherlands ; and Naples , Italy . The company would have 14 planes and 500 employees .
Iberia pilots plan a one-day strike every Monday and Friday until July . They see a threat to their jobs or working conditions from budget airline Iberia Express . Monday 's strike led to 124 canceled flights , 38 % of Iberia 's scheduled flights . The union says the company is trying to cut costs by reducing its workforce.