ATHENS (Reuters) - Greece's Aegean Airlines (>> Aegean Airlines S.A.) will complete the acquisition of its loss-making rival Olympic Air within two weeks, Olympic's owner Marfin Investment Group said in a statement on Wednesday.

Aegean won European Union approval earlier on Wednesday to buy Olympic Air at the second attempt, after a new antitrust investigation found Olympic would close down if the deal was blocked.

(Reporting by Angeliki Koutantou and Lefteris Papadimas; Writing by Karolina Tagaris. Editing by Jane Merriman)