By Foo Yun Chee

BRUSSELS (Reuters) - Europe's top court should reject an appeal by Air France KLM and its Dutch unit KLM, British Airways, Singapore Airlines and some of their peers against cartel fines imposed by EU antitrust regulators in 2017, an adviser to the court said on Thursday.

The European Commission seven years ago reissued fines totalling 776 million euros to 11 airlines for taking part in a cartel to fix air cargo prices, after the Luxembourg-based General Court scrapped its first decision levied in 2010 due to a procedural error.

The carriers took their grievance back to the lower tribunal which threw out their challenges in 2022, prompting them to appeal to the Court of Justice of the European Union (CJEU).

The court's judges should dismiss their appeals, CJEU Advocate General Athanasios Rantos said in a non-binding opinion, as he sided with the EU competition enforcer.