PARIS (AFP, REUTERS) - Half of Air France's long-haul flights out of Paris on Thursday (Feb 22) will be cancelled due to a strike by pilots, cabin crew and ground staff, the carrier said.

The airline said on Wednesday it expected to maintain 75 per cent of its scheduled service but only 50 per cent of its long-haul flights and advised travellers to postpone their trips until Feb 27 at no extra cost.

"Disruptions and delays cannot be excluded," Air France added in a statement.

The staff are demanding a 6 per cent across-the-board pay increase.

Management is offering a basic increase of 1 per cent to be paid in two instalments and a range of incentives, which trade unions have dismissed as "small change".

The Air France-KLM group posted a 42 pe cent increase in its operating profit to 1.49 billion euros (S$2.43 billion) in 2017.