The boss of the International Airlines Group, which owns Aer Lingus and British Airways, says he is "optimistic" over a legal challenge to the European Commission to end crippling strikes in France.
Willie Walsh has warned over long-term disruptions for passengers if it doesn’t succeed.
A number of airlines argue the walkouts breach the "fundamental principle of freedom of movement within the EU".
Tens of thousands of flights have been cancelled so far this year.