Irish-based Ryanair pilots have voted to strike.
Directly-employed Ryanair pilots based in Ireland have voted by 94% to back industrial action.
They are unhappy with pay and working conditions.
Their union says workers will walk off the job unless the airline agrees to union pay proposals by Monday August 12th.
The union submitted a pay claim to the company in late March 2019, seeking pay levels and structures that are in line with sector norms.
It says the airline, which posted profits of €1 billion last year, is in a healthy financial position and can fairly reward its pilots.
Fórsa assistant general secretary Ian McDonnell said pilots "feel they have been forced into contemplating potentially-disruptive industrial action".
He said Ryanair "seems either unwilling or unable to negotiate in a professional and constructive manner".
Some 180 directly-employed Ryanair pilots based in Ireland, who are members of Ialpa, were eligible to vote in the ballot.
Ryanair pilots employed by agencies were not balloted.
British-based pilots at the airline have already confirmed they will strike at the end of August.