It could mean massive disruption to holidaymakers.
Ryanair pilots based in Ireland have voted for industrial action.
The directly-employed pilots voted by 94% to back the strike as they're unhappy with pay and working conditions.
Workers are expected to walk off the job unless Ryanair agrees to union pay proposals by Monday August 12th. It says it will write to management early next week to outline plans for action unless Ryanair agrees to union pay proposals by next Monday.
The move could cause significant disruption and lead to a number of flight cancellations.
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.
