Ryanair has hit out over air traffic control (ATC) strikes once again, saying they proved particularly turbulent last month.
The strike will take place next Thursday for a period of 24 hours.
The Irish no-frills carrier agreed to recognise trade unions for the first time in December a year ago, narrowly averting widespread Christmas strikes, after a staffing crunch gave pilots the upper hand in negotiations over pay and conditions.
There could be chaos on the way for thousands of holiday makers as Irish Ryanair pilots who are members of the Ialpa pilot union have voted overwhelmingly in favour of strike action.
Ryanair pilots working in Ireland have announced a planned 24-hour strike for next week on 12 July.
Ryanair said it was their were "disappointed" with the pilots' decision to strike, calling the walkout "unnecessary".
Pat Dawson, CEO of the Irish Travel Agents Association (ITAA) said a strike will disrupt travellers who have booked accommodation and made connecting travel plans, and will lead to additional costs to customers.
"In the meantime, we had again this morning (prior to this strike notice) invited FORSA to meet to resolve these issues at our Airside offices at 10am next Wednesday morning and we hope FORSA will take up this 19th invitation to meet".
The Dublin-based carrier said more than 1,100 flights were cancelled for the second month running due to air traffic control strikes over four weekends in June, as well as staff shortages in the UK, Germany and France.
Despite this being the norm with other airlines, it is not a policy that Ryanair have adopted.
The union is seeking an agreement that would govern base transfer arrangements and related matters.
It will be up to each union in each country to decide if they'll engage in industrial action or not if their demands aren't met.
This included: "voluntary/involuntary base transfer/allocation, command upgrade, allocation of annual leave and promotion". It claims pilots have been handed mandatory base transfers and have been denied requests for change, which has "a devastating effect on family life".