Aer Lingus says a planned strike by staff on Friday week will disrupt the travel plans of up to 40,000 customers.
The airline says it will have to cancel 204 flights as a result of the industrial action by cabin crew.
The trade union IMPACT claims the strike which is scheduled to take place on the Friday of the June bank Holiday weekend has been called because of unworkable rosters which are being imposed on staff.
The company is proposing setting up an internal panel to resolve disputes at the airline - and its calling on IMPACT to engage with this process.
Declan Kearney is Director of Communications with Aer Lingus - he says the strike will cost the company millions of Euro in lost revenue;
"Currently, we have 28 thousand people who are booked on those flights and those flights look like they need to be cancelled, in addition to that, there's probably an additional 10 thousand. So there's about 40 thousand people in total who would have been travelling on that day who will not be able to travel. They will either cancel their travel plans, it'll be loss of revenue to the tourism industry."
