Trade unions representing other staff at the airline are meeting today to discuss the implications of the recent pay hike awarded to pilots.
Forsa, Unite, SIPTU and other unions have previously reached wage agreements, which allow them to go back to management if another group of workers secures a better deal.
It impacts cabin crew, ground staff, caterers and cleaners among others.
Business journalist Joe Lynam says the implications for Aer Lingus could be huge:
"They could demand extra pay, because the pilots got extra pay, and that could be in breach of a wider agreement, that if the pilots get extra pay, it would reopen deals that were done with the previous unions, it could be very messy, few weeks for Aer Lingus".
