Aer Lingus has withdrawn staff travel privileges from all cabin crew who participated in Friday's strike over rosters.
Staff at the airline have been entitled to flights at reduced fares for themselves and their families.
A round trip to Malaga for staff would cost around €50, while a return flight to US east coast destinations such as Chicago or New York would cost around €150, including taxes and charges.
Talks between management and the cabin crew union IMPACT are due to take place tomorrow.
However, in a letter sent to staff at their homes, the company informed them that the flight privileges were being withdrawn with immediate effect.
The company did not say when privileges might be restored.
It also notified cabin crew who went on strike that they will lose a day's pay in the next payroll run.
IMPACT has said it would not be commenting on the withdrawal of the travel privileges.
Ryanair Chief Executive Michael O'Leary had called for sanctions for cabin crew whose strike had grounded almost all Aer Lingus flights.
He had specifically urged management to withdraw the staff travel privileges.