Ryanair has cut more than 250 jobs across its offices in the UK, Ireland, Spain and Poland.
The move comes just a few days after the budget airline revealed plans to restore 1,000 flights a day from July 1, covering 90% of its normal routes.
Jobs will be cut through a combination of probation/fixed term contract ends, resignations and redundancies.
Ryanair's people director Darrell Hughes said: "This is a very painful time for Ryanair, our crews and our people supporting operations from our Dublin, Stansted, Madrid and Wroclaw offices.
"While we expect to reopen our offices from 1 June, we will not require the same number of support team members in a year when we will carry less than 100 million passengers, against an original budget of 155 million.
"Regrettably, we will now have a small number of compulsory redundancies in Dublin, Stansted, Madrid and Wroclaw to right-size our support teams for a year when we will carry less than 100 million passengers due to the Covid-19 crisis.
"These job losses were communicated to individual team members this week, and they will not be returning to work in our Dublin, Stansted, Madrid or Wroclaw offices when they reopen on 1 June.
"We are continuing to meet our pilot and cabin crew unions across Europe to finalise up to 3,000 job cuts and 20% pay cuts as we return to approximately 40% of our normal flight schedules from July onwards."
The news of job cuts comes after the airline announced on Tuesday it would be back up to 40% of its normal flight schedules from Wednesday 1 July 2020, subject to Government restrictions on intra-EU flights being lifted and public health measures in airports.
That will see it operate almost 1,000 flights a day, covering restoring 90% of its pre-coronavirus routes.
Ryanair chief executive Eddie Wilson said: "After 4 months, it is time to get Europe flying again so we can reunite friends and families, allow people to return to work, and restart Europe's tourism industry, which provides so many millions of jobs."
