It expects it will take two years to get demand and pricing back on track.
Ryanair's planning to cut up to 3,000 jobs because of the "unprecedented" coronavirus pandemic.
The airline says it expects it to take at least two years to get passenger demand and pricing back to the levels seen last year.
In a statement, the airline says it expects to operate less than 1% of its scheduled flying program in May and June of this year.
Its chief executive, Mullingar's Michael O'Leary, says a limited flight programme will begin in July:
Pilots and cabin crew are set to be affected, along with employees in the airline's head office in Dublin.
The company expects to announce a loss of €100 million in the first three months of the year alone.
Mr. O'Leary says staff are also facing long term pay cuts:
Fórsa, which represents Ryanair cabin crew and pilots, says it will be seeking an urgent meeting with the airline's management.
Fine Gael TD Fergus O'Dowd, who chaired the Oireachtas transport committee, says the jobs blow is devastating news:
He says only a Covid-19 vaccine will solve the airline crisis.
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