Ryanair ran just a fraction of flights last month as coronavirus forced the grounding of most services.
Passenger carryings collapsed from 13.5 million year-on-year to just 40,000.
Europe’s largest no-frills carrier reiterated a warning that it will take until July for any resumption of normal services.
The airline ran just 600 flights in April against the usual schedule of 75,501, including a number of rescue and medical flights for EU governments.
“Due to multiple EU government flight bans and restrictions, Ryanair expects to carry minimal traffic during the months of May and June as well,” the airline said.
Ryanair announced 3,000 job cuts on Friday while warning that recovery in passenger demand from the coronavirus crisis could take two years.