Flying just 20% capacity in the three months to the end of March resulted in the group posting the operating loss before exceptional items of 1.14 billion euros.
“International passenger traffic was down almost 89% and is showing no signs of recovery in the current environment,” IATA’s new director general Willie Walsh said at a presentation on Wednesday.
Ireland's sovereign wealth fund said earlier this month that it had provided a 150 million euro ($181.2 million) three-year loan to the airline that is also a recipient of the state's wage subsidy scheme for firms hit by the COVID-19 pandemic.
To say very clearly, Aer Lingus will not be allowed to fail. It is already receiving substantial financial support from government.
BA, owned by IAG, said on Friday it would trial the use of a mobile travel health passport, VeriFLY, following American Airlines, which is already using it.
Flying is currently at minimal levels, with flight volumes in Britain down more than 80% due to lockdowns and restrictions which ban most people from travelling.