The Chambers of Commerce of Ireland has claimed a proposed new "open skies" agreement between the EU and US could boost Ireland's economy by 10%.
The organisation said a report it commissioned found the main beneficiaries of the agreement, if it is implemented, would be Aer Lingus and Dublin Airport.
The report said the "open skies" deal would present some difficulties for Shannon Airport, but would be largely positive for the rest of the country.
The agreement is designed to remove existing regulations restricting air travel between the EU and the US.