Aer Lingus to switch operations from Belfast International to George Best City Airport
AER Lingus is set to switch its operations from Belfast International Airport to George Best Belfast City Airport.
The Republic of Ireland's national carrier flies to Heathrow and seven European destinations from Belfast International Airport.
Flights could be moved to Belfast City within weeks and a formal announcement could be made next week.
It follows the end of BMI Baby services from the City Airport, which carried 400,000 passengers a year.
The change would make George Best airport the city's only Heathrow connection.
With the takeover of BMI by British Airways there had been worries over the future of that route.
BA has confirmed its commitment to the service.
Aer Lingus operates flights to Alicante, Barcelona, Faro, Lanzarote, Las Palmas, Heathrow, Malaga and Tenerife.
A spokesman for George Best Belfast City Airport said: "Following the announcement of the departure of bmibaby, we stated that we were confident that we would attract new airlines to Belfast City.
"This position has not changed and we expect to make several announcements in the coming weeks.
"We are certainly not in a position to comment on speculation regarding specific airlines at this stage."