Aer Lingus could relaunch a service between Dublin and San Francisco if a deal to lease three additional aircraft goes ahead, the Irish Independent has learnt.
It's understood the carrier might consider the service to the US west coast if the lease agreement is eventually signed this year.
Aer Lingus is in negotiations to lease the aircraft and would use two of them to beef up services between Shannon and Boston and New York.
That would free up an existing aircraft and leave it with one of the leased planes to deploy on other routes from Dublin.
The San Francisco route could be an option, as could a service to Canada, it is believed.
Aer Lingus boss Christoph Mueller has previously said that he's keen to inaugurate a service between Ireland and Canada.
The airline launched a service between Dublin and San Francisco in 2007 but pulled the route in October 2009 as the economic downturn worsened and Aer Lingus sought to slash costs.
It had also terminated a service it used to operate to Los Angeles.
It currently provides services to San Francisco via codeshare agreements with United and Jetblue.
"Our transatlantic schedule for 2014 will not be finalised until June of this year, at the earliest. No decision has been made at this point in time," said an Aer Lingus spokesman when asked about the possibility of a return of San Francisco flights.
There are strong business links between San Francisco and Ireland, with companies from the city such as Google, Facebook, Apple and LinkedIn all having significant bases here.
Aer Lingus currently flies to Boston, New York, Chicago and Orlando from Ireland. It has recently increased capacity on routes to Boston and New York.