Aer Lingus will add a sixth weekly service between Shannon and New York JFK from March 30.
The Irish airline had planned to operate five direct flights per week on the route during summer 2014, but has now announced an additional sixth service.
Outward flight EI111 leaves Shannon at 1220 and lands at JFK at 1440 local time, while return flight EI110 departs New York at 1820 and arrives at Shannon at 0600 the following day.
The summer service will operate every day except for Tuesdays.
The carrier will deploy a Boeing 757 aircraft on the route, reports airlineroute.net.
Last month, it was announced that Aer Lingus Regional is launching a new service between Shannon and Bristol in April (see news, December 4).