KLM will launch a daily service between Amsterdam Schiphol and Belfast City in May.
The Dutch carrier last operated a scheduled service to Northern Ireland 15 years ago in late 1999.
From May 18, the outbound flight will depart Schiphol daily at 1000 and arrive at Belfast City at 1040. The return service will leave Belfast at 1115 and land back in Amsterdam at 1350.
KLM will also launch new daily routes to Krakow and Montpellier on the same date.
The Krakow service will see a Cityhopper depart Amsterdam at 1425 and arrive in Krakow at 1620, with the return flight leaving Krakow at 1655 and landing in Amsterdam at 1855.
The Montpellier service will see an outbound flight take-off from Amsterdam at 1440 and land in Montpellier at 1635, with the return service departing Montpellier at 1710 and arriving in Amsterdam at 1910.
All three routes will be operated by KLM Cityhopper aircraft.
In November, KLM unveiled new slimline seating for its fleet of B777 aircraft (see news, November 14).