Stobart Air is to invest €25m in its business as part of a three-year growth plan announced this morning.
The airline - which was formed following a change in ownership at Aer Arann - said it would also add 60 staff to its workforce, made up of 24 pilots and 36 cabin crew.
Stobart Air currently operates 43 regional routes as part of franchise agreements with Aer Lingus and Flybe, and carried almost 1.5m passengers last year.
The carrier will have a workforce of 570 after the latest expansion, with all roles expected to be filled in the coming weeks.
As part of its expansion plans, the airline is to add two jet aircraft to its fleet for the first time, which it says will allow it to fly more passengers on longer distances.
Graeme Buchanan has also been promoted from CFO to Managing Director as part of a number of senior management appointments.
Separately, Dublin-based CityJet yesterday announced plans to recruit ten additional trainee pilots, which it says will fill demand on existing and new routes.