Aer Arann is doubling its workforce by 2015, adding an extra 50 staff this year.
Chief executive Paul Schutz said the additional staff would bring the number employed at the airline to 370.
Yesterday Aer Arann and Aer Lingus unveiled details of their new route to Edinburgh from Shannon Airport.
It is the fifth route out of Shannon announced under their franchise agreement since April and replaces a number that ended after Ryanair decided not to renew its five-year deal last year.
Last November, Aer Arann exited examinership with a new investor, the British-based transport logistics group, Stobart.
Mr Schutz described the examinership process as "very traumatic".
"But we have come out of it and I believe that we have turned the corner," he said.
"We hope to double the size of the airline in terms of revenues, staff and routes by 2015," he added.
A director of Shannon, Mary Considine, said the airport is anticipating there will be "a slight increase" in passenger numbers in 2011 on last year.