Stobart Air, which operates Aer Lingus regional routes, said it will resume its international flights with enhanced health and safety measures on a phased basis from 14 July.
From 14 July, flights from Dublin-Edinburgh and Dublin-Glasgow will resume to facilitate essential travel, as per government guidelines.
Further services will resume on a phased basis across August and September.
The airline said it has implemented enhanced health and safety measures to protect its staff, crew and passengers and is following advice from the European Aviation Safety Agency and the European Centre for Disease Prevention and Control.
The new safety measures include the mandatory wearing of face coverings or masks on all flights with the exception of small children and those who are unable to wear a face mask for medical reasons.
In-flight services will also be suspended to reduce interaction between cabin crew and passengers, while passengers will also be encouraged to remain seated while on board.
Stobart Air is introducing new boarding and exiting procedures to reduce passenger interaction and passengers will board and disembark the aircraft in small groups and according to seat row numbers.
At the boarding gate, customers will scan their own boarding card and show their passport or ID to the staff member, making this process contactless.
The airline also said it is introducing "significantly enhanced" cleaning and disinfection procedures on all aircraft after every flight, in addition to a deep clean sanitisation overnight.
Andy Jolly, Managing Director of Stobart Air, said that while the impact of Covid-19 has resulted in an unprecedented reduction in passenger demand across the aviation industry globally, Stobart Air is committed to providing essential connectivity between Ireland, and the UK and Europe into the future, in line with Government guidance.
"Covid-19 has instilled widespread uncertainty globally. Passengers can be assured that enhanced health and safety measures in line with European Aviation Safety Agency and the European Centre for Disease Prevention and Control guidance are now in place to protect them, our staff, and our airline partners," Mr Jolly added.