The new ATR-42-600 aircraft, which are larger, quieter, and more efficient than the Saab 340s they replace, will operate services linking Glasgow with Islay, Benbecula, Sumburgh and Donegal from July, followed by Kirkwall and Derry from August.
These services will benefit from up to a 45% increase in capacity as the airline aims to offer greater availability of lower fares.
The introduction of the ATRs will also enable more year-round connectivity to domestic and international destinations via the Scottish hub. The first of the new aircraft will begin operations on 3 July with an 8am departure to Islay.