Thats what Jet2 do and Thomas Cook also based an aircraft in the Canaries over the winter in particular. This is also largely to mitigate delays so the airline is not liable for EU261 claims.
In the case of Jet2 and TCX, crews are positioned there from other bases and spend several days there before other crews replace them.
Last edited by The Flying Stool; 25th Apr 2022 at 06:03.