Are these planes found consistently on any routes in particular? The SimpleFlying article on their repainting seems to suggest they are sporadically used all over the place:

"1. TC-LGJ: was to be VP-BYE with Aeroflot; Currently in Istanbul for painting
2. TC-LGI: ex-VP-BXS; appeared this month in Hanoi, Stuggart, and Tel Aviv
3. TC-LGK: ex-VP-BYJ; Most recently seen in Ho Chi Minh City, Izmir, and Casablanca
4. TC-LGL: ex-VP-BYB; Serves Cape Town, Casabalanca and Amsterdam"

https://simpleflying.com/turkish-air...-airbus-a350s/

Hoping to fly one in May of this year, from Europe (or North Africa) to Asia