Originally Posted by GUWonder
A good number of carriers from muslim-majority countries don't display/announce anything special at all.
The food is usually halal, although there are some exceptions.
Observation of prayer times by individual muslim passengers is all over the board when it comes to traveling, especially travel over time zones. How airlines deal with it -- or don't -- is also all over the board, but most basically skip the matter. Also, Ramadan doesn't mean passengers will starve in-flight.
(I say that because if observation of prayer times was standardized in-flight, there'd be some food issues related to standardization of times too.)
Given this is Turkish Airlines, religion really does not come into play any more than it does for Lufthansa.
Usually on Muslim airlines the food will be halaal (never seen anything else). However, you won't really note anyway.
I once flew during Ramadan from MUC to DXB. Whilst it was broad daylight on the plane they announced that sun had set on the ground below us so that Muslim passengers could break the fast. EK had two servings of dinner on that flight.