i worked for EL AL up to about 6 months ago. Now I am 30.
At EL AL, there is a wide age range. I would guess that the average is late 20's.
That's because after 5 -6 years of working, most of the F/A are let off, since most of the F/A are considered Temps, even after 8 or 9 years working. My cousin has been flying since 1994, and is still considered Temp. She is probably the most senior of the Temps. There is also a group of about 200 Permanant F/A, who are all Pursers. They are all much older, i think the youngest are in their mid 40's and the older up to 65.
At EL AL it is also a roster system, whereby only those who are qualified to work in Business Class can make a request to fly. (Usually after a year and a half).
Since every flight need to be made up of a certain crew configuration, then although the juniors can't make requests, they can find themselves flying to any destination, from their very first flight. The long hual and short haul are mixed. We are qualified in all the a/c and can fly to all the destinations. IT