Thanks !
i am planned to go at the start of march. the date is not final yet.
i monitor the departure/landing times on elAl's website all the time.
it seems that this flight is almost always on time, and arriving even 10-20 minutes earlier.
2 weeks ago we departed 30 minutes late, but landed right on time.
the walk to immingration was about 10 minutes, and then the immigration had queues of about 25 minutes (but as i understand, the transit immigration is in a different place, so maybe less people there...)