Any child up to the age of 24 months is classified as an "infant," and requires an escort.
Book as early as possible for best accommodations. There are a limited amount of cots/bassinets on board. Bassinets are available free of charge (first come, first serve) for infants up to age 9 months.
See
Flying With Infants for more info.
Infants are also entitled to free luggage:
Baggage Allowance on EL AL Flights
Also, this post by
hnussbacher:
Originally Posted by
hnussbacher
The site:
http://www.elal.co.il/ELAL/English/A...lAlloeance.htm
lists the rules for checked luggage and includes the details for an infant stroller or car seat (see bottom of page) that can be an additional piece of luggage.
There is a loophole here since it does not state that you have to be traveling with an infant and I know people who have actually used this loophole to bring to Israel a newly purchased stroller or car seat as a 3rd piece of luggage.