Infant under 2 year old
For the purpose of travel on jetstar, an infant is defined as being not yet 2 years of age at the time of travel
ID requirements
For infant not occupying their own seat ,proof of age(under2)may be require,such as a birth certificate or passport (required for international travel). if you do not provide an acceptable form of identification upon request of check-in ,then you may not be allowed fo travel.
Baggage allowance
Infants not occupying a seat are not entitled to a carry-on or checked baggage allowance.However ,infant food and items required for infant use in-flight may be carried in addition to the accompanying adult's carry-on baggage allowance and baby accessories such as a stroller and porta cot may be checked-in free of charge in addition to the accompanying adult's checked baggage allowance.
Accompanying passenger requirement
All in fants must travel with a guardian who is 15 years of age or over or with a parent