Jetstar baggage rules encompass both carry-on and checked baggage allowances. Typically, passengers are allowed one carry-on bag with maximum dimensions of 56cm x 36cm x 23cm and one small personal item. Checked baggage allowances vary based on fare class and route, ranging from 15kg to 40kg per bag for Economy Class passengers. Business Class travelers usually enjoy higher allowances. Excess baggage fees may apply for surpassing the allowance, and additional charges may be incurred for oversized or special items. Passengers should refer to Jetstar's official website or contact the airline directly for precise details on baggage rules.