Generally, no—lap children (under age 2) do not receive their own personal item or carry-on allowance on most domestic and international airlines in 2026. Because they do not have a paid seat, their luggage is typically tied to the accompanying adult's allowance. However, most 2026 carriers—including Southwest, JetBlue, and Air India—do allow parents to bring a diaper bag as an extra "essential" item in addition to the adult's standard carry-on and personal item. Furthermore, almost all airlines allow you to check one stroller and one car seat free of charge for a lap infant, either at the ticket counter or the gate. If you want your child to have their own baggage allowance, you must purchase a separate seat for them, which then grants them the full carry-on and personal item quotas of a standard "ticketed passenger."