In 2026, baggage allowance for infants depends heavily on whether you have purchased a separate seat for them. For "lap infants" (traveling for free or a 10% fare), most major international airlines (like Delta, Emirates, or Air India) allow one checked bag of up to 10kg (22lbs) plus one collapsible stroller or car seat free of charge. However, many "Basic Economy" or low-cost carriers (like easyJet or Spirit) do not offer any checked baggage for lap infants, only allowing the stroller. If you have purchased a full seat for your infant, they are typically entitled to the same standard baggage allowance as an adult passenger based on their fare class. Additionally, almost all airlines allow you to carry a small "diaper bag" in addition to your own carry-on allowance. It is crucial to check your specific airline’s policy before heading to the airport, as some now require strollers to be "gate-checked" while others allow small, "cabin-approved" strollers (like the Babyzen YOYO) to be stored in the overhead bins if they meet specific size dimensions.