United Airlines' Infant Policy aims to make flying with babies stress-free. Children under 2 can travel on your lap for free within the U.S., with international flights typically incurring a fee. If you prefer, you can purchase a seat for your infant for added comfort. Remember, you can bring essentials like diapers, formula, and baby food without adhering to the 3.4-ounce liquid rule. United Airlines is dedicated to accommodating families, ensuring a seamless and enjoyable journey with your little ones. For any inquiries or assistance, you can reach United Airlines at +1-888-660-0563.