In 2026, American Airlines follows a high-fidelity family seating guarantee that ensures children aged 14 and under are seated next to at least one accompanying adult at no extra cost, provided they are on the same reservation. This policy was part of a broader "High-Fidelity" industry push to eliminate "junk fees" for families who previously had to pay for seat assignments just to stay together. The airline's system automatically searches for open seats during the booking process and check-in to link family members. However, it is a high-fidelity best practice to book early, as the guarantee is subject to seat availability; if a flight is completely full, the airline may have to ask for volunteers to swap seats at the gate. As of February 2026, American remains one of the more transparent carriers regarding this policy, often boarding families with young children immediately after the "Group 1" priority block to ensure a high-fidelity and stress-free start to their journey.