Airport lounge policies for children vary significantly by the specific lounge brand and the traveler's access method (e.g., Priority Pass vs. Airline Status). Generally, many independent and premium lounges allow children under 2 years old to enter for free as long as they are with a qualifying adult. However, some lounges are much more generous; for example, many Encalm and Mastercard-affiliated lounges allow children under 6 years old to enter for free. Conversely, major US airline lounges (like Delta Sky Club or United Club) typically require a guest pass or a separate fee for any child over the age of 2. If you are using a "guest benefit" from a high-end credit card, the child often counts as one of your allotted guests unless they meet the lounge's specific "infant" age cutoff. It is always recommended to check the specific lounge's "Conditions of Entry" on the Priority Pass or airline app before arriving, as some family-friendly lounges even offer separate play areas to keep younger travelers entertained during the wait.