A flight change policy refers to the rules and guidelines set by an airline regarding the modification of a booked flight itinerary. It outlines the conditions under which passengers can make changes to their flight details such as date, time, or destination. The policy typically includes information about fees, restrictions, and eligibility for making changes. Each airline has its own specific flight change policy, which may vary in terms of flexibility, charges, and availability of alternative flights. It is important for travelers to familiarize themselves with the flight change policy of their chosen airline to understand their options and any potential costs involved in modifying their travel plans.