British Airways\ flight change policy enables passengers to cancel their flights, but the regulations and fees for cancellations vary depending on the ticket\s fare class. Cancellation fees for flexible tickets are waived, whereas cancellation fees for standard and basic fares differ depending on the fare rules. Cancellations may be subject to time limits, and refunds may be available based on the fare rules. Passengers can cancel their flights either online or by calling the airline\s customer care department. If the ticket was purchased through a travel agent, the agent should be notified in the event of a cancellation.