offers the facility of make amendment to their booked flight ticket for free. To avoid any kind of fee or penalty passengers will have to follow this 24 hours policy. British Airways provide good services and this airline will help their passengers in every situation. You can also do the process of change flights online and offline.
https://airlinespolicy.com/flight-change-policy/british-airways-change-flight-policy/
https://airlinespolicy.com/flight-change-policy/british-airways-change-flight-policy/