Why can’t I change my BA flight online

If you’re unable to change your BA (British Airways) flight online, it could be due to various reasons. Possible explanations include technical issues with the website, restrictions based on the fare type or booking class, or specific booking conditions that require assistance from a customer service representative. Additionally, certain changes may not be permitted online, depending on the complexity of the request. For prompt assistance, you can contact +1 (888) 660-0053 to speak with a BA representative who will guide you through the necessary changes and provide personalized support for your flight modification needs.

Source: https://airlinesbookingagent.com/change-flight/why-cant-i-change-my-ba-flight-online