rowanbell28 – https://www.flyinguidelines.com/changes/british-airways-changes-policy/

It’s quite easy to check the status of a British Airways aircraft PNR. All you need to do is go to the airline’s website and look for the “Manage My Booking” button. The ‘Find my booking’ option will be visible in the drop-down menu. Enter your last name and your booking reference number, often known as your PNR number, as directed. Your PNR code can be found on the ticket or on your e-ticket itinerary receipt whether or not you have made a reservation.

When you have successfully entered your last name and booking reference number, click “Find Booking” to view all of the information on your flight. If you are a British Airways Executive Club member, your booking references will be listed for you automatically.