Originally Posted by lcylocal

Firstly I would check if you can change for free online. I doubt it given the 241 involved etc. but worth checking in Manage My Booking.

Advantage of doing it now is that if you have status or want to pay for seat selection you will likely have a wider choice, moving now than in a few weeks.

Advantage of waiting is that it’s a one time change. Also your current flight could easily switch back to BA operated.