Originally Posted by
Anonba
You can buy extra baggage in advance through BA if all flights in that leg of your journey are operated by BA only.
You will be able to add baggage but it will only be possible at the airport.
Thank you - I wish I had known that before I booked the flight. It is most inconvenient, and I will bare this in mind for next time. The BA-Iberia combination was the option on that day that didn't involve a really long layover in Madrid.