My husband and I are taking our 2 year old son to Florida in May. We are flying with BA economy class. The flight duration is approximately 9 hours. We've purchaed my son a ticket so he has his own seat. I've read somewhere that BA allow car seats to be taken on to the plane as long as they are a certain dimension. Has anybody done this? I think our car seat may be too big, can anyone recommend a small but safe car seat for a 2 year old? We will use the car seat in the hire car on holiday. Many thanks x