Looking at booking flights UK to Australia for DH and I. We weren’t sure if DSS (18) would want to come as it’s to see family. Mentioned it to DSS and he’s keen to come, and might stay for longer. We are only going for 2 weeks due to work commitments. We are ready to book now, DSS hasn’t worked out what he wants to do yet. AIBU to book DH and I business class flights now while they are still reasonably priced then DSS can travel in economy once he knows what he wants to do. Also we won’t be paying for his travel forever so want him to realise that!