Hello Everyone,
I'd value your advice with this query. I'm looking to book a dicounted CW ticket ex EU to LAX. My problem is that I may have to change my return date, but won't know this until I've commenced outbound travel. However, the change fee is a very hefty 350 euro

Would it be a better option to book a flexible WTP ticket and upgrade with miles? Would this give greater flexibility without such a high ticket change fee?
I've searched through previous threads about ability to change reservation after outbound travel completed but couldn't find anything that exactly matches my query.