Hope I explain this OK - next year me & my better half are travelling to US for 10 days for silver wedding before our son joins us for another 10 days. Looking at best prices for directs to cross the pond we're thinking of flying IcelandAir via Reykjavic from LHR to Boston out and return via JFK.
Son is flying alone and has never flown before, so not keen for his outward leg to be via Icelandair as he will have to transfer in reykjavic and being a dreamer would probably miss his flight!
However to buy a single direct to Denver(BA) where we will be when he arrives (staying with relatives) and then a single back with us on IcelandAir is extortionate.
My question is, having looked at prices, it is far cheaper to buy him a return direct to denver and then a single back with us. What would the implications be if he didn't use the return portion of his BA ticket, provided i booked it for a few days after we actually travel back? - I'm assuming that immigration would take a dim view of him travelling into the states on a single ticket, especially when he's staying with relatives?