Originally Posted by
skba1
As per above response I have through experience learnt that it is best to book all Avios redemption as one-ways. It allows for pretty much full flex up to 24hrs before departure and can be cancelled online..
Although doing this can result in paying higher fees. For an ex UK return to the States you pay around £70+ more if split onto two one-ways because there are higher carrier charges on ex USA bookings, therefore your one way return journey would be ex-us and charged more.
No idea if charges are different in the points of origin in the OP's case however.