Originally Posted by
cdb_london
Yes you can book the outbound and add the return later but you do not use the voucher on the first booking. I have just called to amend an existing one-way to add a return and use the voucher and it was fine. I booked LHR-YUL for 50k avios then added BOS-LHR for 2k avios. Taxes calculated as return + no change fee. Main limitation is that for open jaw must be in same zone.
Interesting - that's good to know. But to confuse the issue I booked LHR-SIN//CTU-LHR which is an open jaw in different zones, albeit I booked that in one go.