My friend and I are planning to travel SE Asia next year for a month or two. I have just triggered my BA companion voucher and i have enough avios to fly us out F and return J (Lucky friend I know!). As we are only going for a relatively short period of time we are planning to fly to one airport (ie. Bangkok) and fly back from another (ie. Tokyo or Singapore). Or vice vera depending on availability. Is it possible to use the companion voucher to fly into one airport and out of another? Or must it be the same airport? I have had a look through the CV information and tried using the Avios booking tool on BA without luck. Not sure if I may have to call them to make the booking?