We’ve just managed to use two companion vouchers to fly out to KL and back from Singapore in club class in December which is great. However ideally we’d like the return leg to be a couple of days earlier. There’s not enough availability for us all to get those flights at the moment so we want to monitor it. My question is, is there any way to see flight availability anywhere? Companion vouchers have more availability but now that we’ve used them we can’t see them. Is it just a case of phoning up BA from time to time?