Im in HK now, no checked bags, and it was a fairly cheap economy booking, not plus, and got some taxes etc. back.

I guess what my question really is, can one book an avios ticket onthe day on landing, and probability of avios tickets available on landing? I have had late fligts in on QR but also early ones, if this flight would be ay 30min early in I could try to get on the BA one around 7am, there is one around 10-ish. The conondrum here is as it stands there are only buss tickets left for avios on those two. That is fine, I would aim to book the one around 10-ish, but if one is early I would like the 7am one...and if one gets silly late, I rather wouldnt have booked any of them...

I am leaning towards booking the 10-ish one and hope there will be no severe delays.