Originally Posted by
drewaz
I tried this but got this message:
There is no availability on British Airways for the displayed date range. Your options are:
* Select an alternative date range
* Search availability on our partners
Then there isn't any miles availability. It doesn't matter whether it's an MFU, full redemption or part cash, part miles. It all comes from the same bucket.
Hiddy is quite right - there's no sense in which you can cancel the WTP->CW cash component (the ticket isn't priced like that anyway so it's meaningless) and replace it with miles. You'd have to cancel the ticket and start again. That may be possible as many tickets starting outside the UK are flexible for a small fee, but if there's a sale on now and not later you might not find yourself saving much money.
To be honest, if the price now is one you think is good I'd just buy the ticket and spend the miles another time.