Originally Posted by
writetorich
Thanks Tony!
But its a lap infant.
no seat was purchased.
Are you saying that its 10% of the miles instead of 10% of the full J class fare? Then this would certainly be an improvement over paying 10% cash of the FLOWN, Upgraded fare.
A lap infant on BA pays 10% of the adult fare regardless of class of travel. This is different to the policy for AA domestic flights where they're completely free.
I've never done this in two stages as you describe, but always bought & upgraded the tickets at the same time. The options we had were to pay 10% of the club class fare, or 10% of the WT+ fare, plus the 10% in miles, or 10% of the club class miles. It worked out about the same if you value the miles around 1.7p each IIRC.