Originally Posted by
TerryK
It is 10% of the cabin travelled. Yes, it could be over $1000 for first class.
You are better off redeeming an additional seat for the little one sometimes.
I think it's 10% of
ticketed class (I haven't done it, but did think about it). If you buy Y and upgrade to C, it's 10% of Y. If you buy C with cash or miles, it's 10% of C. In either case, I believe it's 10% of full fare, not the fare you paid.