Using AA miles LHR>YYZ>SFO in F, could I go on a direct flight if there's room?
I am using AA miles in First for LHR>YYZ>ORD>SFO.
There is a BA LHR>SFO direct flight leaving around the same time. If there is room in F (or CW), would they allow me to go on it? Am wondering if there was room if they will hold to the rule of not using AA miles from the UK to US.
Thanks.