Originally Posted by djohannw

I wonder if the earning side on this idea would be optimal - from what I understand is that BA calculates Avios based on the fare paid, and I read that this is also true for flights on AA. With the 6 Avios per pound paid it would give me approximately 4500 Avios that way. If I would get Avios based on distance, however, it would be over 9500 Avios based on the booking-classes.

So venturing a bit into this I thought about earning the Avios into a Finnair Plus account (as they state that all non-Finnair flights are credited based on flown distance) and then transfer them to Executive Club 1:1 without a fee for redemption on BA as Finnair charges more Avios for the desired flight and has a substantially worse availability. Doing it that way we would get a free roundtrip to London each out of this single trip if my calculation is correct vs. a one-way each if credited directly to BA.