Originally Posted by
donotblink
I can't speak for British Airways, which is what I think the original question was about, but in terms of American Airlines crediting AA coded flights to my account, ticketed as part of an around the world ticket, I've had some really bizarre earnings, I've had some super short flights that credit a lot of miles, and some longer flights that barely credit any miles. Most of them were posted as utilizing the fare and not distance.
But if it's not consistent amongst all OW airlines, then don't you end up with the potential scenarios that either you are getting benefits or disadvantages on less than (or more than) 100% of what you book? Is that expected? It seems strange to me - my natural assumption is that the airlines all agree, that if you need to make a calculation for a flight that you are responsible for, this is the basis. This could apply to YQ / YR, crediting Avios, or loyalty scheme points, or any other metric.
EDIT: so a straight-line basis (i.e. ticket cost divided by flights) or a weighted basis (segment mileage divided by total mileage multiplied by ticket cost) would both be options, and would be consistent for all OW airlines