Originally Posted by
rjhcambs
Is there not more than just the distance between city pairs. Different regions come into it as well, eg Buenos Aires and Santiago are close but in different regions .
This only comes into play when you are attempting to change an already issued 241 ticket. When booking, the open jaw return can be from a different zone providing the distance rule is satisfied. See the discussion and linked threads here:
http://www.flyertalk.com/forum/briti...-open-jaw.html