Originally Posted by
c.l.i.a
It used to depend on where your ticket is issued (market) many years ago but I am not sure if this is still the case nowadays.
M.B.P. (Market-Based Pricing)
As recently as yesterday, I priced a round-trip ticket from the USA to deep South America. Fair from the US and back was $3,300. Change the routing from South America to the US and back, and that fare drops to $1,300