I guess it doesn't always work, but at least for North American flights for the 2 I've tried (SAN-YUL, SAN-YYC) it seems to be true... maybe a US conversion rate factor on transborder flights?
Originally Posted by
djjaguar64
Not quite true,
YYZ-NRT OW = about 500 plus taxes
NRT-YYZ OW = about 4400 plus taxes
The RT is about 1500, taxes in.