<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by KVS:
Crampedin13A: "YTO would have made more sense than YYZ"
YTO is a code for a city while YYZ is a code for a specific airport. Many large cities worldwide have a city code (i.e. LON) and then many ariport codes all associated with the same city (i.e. LHR, LGW, etc.)
If YTO is used in the fare basis, it means that the basic fare (excluding taxes, fees, etc.) would, according to IATA rules, in theory, be exactly the same for flights in to/out of any Toronto (YTO) airport.</font>
I understand that but I'm just saying for the primary airport YTO could have been used and then Buttonville or the Island could have been YYZ and then use YTR or something similiar as the catch all in the fare calculations.