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Thread: IATA vs ICAO codes
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Old May 30, 2011 | 11:51 am
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KVS
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Originally Posted by Aviatrix
If you ignore the initial CY then some of the Canadian codes do make sense - OW is Ottawa, VR is Vancouver. (I don't know why Toronto is YZ or why Montreal is UL, though!)
Most likely, there are legacy reasons for the YZ code (e.g. there was originally a weather/railway station with such a code at that location).

Also, TO is, in fact, used for the Toronto IATA City Code (YTO).
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