Why Do Canadian Airport Codes Begin With The Letter Y?

For anyone whos flown, youll know that every airport has a unique three-letter code associated with it. From tickets to barcoded luggage tags to boarding passes, youll see these IATA-administered codes everywhere. A good portion of the worlds airports have airport codes that make sense in relation to their respective city or historical name. So why do Canadian airport codes begin with the letter Y? Lets find out.