Plenty of airports worldwide continue to use old airport IATA codes long after the airport changes name (e.g., BOM for Bombay, now Mumbai in India). These codes even apply to some important ...

"Canadian airports are not the only ones with IATA codes that don't match the name," he adds. "Chicago's O'Hare airport, the fifth-busiest in the world, has the designation ORD.

Two people who love airport codes help Peter O'Dowd unlock some of the stories and mysteries behind them. Skip to main content. ... Ottawa YOW. Fly into YYZ and you'll end up in Toronto.