Great question - TAC to SYD just means Tacloban City D.Z. Romualdez Airport to Sydney Kingsford Smith Airport. Now you’ll know what these unique codes when you look for flights! Melbourne Airport (MEL), Brisbane Airport (BNE), Perth Airport (PER), Adelaide Airport (ADL), Coolangatta Gold Coast Airport (OOL) are some additional IATA codes for airports related to your trip. Find deals