---
title: "SYD is which airport? Sydney"
description: "SYD is Sydney Kingsford Smith Airport in Sydney, Australia. Why the code is SYD and not something you could guess, plus the codes it gets mixed up with."
url: https://atoneplace.net/airport/syd/
site: "At One Place"
---

# What airport is SYD?

**SYD is: Sydney Kingsford Smith Airport**

Sydney, Australia

## Why the code is SYD

SYDney.

The airport authority or a contemporaneous record states this directly.

## The airport

- **IATA code:** SYD
- **ICAO code:** YSSY
- **Airport:** Sydney Kingsford Smith Airport
- **City:** Sydney, Australia
- **Opened:** 1920
- **Code origin:** Documented

Australian ICAO codes begin with Y, which has nothing to do with Canada's Y prefix and is pure coincidence of the ICAO allocation. Sydney has a legally mandated curfew between 11 p.m. and 6 a.m., which shapes the timing of every long-haul flight into Australia.

## The other code, YSSY

Every airport has two codes. The three-letter IATA code, SYD, is the one on your boarding pass and your luggage tag, and it is assigned for commercial use. The four-letter ICAO code, YSSY, is the one pilots and controllers use, and it is assigned geographically: the first letter or two identify the region, so every airport in the same part of the world shares a prefix. That is why YSSY looks nothing like SYD.

## Common questions

### What airport is SYD?

Sydney Kingsford Smith Airport, in Sydney, Australia.

### Why is Sydney's airport called SYD?

SYDney.

### What is the difference between SYD and YSSY?

SYD is the IATA code, used commercially — tickets, timetables, luggage tags. YSSY is the ICAO code, used operationally by pilots and air traffic control, and assigned geographically by region.

## Related pages

- [Australia](https://atoneplace.net/country/australia/)
- [The flag of Australia](https://atoneplace.net/flag/australia/)
- [Airport codes in Australia](https://atoneplace.net/airport/in/australia/)
- [What airport is MEL?](https://atoneplace.net/airport/mel/)

## Sources

- OurAirports — OurAirports (https://ourairports.com/data/) [Public domain]