SIN City Code: Singapore IATA Airports
SIN identifies the city of Singapore, Singapore, in IATA coding. Airport codes in this dataset for that city: SIN. A city code is not always the same as an airport code.
Overview
SIN is the IATA city code stored for Singapore, Singapore (SG). City codes group one or more airports. In this dataset SIN is aligned with airport SIN. Some cities share the airport code; others (NYC, LON, TYO) do not. Airport names stored: SIN Singapore Changi Airport. GDS availability and some pricing entries use the city code when the traveller can use any airport in the metro. Ticketed segments still print a specific airport such as JFK rather than NYC. This page does not list every airfield in the metropolitan area, only rows in the catalog. Timezone and ICAO live on each airport page.
How to use this page
- Search SIN or Singapore in the city code finder.
- Open each airport page for ICAO and timezone.
- Parse the actual PNR to see which airport was ticketed.
Example
Example: a PNR city pair may use SIN as the airport. If a host screen shows city SIN, confirm it matches this metro before quoting.
FAQs
What is the SIN city code?
SIN is stored as the IATA city code for Singapore, Singapore.
Is SIN an airport?
In this dataset SIN is also used with airport SIN.
Which airports are in Singapore?
Stored airports: SIN. Others are unavailable in this dataset.
How is SIN used in a GDS?
City codes appear in some availability and pricing entries. Ticketed segments use a specific airport code.
Is SIN the same as NYC-style metro codes?
Here SIN matches a single stored airport. Metro codes such as NYC still differ from JFK.
What country is SIN?
Singapore (SG).
Can I convert a PNR that uses this city?
Yes. Paste the itinerary into the PNR parser. The ticketed airport codes on segments are what get parsed.
Are these all airports in the city?
No. Only airports present in this product dataset are listed.
How do I open SIN airport pages?
Use the airport links for SIN.
Where is the timezone?
On each airport page (IANA zone), not on the city code itself.
Do you invent missing city codes?
No. Unknown codes are marked unavailable.
When was this updated?
Content follows the stored city/airport catalog. Template date 17 Aug 2026.