STO City Code: Stockholm IATA Airports
STO identifies the city of Stockholm, Sweden, in IATA coding. Airport codes in this dataset for that city: ARN. A city code is not always the same as an airport code.
Overview
STO is the IATA city code stored for Stockholm, Sweden (SE). City codes group one or more airports. In this dataset STO is aligned with airport ARN. Some cities share the airport code; others (NYC, LON, TYO) do not. Airport names stored: ARN Stockholm Arlanda 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 STO or Stockholm 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 ARN as the airport. If a host screen shows city STO, confirm it matches this metro before quoting.
FAQs
What is the STO city code?
STO is stored as the IATA city code for Stockholm, Sweden.
Is STO an airport?
In this dataset STO is also used with airport ARN.
Which airports are in Stockholm?
Stored airports: ARN. Others are unavailable in this dataset.
How is STO used in a GDS?
City codes appear in some availability and pricing entries. Ticketed segments use a specific airport code.
Is STO the same as NYC-style metro codes?
Here STO matches a single stored airport. Metro codes such as NYC still differ from JFK.
What country is STO?
Sweden (SE).
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 STO airport pages?
Use the airport links for ARN.
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.