Stansted airport code: STN and EGSS
London Stansted uses STN for passenger-facing airport identification and EGSS as its ICAO identifier. Both identify the same airport; neither is the code for every London airport.

Two identifiers, one airport
| Identifier | Stansted | Where you encounter it |
|---|---|---|
| IATA | STN | Bookings, baggage labels and flight searches |
| ICAO | EGSS | Aeronautical airport identification |
The identifiers come from the OurAirports airport data used by our lookup. EUROCONTROL’s airport-capacity note also identifies London Stansted as EGSS (STN). Its historical capacity figures are not presented here as current passenger statistics.
Stansted is not Heathrow or Gatwick
London is served by several airports. LHR identifies Heathrow, while LGW identifies Gatwick. Read the airport name as well as the city when checking a booking. A London airport label does not make terminals at different airports interchangeable.
For the current terminal story, the airport’s official facts page dates the terminal opening to 1991 and describes its transformation programme. Live transport and airline information belongs with the operator; a code reference is not a timetable.
Another kind of airport code
An aerodrome reference code, such as a number and letter, describes a design classification. It is not another spelling of STN or EGSS. Our airport-code explanation separates identifiers, and the lookup lets you compare airports.
If you are researching where to watch aircraft, read the Stansted spotting guide separately: knowing the identifier does not establish access to airport land.