Airport code
ASI — RAF Ascension Island
ASI is the IATA code for RAF Ascension Island, an airport serving Cat Hill, Saint Helena. Its ICAO code is FHAW, and it operates in the Atlantic/St_Helena time zone (UTC+0). The airport sits at -7.9696, -14.3937 in the Southern Hemisphere, at an elevation of 278 ft (85 m).
Overview
About RAF Ascension Island
RAF Ascension Island, also known as Wideawake Airfield or Ascension Island Auxiliary Field, is a military airfield and facility located on Ascension Island in the Atlantic Ocean. The airfield is jointly operated by the Royal Air Force (RAF) and the United States Space Force (USSF). Under the terms of an international agreement between the UK and US governments, only state aircraft are authorised to land at Ascension, with the sole exception being civil aviation between Ascension and Saint Helena.
Reference data
Airport information
| IATA code | ASI |
|---|---|
| ICAO code | FHAW |
| Airport name | RAF Ascension Island |
| City | Cat Hill |
| Country | Saint Helena |
| Time zone | Atlantic/St_Helena (UTC+0) |
| Latitude | -7.9696 |
| Longitude | -14.3937 |
| Elevation | 278 ft (85 m) |
| Airport type | Medium airport |
| Continent | Africa |
| Runways | 1 |
| Longest runway | 10,019 ft (3,054 m) |
| Map | View on OpenStreetMap ↗ |
Reference data last updated 24 July 2026.
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Questions
Frequently asked questions
What is the IATA code for RAF Ascension Island?
The IATA code for RAF Ascension Island is ASI.
What is the ICAO code for RAF Ascension Island?
The ICAO code for RAF Ascension Island is FHAW.
Where is ASI airport located?
RAF Ascension Island (ASI) is located in Cat Hill, Saint Helena.
What time zone is ASI in?
RAF Ascension Island operates in the Atlantic/St_Helena time zone, which is UTC+0.
What is the nearest airport to ASI?
The nearest airport to RAF Ascension Island (ASI) is St. Helena Airport (HLE) in Jamestown, about 1,301 km away.