Find an airport’s elevation on charts or in your simulator, then use it correctly for altimeter checks, circuit altitude and performance planning.
An airport’s elevation is published on its official aerodrome chart and airport directory, usually in feet above mean sea level. In Aviation & Real-World Flying, it matters because it sets the reference for altimeter checks, traffic-pattern altitudes, terrain clearance and density-altitude calculations that directly affect take-off and landing performance.
Where can I find an airport’s elevation?
The best source is the current official aerodrome data for that airport; simulator information is useful for virtual flying but must not replace official data in real-world operations.
- Check the aerodrome or airport chart. Look for a value labelled
ELEV,AD ELEVor field elevation, usually near the airport identification or chart header. Confirm whether the units are feet or metres and whether the datum is mean sea level. - Use the national airport directory or AIP entry. Search with the airport’s ICAO identifier to avoid selecting another airport with a similar name. Our overview of ways to obtain the correct airport chart explains the practical options for simmers.
- Inspect the simulator’s airport information. The world map, flight planner, GPS or FMS airport-information page will usually show elevation. Treat this as simulator data: its navigation database and installed scenery may represent different revisions.
A METAR normally provides pressure and weather rather than the airport’s published elevation. With the correct local QNH selected, however, an altimeter on the ground should indicate reasonably close to the known elevation. Our QNH and altimeter-setting explanation covers this check and the common inHg-versus-hPa mistake.
Is airport elevation the same as runway elevation?
No. Airport elevation is a published reference for the aerodrome, commonly based on the highest point of the landing area or usable runways under the relevant authority’s definition.
| Term | What it means |
|---|---|
| Airport or aerodrome elevation | The published field reference above mean sea level. |
| Threshold elevation | The elevation at one runway threshold; the opposite end may differ because of runway slope. |
| Touchdown zone elevation | A runway-specific value used on some instrument approach charts, not the general field elevation. |
| Height AGL | Vertical distance above the local ground, rather than altitude above mean sea level. |
This distinction explains why an aircraft parked near a low runway threshold may not indicate the exact published airport elevation even with QNH set correctly.
Why does airport elevation matter when flying?
Airport elevation affects altitude interpretation, circuit planning and aircraft performance before the aircraft even leaves the runway.
- Altimeter checks: a large unexplained difference between indicated altitude and known ground elevation can reveal an incorrect pressure setting, wrong pressure units or an instrument problem.
- Circuit and traffic-pattern altitude: a circuit height stated in feet AGL must be added to field elevation to obtain the corresponding altitude MSL.
- Take-off and landing performance: higher airports generally have lower air density, reducing engine, propeller, wing and rotor performance. High temperature makes the effect worse.
- Approach and terrain awareness: charted altitudes are commonly referenced to mean sea level, while obstacle clearance and visual height above the airport depend on the difference between altitude and local elevation.
How do I convert circuit height to indicated altitude?
If a circuit is specified as a height above the aerodrome, add that height to the field elevation. For example, a 1,000-foot circuit above an airport at 2,350 feet gives a target altitude of 3,350 feet MSL on QNH.
Use the published circuit or traffic-pattern altitude when one is provided; do not assume every airport uses 1,000 feet AGL. We explain the full procedure in our simulator traffic-pattern guide.
Does a high airport always require a longer runway?
Higher elevation usually increases take-off distance and true landing speed for a given indicated airspeed, but runway requirement also depends on temperature, pressure, wind, slope, surface, aircraft weight and configuration. Field elevation alone is not a performance calculation; use the aircraft’s approved performance data and actual conditions. Our explanation of how elevation changes take-off and landing performance covers those effects in detail.
What if the simulator shows the wrong airport elevation?
First establish whether the discrepancy comes from the altimeter, the navigation database or the scenery itself.
- Set the correct QNH and verify whether the instrument expects hPa or inHg. An altimeter left on standard pressure is not expected to show field elevation accurately on the ground.
- Check your position. A sloping runway, apron or threshold can sit above or below the published field reference.
- Compare the chart with the simulator’s airport-information page. A small difference may be caused by rounding or different data revisions.
- Temporarily disable conflicting scenery. Duplicate airport packages, terrain mesh and elevation corrections can produce sunken runways, plateaus or incorrect ground height.
For real flying, resolve discrepancies with current official aeronautical information rather than using the simulator’s displayed value.