For Windows OS, some GDAL builds from Gisinternals are compiled with the KEA driver as well, see
http://www.gisinternals.com/packageinfo.php?file=release-1800-x64-gdal-2-1-0-mapserver-7-0-1.zip
UPDATE
The KEA driver needs a GDAL version 2.0 or later. The linked file works well with the gisinternals build of GDAL 2.1.0, and the resulting tif seems to be placed in the right spot:
gdalinfo reports: Driver: KEA/KEA Image Format (.kea).
Loading the file directly into QGIS 2.14.3, the HDF5 driver is used, but the result is misplaced in Ecuador. My QGIS version is not build with KEA driver support.
Unfortunately, the ubuntugis unstable build of GDAL 2.1.0 does NOT (yet) include the KEA driver. So you have to compile GDAL yourself to get the KEA support for Linux systems. For furher support on that, see https://bitbucket.org/chchrsc/kealib/wiki/Building%20KEA%20on%20Ubuntu
You will definitely run into further problems, see http://askubuntu.com/questions/702145/c-header-files-for-hdf5-are-missinghttps://askubuntu.com/questions/702145/c-header-files-for-hdf5-are-missing
Copying missing files to the expected folder, or adding folders to search paths will clear the situation, and finally I got Ubuntu Xenial to run GDAL 2.1.0 with the KEA driver:
gdalinfo --formats | grep KEA
KEA -raster- (rw+): KEA Image Format (.kea)
gdal_translate now creates the same output under Ubuntu as the Windows build does.
