general aviation City of Killeen Aviation System Killeen Regional Airport (GRK) GRK is the City of Killeen’s Commercial Aviation airport located on the west side of Killeen on SH 201. Learn More Skylark Field Airport (ILE) Skylark Field (ILE) is the City of Killeen’s General Aviation airport located on the east side of Killeen between Veterans Memorial Avenue/US Bus 190 and FM 2410. Learn More