Tianhe Park is the most popular place of interest in China. Many travelers make it a point to stop there while traveling to China. Other popular landmarks and places of interest in China would be Longmen Grottoes, NeuPuerta de Tian'anmen, or Guangzhou International Convention & Exhibition Center.
The closest airport to Tianhe Park is Aeropuerto Cantón, which is located in Cantón. If you plan on visiting or staying in this area, landing at Aeropuerto Cantón will be your best bet.
The best prices found on momondo for flights to China are:
$105 per person with China Eastern
$118 per person with China Southern
$161 per person with Asiana Airlines