Home Slickdeals Houston to Singapore $635-$665 RT Airfares on ANA, Air Japan or United... Slickdeals Houston to Singapore $635-$665 RT Airfares on ANA, Air Japan or United Airlines (Travel Sept-Feb 2020) By ARCOM - 13 April 2019 156 0 SHARE Facebook Twitter Go to the deal page: Houston to Singapore $635-$665 RT Airfares on ANA, Air Japan or United Airlines (Travel Sept-Feb 2020)