Ho Chi Minh City to Singapore

Ho Chi Minh city airport named Tan Son Nhat International Airport (SGN) and near city center. It's about 8 Km from airport to District 1 and 15 Km to Phu My Hung Area, District 7. Passengers also can take taxi inside airport very easily with price is 12.000 VNĐ/Km.

Singapore Changi International Airport (SIN) or Changi Airport is a huge international aviation transport center and a important gate of general Asia and particular South-East Asian. According The Evaluation and Analysis of Skytrax, Changi Airport is one of three the Five stars airports in over the world. Changi Airport located at Airport Boulevard, Singapore with 20km distance from Singapore city center. There are 3 ways to transfer from Changi Airport to City Center: Airport Shuttle, Bus and Subway. 
Airport Shuttle provide bus from Changi Airport to hotels in Singapore city center, you can go to Ground Transport Desk to buy ticket in airport.
Bus: there is one bus with number 36 run from Changi Airport to Singapore city, depart at 06h AM till midnight. You lost 1 hour  to city by bus. There is other bus called Free Shuttle Bus for everyone, no luggage locker on this bus. Free Shuttle Bus operate from Bedok station, Sengkang station and Changi Bussiness Park.
Subway: You need go to station in West of Tanal Merah to reach Singapore City Center. The last train depart at 11h18 PM in Changi Airport to Tanal Merah.