See Angkor and Die ...

How to get there?

By Air

There are direct flights to Phnom Penh from several main cities in Asia
such as Bangkok (Thai Airways and Bangkok Airways), Ho Chi Minh City and Hanoi (Vietnam Airlines), Kuala Lumpur (Malaysia Airlines), Singapore (Silk Air and Singapore Airlines), Hong Kong (Dragonair), Vientiane (Laos Aviation), and Guangzhou (China Southern Airlines)

You can also fly to Siem Reap from Bangkok (Bangkok Airways), Singapore (Singapore Airlines and Silk Air)

Land crossing

From Thailand, you can enter Cambodia by crossing Aranya Prathet-Poipet border or Trat-Koh Kong border.

Northeastern Bus Terminal (Mochit) offers bus service from Bangkok to Aranya Prathet. To go to Trat, you may take a bus at Eastern Bus Terminal (Ekkamai) in Bangkok. Upon arrival at Trat Bus Terminal, you can take a minibus or van to Hat Lek border for entering Cambodia. For more information about the bus service, please call 0 2936 2852-66 (Northeastern Bus Terminal) or 0-2391-8097 (Eastern Bus Terminal)

You can also enter Cambodia from Vietnam by crossing Moc Bai-Bavet border.