Travel to and around the Angkor Archaeological Park is extensively covered in its own article. The following is a discussion of travel with Siem Reap.
By car
By car
Cars with drivers can be hired for single or multiple days. While all drivers are familiar with the area and happy to suggest good routes, most speak little English and are not actual tour guides. Licensed tour guides charge US$45-US$50 per day for a driver and English speaking guide. Drivers will likely ask for US$5-US$10 extra for trips to further temples such as the those of the Big Circuit, Banteay Srey and more for remote sites like Beng Mealea.
The taxis US$7 fixed cost from the airport to Siem Reap proper may provide a full day of touring for US$25-30.