Cambodia has a comprehensive bus network, and bus travel is cheap and generally of a good standard. It's also usually the safest cross-country transportation, aside from flying. Travel from neighboring countries is easy, reliable, and cheap. Buses from Thailand and Vietnam operate daily.
Giant Ibis. 3E0 St. 106, Khan Doun Penh, Phnom Penh, Phnom Penh, 12202. 023/987808; 023/999333; www.giantibis.com.
GST Express Bus. 13 St. 142, Phnom Penh, Phnom Penh, 12209. 023/218114; 012/895550.
Hua Lian. St. 182 and Monireth Blvd., west of Buddha Pagoda, near Olympic Stadium, Phnom Penh, Phnom Penh, 12253. 012/376807.
Mekong Express. 103 Eo, Sisowath Quay, Phnom Penh, Phnom Penh. 012/787839; 070/833399; catmekongexpress.com.
Neak Krorhorm Travel. 4 St. 108, next to old market, Phnom Penh, Phnom Penh, 12202. 098/219496; 012/495249.