Because Sihanoukville develops a lot in parts of trade, tourist industry and other aspects, the road to Phnom Penh needs to be constructed properly. The perfectly covered National Highway No 4 connecting the capital to this seaside resort is a fine way to go on. Travel Indochina
For those who are looking for a faster, more convenient way to travel between Sihanoukville and Phnom Penh, taking a mini-bus is highly recommended.
Foreigner popular bus company Giant Ibis has begun running from Phnom Penh to Sihanoukville road on 17-seat mini-buses. These are a important step up from the ordinary bus companies, and provide seat belts, extremely careful drivers, wireless throughout the buses that sometimes works and a large screen television that films English-language movies. The most interesting point is that they do not make a stop many times to drop off and pick up passengers and are always on time. It only stops once during the trip for snacks and toilet service and the whole journey takes 4 hours. It costs you $10 for one ticket that consists of hotel pickup. Cambodia travel tours
All travel agents and most guest houses offer Giant Ibis booking services, on their website or at their ticket offices. Taking these buses, you will be dropped off and picked up at the Giant Ibis office.
Mey Hong Transport
Even though being less tourist-oriented, Mey Hong shares many similarities with Giant Ibis. With comfortable Ford mini-buses fully equipped with air-conditions and seat belts, Mey Hong costs you $10 including hotel pickup. They are moderately faster than Giant Ibis and usually go on 3.5 to 4 hour trips, because they seem to drive a little bit more quickly. The only downside is that the office of Phnom Penh is situated in Toul Kork, not considerably outside the center of Phnom Penh. It is easy to travel from the station into town by taking a tuk tuk of a couple of bucks, but if you want to save money, walk away from the Mey Hong station to catch a tuk tuk on the street.
Mekong Express used to run an incapacitated group of old Japanese buses between Phnom Penh and Sihanoukville, and before Giant Ibis became more famous, they were the favorite choice of foreigners. They have eliminated the buses and are now running “VIP Vans” beautifully adorned with unique decals of prancing horses. They have a good safety condition and are well known for driving at reasonable speeds. They offer a two-tiered pricing policy which costs tourists and expats $12 and Khmers $10.
Golden Bayon Express
Departing at 8AM and 1:30PM to travel from Sihanoukville to Phnom Penh, bus of Golden Bayon Express costs you $10. It is better to book your tickets at least a day or two in advance thanks to booking services of most hotels, guesthouses and travel agencies.