The majority of visitors to Siem Reap arrive by air from Phnom Penh and Bangkok. There are also regular flights from Singapore, Ho Chi Minh City and Vientiane. Visas are available on arrival at the Siem Reap and Phnom Penh airports. From Phnom Penh, there are also daily boats and buses/vans going to Siem Reap. Some visitors make their way to Siem Reap overland from Thailand via the Aranyaprathet/Poipet border crossing.

Siem Reap Arrival and Departure
Airport Departure and Arrival Tax: Domestic: US$6. International: US$25 Siem Reap Airport: The airport sits 6km from town, close to the temples, occasionally affording spectacular views of Angkor Wat during landings and take offs. Outside the terminal is a ticket booth for registered taxis into town. Independent taxis and motorcycles wait just outside the airport. The price is the same for both: motorcycles are $2 and cars are $6-7 into town. Most hotels offer free transportation from the airport but you must notify them in advance of your arrival.

Siem Reap Ferry Dock
The ferry to Siem Reap arrives at Chong Khneas near Phnom Krom, 12km south of Siem Reap. The ticket price costs from 35us$. There is always transportation waiting at the dock. Mototaxis charge about $2-$3 and cars $6-$7 for the 20-30 minute ride into town.

Airs
Cambodia Angkor Airways offer several daily flights to/from Phnom Penh, another cheap opportunity is Bassaca Air or Bayon Airlines. Vietnam Airline also offer daily flight to/from Ho Chi Minh city and Hanoi, Singapore Airlines to/from Singapore and Loas Airlines to/from Luang Prabang. You can make your flight booking throught http://www.tourismcambodia.com/flights/.
River Ferry
Daily ferries ply the Tonle Sap river and lake between Phnom Penh and Siem Reap. The end of the trip is marked by a hill, Phnom Krom, near the ferry dock at Chong Khneas 12 km south of Siem Reap. During the dry season, the ferry stops short of the dock and passengers transfer to smaller boats to traverse the final few hundred meters.

Ferries depart 7am daily from the Phnom Penh Port on Sisowath Quay. Ferries depart Siem Reap daily at 7am from the dock at Chong Khneas. Passage is around $18-$25 and should be purchased a day in advance (251km, 4-6 hours). Drinks are sometimes available. Tickets can be purchased through hotels and travel agencies cheaper than at the ferry offices. Though generally safe, these ferries are local transport and have experienced breakdowns, groundings and other difficulties. Travel is best during the wet season (June-November). Dry season low waters can mean smaller, less comfortable boats and occasional groundings.

Compagnie Fluevial Du Mekong offers very leisurely paced boat trips between Phnom Penh and Siem Reap on a traditionally crafted wooden riverboat with deluxe facilities. 3-day excursions. Tel: 023-216070;
Tourists can make a Ferry/boat booking by online with fast and safe pay.

Buses or Vans
There are many Bus companies like Giant Ibis, Mekong Express, PSD Xpress, Sorya Bus, Neak Krohorm, Thero Express (15-seat), Larryta, KSO, Virak Buntham, Kampot Express, Cambodia Post VIP Van offering bus/van services to Siem Reap town using modern air-conditioned buses/vans. Buses/vans depart every 15 minutes to one hour, daily from 6am-12pm mid night. The prices are reasonable. Online Bus ticket can be purchased in advance.

Share/Private Taxis
Local share taxi depart from southwest corner of Central Market in Phnom Penh for 25,000 riel per person (5-8 hours). A private taxi costs you US$38-$45 for the whole car. 5-6 hours. (Due to rising fuel costs, prices are in flux.). Private taxi is also available in Siem Reap, and you can check with any travel agents or hotels to arrange for you. Now very easy, you can book Private Taxi before your arrival through online.

Motorbike Info to Siem Reap
The road to Siem Reap is in good condition, but driving in Cambodia is still challenging in the extreme, and should be attempted only by experienced riders. Speeding taxis, slow cows, and oblivious children are the norm. The trip calls for a dirt or road bike, no smaller than 250cc. It can be made in a day, but two days with a layover in Kampong Thom is a more relaxed alternative and allows time to visit the pre-Angkorian ruins of Sambor Prei Kuk.

Leave Phnom Penh via the Japanese Bridge and follow National Highway No 6 north 75km to the Skun intersection. (Skun is known for its exotic foods – check out the fried spiders, turtle eggs and more at the roadside stands.) Bear left and follow the NH No 6 to Kampong Thom – about 2-3 hours. In Kampong Thom, the Arunras Hotel (062-961294), Stung Sen Royal Hotel (012-309495) and Mitttapheap Hotel are all decent mid-range places. Arunras Guesthouses and Restaurant next to the hotel is the place to eat cheaply. From Kampong Thom to Siem Reap the trip takes another 2-3 hours.