By AIR
Cambodia can be accessed through the Phnom Penh International Airport and the Siem Reap International Airport; both of which provide full services for passengers on international flights operated by many international airlines. Many international airlines are listed below:

International Airlines

1.Cambodia Angkor Air (K6): Phnom Penh-Ho Chi Minh- Phnom Penh, Siem Reap-Ho Chi Minh-Siem Reap, Phnom Penh-Siem Reap-Phnom Penh
2.Air Asia (AK): Kuala Lumpur-Phnom Penh-Kuala Lumpur, Bangkok-Phnom Penh-Bangkok, Kuala Lumpur-Siem Reap-Kuala Lumpur
3.Asiana Airlines (OZ): Incheon-Phnom Penh-Incheon, Incheon-Siem Reap-Incheon
4.Bangkok Airways (PG): Bangkok-Phnom Penh- Bangkok, Bangkok-Siem Reap-Bangkok
5.China Airlines (CI): Taipei-Phnom Penh-Taipei
6.China Eastern Airlines “China Yunnan Airlines + China Northwest Airlines” (MU): Kunming-Siem Reap-Kunming, Yunnan-Siem Reap-Yunnan
7.China Southern Airlines (CZ): Beijing-Phnom Penh- Beijing, Guangzhou-Phnom Penh-Guangzhou
8.Dragon Air (KA): Hong Kong-Phnom Penh-Hong Kong
9.EVA Air (BR): Taipei-Phnom Penh-Taipei
10.Far Eastern Air Transport (EF):  TPE-PNH-TPE (for a cargo flight)
11.JetStar Asia (3K): Singapore-Phnom Penh-Singapore, Singapore-Siem Reap-Singapore
12.Korean Air (KE): Seoul-Phnom Penh-Seoul, Seoul-Siem Reap-Seoul
13.Lao Aviation (QV): Vientiane-Siem Reap-Vientiane
14.Malaysia Airlines (MH): Kuala Lumpur-Phnom Penh- Kuala Lumpur, Kuala Lumpur-Siem Reap-Kuala Lumpur
15.Shanghai Airlines (FM): Shanghai-Phnom Penh- Shanghai
16.Siem Reap Airways International (FT): Bangkok-Siem Reap-Bangkok
17.Silk Air (MI): Singapore-Phnom Penh-Singapore, Singapore-Siem Reap-Singapore
18.Thai Air Asia (FD): Bangkok-Phnom Penh-Bangkok
19.Thai Airways International (TG): Bangkok-Phnom Penh- Bangkok
20.Vietnam Airlines (VN): Hanoi-Phnom Penh-Hanoi, Ho Chi Minh-Phnom Penh-Ho Chi Minh, Vientiane-Phnom Penh-Vientiane, Hanoi-Siem Reap-Hanoi, Ho Chi Minh- Siem Reap-Ho Chi Minh

Airport Tax: The Cambodian government has announced plans to change the airport departure tax system. From April 1st 2011, departure tax will now be included in all ticket prices. This is a welcome move and should facilitate smoother travel.

By LAND
Tourists can enjoy traveling to Cambodia by land from neighboring Vietnam, Laos and Thailand.
Access from Vietnam (through nine international border checkpoints)1.Bavet (Cambodian side) and Mok Bai (Vietnamese side) On the Cambodian side, the Bavet international border checkpoint is located in Svay Rieng Province, and on the Vietnamese side, the Mok Bai international border checkpoint is located in Tay Ninh Province.
Tourists can reach Cambodia from Vietnam through the gates. Visas on arrival and e-visas are available there. They can get access to Phnom Penh by National Road No 1. The distance between Ho Chi Minh City and Phnom Penh City is 230 kilometers. There are taxis at the border between two countries. The taxi fare to Phnom Penh City is approximately US$ 10 per person. On their journey, visitors can enjoy the beautiful landscape of the eastern Mekong area.

2.Kaam Samnor (Cambodian side) and Yin Soeung (Vietnamese side) On the Cambodian side, the Kaam Samnor international border checkpoint is located between Kandal and Prey Veng Provinces, and on the Vietnamese side, the Yin Soeung international border checkpoint is located in Ang Giang Province. From Vietnam, tourists can get access to Cambodia through the gates. Visas on arrival are available there.

3.Phnom Den (Cambodian side) and Tin Bienh (Vietnamese side) On the Cambodian side, the Phnom Den international border checkpoint is located in Takeo Province, and on the Vietnamese side, the Tin Bienh international border checkpoint is located in Ang Giang Province. Tourists can get access to Cambodia from Vietnam through the gates. Visas on arrival are available there.

4.Trapaing Phlong (Cambodian side) and Xamat (Vietnamese side) On the Cambodian side, the Trapaing Phlong international border checkpoint is located in Kampong Cham Province, and on the Vietnamese side, the Xamat international border checkpoint is located in Tay Ninh Province. Tourists can get access to Cambodia from Vietnam through the gates. Visas on arrival are available there.

5.Trapaing Srè (Cambodian side) and Bonue (Vietnamese side) On the Cambodian side, the Trapaing Srè international border checkpoint is located in Kratie Province, and on the Vietnamese side, the Bonue international border checkpoint is located in Binh Phuoc Province. Tourists can get access to Cambodia from Vietnam through the gates. Visas on arrival are available there.

6.Oyadav (Cambodian side) and Lethanh (Vietnamese side) On the Cambodian side, the Oyadav international border checkpoint is located in Rattanak Kiri Province, and on the Vietnamese side, the Lethanh international border checkpoint is located in Gia Lai Province. Tourists can get access to Cambodia from Vietnam through the gates. Visas on arrival are available there.

7.Banteay Chakrei (Cambodian side) and Dinh Ba (Vietnamese side) On the Cambodian side, the Banteay Chakrei international border checkpoint is located in Prey Vèng Province, and on the Vietnamese side, the Dinh Ba international border checkpoint is located in Dong Thap Province. Tourists can get access to Cambodia from Vietnam through the gates. Visas on arrival are available there.

8.Preak Chak (Cambodian side) and Ha Tieng (Vietnamese side) On the Cambodian side, the Preak Chak international border checkpoint is located in Kampot Province, and on the Vietnamese side, the Ha Tieng international border checkpoint is located in Kien Giang Province. Tourists can get access to Cambodia from Vietnam through the gates. Visas on arrival are available there.

9.Samrong (Cambodian side) and Mi Quy Tei (Vietnamese side) On the Cambodian side, the Samrong international border checkpoint is located in Svay Rieng Province, and on the Vietnamese side, the Mi Quy Tei international border checkpoint is located in Long An Province. Tourists can get access to Cambodia from Vietnam through the gates. Visas on arrival are available there.

 Access from Laos

On the Cambodian side, the Trapaing Kreal international border checkpoint is located in Stung Trèng Province, and on the Lao side, the Norg Nokbiane international border checkpoint is located in Champasak Province. Cambodia can be accessed from Laos through the gates. Visas on arrival are available there.

Access from Thailand (through six international border checkpoints)

1.Poipet (Cambodian side) and Ban Klong Leuk (Thai side) On the Cambodian side, the Poipet international border checkpoint is located in Banteay Meanchey Province, and on the Thai side, the Ban Klong Leuk international border checkpoint is located in Sakeo Province.

Through the gates, tourists can reach Siem Reap, Cambodia from Thailand to visit the Angkor complex. Visas on arrival and e-visas are available there. Its fee is US$ 20 for each tourist and is US$ 25 for each businessman. It takes about 5 hours from the border to the Siem Reap town by National Road No 6 by taxi. A taxi driver charges US$ 15 for each passenger.

2.Cham Yeam (Cambodian side) and Hat Lek (Thai side)Visitors can reach Cambodia from Trat Province, Thailand through the Cham Yeam international border checkpoint located in Koh Kong Province. From Koh Kong Province, they can continue traveling to Preah Sihanouk Province. It takes around 4 hours to reach Preah Sihanouk Province by speedboat. A one-way taxi fare between Koh Kong Province and Preah Sihanouk Province is US$15 and from there, tourists can proceed to the capital of Phnom Penh by National Road No 4. The distance between Preah Sihanouk Province and Phnom Penh Capital is 230 kilometers. It takes 3 hours and a half by taxi or by bus. The taxi fare is around US$ 10 per capita, and the bus fare is between US$ 3-4. Visas on arrival and e-visas are available at the border gates, and entry visas into Cambodia can also be granted at the Royal Cambodian Embassy in Bangkok or in other cities of Thailand.

3.O'smach (Cambodian side) and Chong Chorm (Thai side) On the Cambodian side, the Osmach international border checkpoint is located in Oddar Meanchey Province, and on the Thai side, the Chong Chorm international border checkpoint is located in Sorin Province. Tourists can get access to Cambodia through the gates. Visas on arrival are available there.

4.Choam (Cambodian side) and Sangam (Thai side) On the Cambodian side, the Choam international border checkpoint is located in Oddar Meanchey Province, and on the Thai side, the Sangam international border checkpoint is located in Sysaket Province. Tourists can get access to Cambodia through the gates. Visas on arrival are available there.

5.Prom (Cambodian side) and Ban Pakard (Thai side) On the Cambodian side, the Prom international border checkpoint is located in Pailin Province, and on the Thai side, the Ban Pakard international border checkpoint is located in Chanthaburi Province. Tourists can get access to Cambodia through the gates. Visas on arrival are available there.

6.Dong (Cambodian side) and Ban Lem (Thai side) On the Cambodian side, the Dong international border checkpoint is located in Battambang Province, and on the Thai side, the Ban Lem international border checkpoint is located in Chanthaburi Province. Tourists can get access to Cambodia through the gates. Visas on arrival are available there.

 By WATER
Cambodia can be reached by boat from neighboring countries and the world. The Sihanouk International Seaport and the Phnom Penh International Port are two main gateways to Cambodia. Visas upon arrival are available at the Phnom Penh International Port, but they are not available at the Sihanouk International Seaport.
The Sihanouk International Seaport receives international cruise ships that accommodate hundreds of visitors.
It is possible to reach Phnom Penh Capital by ship along the Mékong River from Vietnam. Phnom Penh is connected by fast local boats to the Upper Mekong River close to Laos or it is linked along the Tonlé Sap to Siem Reap-Angkor. By this means, visitors can enjoy the Mekong’s view and discover the new growth area of Cambodia full of natural resources, cultural heritage, and life styles of the Cambodian people.

VISA To Cambodia
All nationalities need to apply for a travel visa, except for nationals from the following countries: Indonesia, Laos, Malaysia, Myanmar, the Philippines, Singapore, Thailand and Vietnam.
A visa on arrival, valid for a thirty-day stay, is specifically granted at Phnom Penh International Airport, Siem Reap International Airport, and International Border Checkpoints. Visas are also granted at Royal Cambodian Embassy or Consulate abroad. The visa fee for a tourist is US$20, and the visa fee for a businessman is US$25. Visas can be extended at the Immigration Department in Phnom Penh City. A free visa (K) is expressly granted to the Cambodian living overseas.
The Royal Government of Cambodia has recently approved e-visas. All you have to do is complete the online application form available at the official website (evisa.mfaic.gov.kh), pay by credit card online, and include uploading a recent passport-size photo in JPEG/ PNG format. The visa will be approved within three business days, allowing you to breeze by that lengthy line and get a jump-start on your holiday.
The e-visa, valid for a thirty-day stay, is available only for a typical tourist visa for a single entry. It is currently not available for nationals from Iran, Iraq, Pakistan, Afghanistan, Bangladesh, Arab Saudi, Algeria, Sudan, and Sri Lanka. For a business visa, please apply at your nearest embassy or on arrival at all major check points.
Tourists getting such a visa online can enter and exit Cambodia through Phnom Penh International Airport, Siem Reap International Airport, Bavet International Border Checkpoint in Svay Rieng, Cham Yeam International Border Checkpoint in Koh Kong, and Poipet International Border Checkpoint in Banteay Meanchey.

Credited: Text courtesy of Cambodia's Official Handbook & Official website of the Ministry of Tourism - www.mot.gov.kh