Cross-border planning guide – Updated September 23, 2026
Vietnam to Cambodia Border Crossings: Buses, Speedboats & Visas
Connecting Vietnam with Cambodia overland or by river offers a seamless, budget-friendly alternative to regional flights. Whether you take a direct international express bus from Ho Chi Minh City through Moc Bai, ride a scenic speedboat along the Mekong River from Chau Doc, or cross the southern coastal border from Ha Tien to Kampot, selecting the right frontier post saves hours of checkpoint delays and prevents common visa scams.
Concierge verdict
For the fastest overland route between Saigon and Phnom Penh, book a seat with Giant Ibis or Kumho Samco (550,000 to 750,000 VND) through the Moc Bai – Bavet checkpoint. Reputable operators manage your border paperwork, guide you through immigration customs, and ensure your baggage transitions smoothly in roughly 6 hours total. If you want scenic beauty, take the 5-hour international speedboat from Chau Doc along the Mekong River ($35 USD), where immigration takes place at relaxed floating river pontoons surrounded by stilt fishing communities.
Border crossings compared
| Border Crossing Gate | Transit Mode | Travel Time | Typical Fare | Best Connected Destinations |
|---|---|---|---|---|
| Moc Bai / Bavet (Tay Ninh / Svay Rieng) |
Direct International Coach (Giant Ibis, Mekong Express) |
6 hours | 550,000–750,000 VND ($23–$30 USD) | Ho Chi Minh City to Phnom Penh |
| Vinh Xuong / Kaam Samnor (An Giang / Kandal) |
Mekong River Speedboat (Hang Chau Tourist, Blue Cruiser) |
5 hours | 850,000–1,100,000 VND ($35–$45 USD) | Chau Doc (Mekong Delta) to Phnom Penh |
| Xa Xia / Prek Chak (Kien Giang / Kampot) |
Ferry + Taxi + Minivan | 4 to 5 hours | 400,000–600,000 VND ($16–$25 USD) | Phu Quoc / Ha Tien to Kep & Kampot |
| Tinh Bien / Phnom Den (An Giang / Takeo) |
Local Bus & Shared Taxi | 5.5 hours | 350,000–500,000 VND | Chau Doc to Takeo & Phnom Penh |
| Le Thanh / O Yadaw (Gia Lai / Ratanakiri) |
Motorbike / Private 4WD | 7+ hours | Variable | Pleiku (Central Highlands) to Banlung |
1. Moc Bai – Bavet: the main highway corridor
Connecting Ho Chi Minh City directly with Phnom Penh along Asian Highway AH1, Moc Bai is by far the busiest international land border. Daily express buses depart central Saigon (District 1 around Pham Ngu Lao and Cong Quynh streets) between 06:30 and 15:00.
How the border transit works:
- Departure from Saigon: The bus drives 2.5 hours northwest through Tay Ninh province to the Vietnamese border complex at Moc Bai.
- Vietnamese Exit: Passengers disembark, take personal daypacks, and enter the Vietnamese terminal. The bus conductor hands your passport to immigration officers, who stamp your departure.
- Walk through No-Man’s-Land: You walk 200 meters across the neutral border strip past casino complexes into the Cambodian Bavet checkpoint.
- Cambodian Entry: Enter the air-conditioned arrival hall, present your passport and Cambodia e-Visa (or apply for Visa on Arrival), complete digital fingerprint scans, and clear baggage through customs scanners.
- Reboard the Bus: Walk outside to find your bus waiting in the designated bay; the remaining drive to Phnom Penh takes roughly 3.5 hours, including a Neak Loeang bridge crossing.
2. Chau Doc to Phnom Penh: the Mekong river route
For travelers exploring the Mekong Delta, traveling to Cambodia by river provides a serene transition. Daily scheduled express boats operated by Hang Chau Tourist and Blue Cruiser depart Chau Doc boat pier at 07:00 and 07:30.
Boats cruise up the wide Song Tien river past floating fish farms, water hyacinth rafts, and rural stilt villages. At the Vinh Xuong river checkpoint, the boat ties up alongside floating wooden immigration pontoons. Passengers disembark with passports while boat staff coordinate customs clearances with Vietnamese and Cambodian border guards. After an effortless 30-minute stop, the vessel glides across the frontier and docks at Sisowath Quay in central Phnom Penh by 12:30.
3. Ha Tien – Prek Chak: coastal beach link
If you are vacationing on Phu Quoc island and wish to travel onward to Cambodia’s southern coast (the pepper plantations of Kampot, crab markets of Kep, or islands of Koh Rong), crossing at Ha Tien (Xa Xia gate) avoids an unnecessary detour back through Saigon.
Take a 75-minute morning express ferry (Superdong or Phu Quoc Express, 250,000 VND) from Bai Vong pier to Ha Tien. From Ha Tien ferry terminal, take a 15-minute taxi (100,000 VND) to the Xa Xia border gate. After stamping out of Vietnam and into Cambodia at Prek Chak, private taxis ($20 USD) or shared minivans ($10 USD) take 45 minutes to reach Kep or 75 minutes to reach Kampot.
Cambodian visa rules and scam avoidance
Border scam protection protocol
1. Secure an official e-Visa in advance: Apply exclusively at the official government portal (evisa.gov.kh) for $36 USD at least 4 business days before travel. Print two physical paper copies. Having an official e-Visa eliminates border corruption entirely.
2. Visa on Arrival cash rules: If getting Visa on Arrival ($30 USD), carry crisp, uncreased US dollar bills with zero tears or stamps. Officers reject worn notes.
3. Refuse the fake “Medical Quarantine” fee: Tents or tables marked “Quarantine” or “Health Check” outside the terminal often demand 20,000 to 50,000 VND ($1–$2 USD) for a worthless temperature check. Walk firmly past them straight into the main immigration hall.
4. Avoid border money changers: Unregulated currency touts in no-man’s-land offer predatory exchange rates. Withdraw Cambodian Riel or US dollars from legitimate ATMs inside Phnom Penh.
Frequently asked questions
Does my Vietnam visa allow me to re-enter?
Single-entry Vietnam visas expire immediately upon exiting at Moc Bai or Chau Doc. If you plan to return to Vietnam after touring Angkor Wat in Siem Reap, ensure you hold an official 90-day multiple-entry e-Visa, or verify that your passport qualifies for visa-free entry under Vietnam’s unilateral exemption policy.
Which bus company is best from Saigon to Phnom Penh?
Giant Ibis is widely regarded as the most reliable operator for international travelers. They charge roughly $25 to $28 USD per ticket, use modern air-conditioned coaches with onboard Wi-Fi, and employ English-speaking attendants who personally guide passengers through both border complexes.