Mekong River Cruise from Cambodia to Vietnam: The Aussie Visa Playbook for 2026

Visa logistics: two visas, three business days, one PDF

The Cambodia eVisa for Australians is $80 USD (~$122 AUD) all-in. Approved in 3 business days. Delivered as a printable PDF by email. No flight booking, no hotel reservation, no bank statement, no embassy interview. The Australian application walkthrough covers every field; the country pillar covers eligibility for Aussie passports.

The Vietnam eVisa is a separate application through the Vietnam e-Visa Portal. $25 USD (~$38 AUD) single-entry, three working days. Single-entry is fine for the cruise — you enter Vietnam once by river and exit once by air. If your wider trip plan includes a Vietnam-to-Cambodia loop later, look at the multi-entry version at $50 USD (~$76 AUD). The Vietnam–Cambodia visa combo guide covers the dual-visa sequencing in more detail.

Print two A4 colour copies of each visa PDF. One copy goes to the cruise purser at embarkation, one stays in your cabin. Phone screens are not accepted at the river checkpoint — bring paper. Your passport needs at least six months of validity from the embarkation date and two clean blank pages (one for the Cambodian exit stamp, one for the Vietnamese entry stamp).

Cambodia visa-on-arrival technically exists at Phnom Penh airport (KTI) but it is not the right tool for a cruise traveller. The eVisa is approved in 3 business days, delivered as a printable PDF by email, and lets you walk through the e-gates at KTI without standing in the VoA queue with $35 USD (~$53 AUD) in clean small notes and the on-arrival photo. For a $4,000-plus cruise the safer pre-trip path is the eVisa, every time.

How the river border crossing actually works onboard

The Cambodia-to-Vietnam border on the Mekong is at the Kaam Samnar (Cambodian side) and Vinh Xuong (Vietnamese side) river checkpoints, roughly two-thirds of the way down the standard Phnom Penh-to-Saigon route. Every operator handles it in essentially the same way. The day before the crossing, the purser walks the ship and collects every passenger's passport, eVisa printouts, and a small disembarkation form completed onboard. You keep a photocopy of your passport and visa in your cabin as a courtesy backup.

Overnight the ship moors at the Cambodian checkpoint. Cambodian Immigration officers come aboard, check the stack of passports against the manifest, stamp every passport with a Cambodian exit stamp, and leave. The ship then drifts a few hundred metres south to the Vietnamese checkpoint. Vietnamese Immigration boards in turn, checks each Vietnam eVisa printout against the matching passport, stamps a Vietnamese entry stamp, and disembarks. The whole sequence typically wraps between 11pm and 4am — you sleep through it.

At breakfast the next morning, the purser does a small handover at the dining-room entrance — your name is called, you initial a sheet, you collect your passport with both stamps in place. Take a minute right there to flip to your stamps and check the dates, the spelling of your name, and the 30-day stay endorsement (Vietnam) or 30-day stay endorsement (Cambodia, in reverse direction). If anything looks off, the purser can radio the checkpoint office; they almost never need to.

You still need the Cambodia e-Arrival Card for the flight in

The Cambodia e-Arrival Card is mandatory for every air arrival into Cambodia, regardless of whether you are continuing by cruise. Your incoming flight from Bangkok, Singapore, or Kuala Lumpur to Phnom Penh's KTI airport triggers the requirement. The card has 14 fields, must be submitted in the 7-day window before your flight, and is checked at the Phnom Penh e-gates alongside your eVisa. The e-Arrival 14-field walkthrough covers every field. KTI replaced the old Phnom Penh airport on 9 September 2025 — the KTI airport guide covers the layout if you have not flown in since the switch.

Our verified e-Arrival service is $5 USD (~$7.50 AUD) per traveller, submitted on your behalf within the 7-day window, and the resulting QR code is delivered by email. Each person in your cabin needs their own — couples and families cannot share one card. Save the QR to your phone's photo album, not just your inbox; some Aussies arrive at Phnom Penh with their phone offline and find they cannot open Gmail at the desk.

There is no e-Arrival requirement on the Vietnamese side for the river crossing. Vietnam currently has no separate digital arrival card for foreign passport holders entering by land or river — the eVisa printout covers entry. The cruise purser handles the Vietnamese disembarkation form on your behalf.

Cost, timing, and when to book

Mekong cruise pricing for Australians sits between $2,500 and $6,000 AUD per person, depending on operator, cabin tier, length, and how far in advance you book. The mid-range mark for a 7-night Phnom Penh-to-Saigon cruise on a premium operator like AmaWaterways or Avalon is roughly $4,500 to $5,500 AUD per person twin-share. Pandaw and Heritage Line lean a little lower at $3,200 to $4,800 AUD for similar lengths.

Visa costs sit on top of the cruise fare and are essentially negligible against it. Cambodia eVisa at $80 USD (~$122 AUD), Vietnam eVisa at $25 USD (~$38 AUD), Cambodia e-Arrival at $5 USD (~$7.50 AUD), and travel insurance is usually $80 to $150 AUD per person for a fortnight. Total visa-and-document budget around $215 AUD per person, against a $4,500 AUD cruise fare, is two days of onboard tipping.

Best time to sail for Aussies is the November-to-February high-water season, when the Mekong is full and the boats sit higher on the riverbank. March and April are the dry-season tail — the river is lower, some moorings are trickier, but the weather is reliably warm and dry, which suits a winter-tail Aussie school-holiday trip. Avoid May through August if you can — high humidity, frequent afternoon storms, and some operators reduce their schedule or cap the smaller boats.

Book the cruise 9 to 12 months ahead for high season, especially if you want a specific cabin tier or a particular departure date. Apply for your Cambodia eVisa and Vietnam eVisa 3 to 6 weeks before sailing — early enough to have the PDFs in hand well before you fly out of Australia, late enough to keep both validity windows comfortably overlapping the cruise dates. The visa cost guide breaks the full Aussie-dollar conversion picture down for 2026.

Common Aussie cruise gotchas

Four mistakes come up regularly from Aussie cruise clients. Each one is fixable in advance with a five-minute check.

• Assuming the operator applies for visas. They do not. The crew checks, collects, and presents — but the application is your job. Boarding without an approved eVisa is a hard no.
• Single-entry Vietnam eVisa when your wider trip needs multi-entry. If you plan to fly into Saigon, do the cruise, then loop back to Cambodia or Laos and re-enter Vietnam, you need the $50 USD (~$76 AUD) multi-entry. Single-entry is one-use only.
• Booking flights too tight at the Saigon end. Most cruises disembark in central Saigon mid-morning. Aussies who book a same-day evening flight home then find their cruise runs an hour late, traffic to Tan Son Nhat (SGN) is heavy, and the buffer evaporates. Build a one-night Saigon stay in.
• Skipping the Cambodia e-Arrival because you 'are doing a cruise'. The card is for the flight in to KTI, not the cruise. Skipping it means an awkward extra 25 minutes at the airport e-gates while you fill the 14 fields on a slow Wi-Fi connection.

One last point on the Thailand alternative: some Aussie cruise itineraries used to combine a Bangkok or Chiang Mai overland leg with the Phnom Penh embarkation. That overland leg has been off the table since June 2025 — all seven Thailand–Cambodia land borders remain closed. Bangkok is still a useful flight stopover en route to KTI, but you cannot continue overland. The Thailand–Cambodia border closure update has the broader context.

Next steps and related reading for Australians: apply for your Cambodia eVisa when you are ready to lodge, bookmark our Cambodia visa hub for Australian citizens as the single canonical reference, skim the FAQ on Cambodia visa eligibility for quick answers, and use our glossary of Cambodia visa terms to decode any acronym in this guide.