Seven ways to cross the Mekong’s borders
Most operators sell Vietnam, Cambodia and Laos as three separate countries with a flight or a bus transfer stitched between them. We build a smaller set of trips the other way round, starting from the river and letting the border crossings fall wherever the water actually crosses one. The shortest of these is a five-day hop from Chau Doc to Phnom Penh by boat. The longest runs fourteen days from the Golden Triangle in northern Thailand down through Laos and Cambodia to the delta in Vietnam, following close to the full length of river that a traveller can realistically cover on one trip.
Every itinerary here uses a genuine river crossing, a river cruise, or an overland route that runs close enough to the Mekong that you’re never far from it for long. None of them are padded with an extra city just to make the day count look bigger. If a stop isn’t on or near the river, it isn’t on this list, and a single-country trip through our Vietnam, Cambodia, Laos or Thailand pages is very likely the better fit instead.
The seven journeys
Compare the routes
| Journey | Length | Countries | Best months |
|---|---|---|---|
| Chau Doc to Phnom Penh by River | 5 days / 4 nights | Vietnam, Cambodia | Year-round; dry season (Dec–Apr) gives the smoothest river crossing |
| The Mekong Delta and Angkor | 7 days / 6 nights | Vietnam, Cambodia | Dec–Apr for reliable Angkor touring; Sep–Nov for the delta’s flood-water canals |
| Saigon, the Delta, Phnom Penh and Siem Reap | 8 days / 7 nights | Vietnam, Cambodia | Dec–Apr; avoid late Mar–Apr if the delta leg matters most to you |
| The Lower Mekong: Siem Reap to Saigon | 9 days / 8 nights | Cambodia, Vietnam | Dec–Feb for the best combination of Angkor weather and delta conditions |
| Laos and Cambodia Along the Mekong | 10 days / 9 nights | Laos, Cambodia | Nov–Feb; Dec–Feb also gives the best odds of seeing dolphins at Kratie |
| Mekong Source to Sea: Laos to the Delta | 12 days / 11 nights | Laos, Cambodia, Vietnam | Nov–Feb; this route touches almost every season-sensitive stop on the river |
| Golden Triangle to the Nine Dragons | 14 days / 13 nights | Thailand, Laos, Cambodia, Vietnam | Nov–Feb, both for weather and for the Kratie dolphin season along the way |
Choosing the right one
Direction matters more than it seems. The river runs downhill from Laos through Cambodia into Vietnam, so a route like Siem Reap to Saigon travels downstream with the current, while Chau Doc to Phnom Penh runs against it. Neither is faster or slower in practice, since these are motorised boats and vehicles, not rafts, but the direction usually follows whichever end of the trip is easiest to fly into. If your international flight lands in Ho Chi Minh City, start in the delta and work outward; if it lands in Bangkok or Phnom Penh, it often makes more sense to start there instead.
Length is really a question of how many countries you want in one trip. The five-day and seven-day routes suit a two-country add-on to a longer Vietnam or Cambodia holiday. The ten-day and twelve-day routes are built for travellers who want Laos properly represented rather than skipped, since Luang Prabang and the southern Lao river towns need real time to be worth the detour. The fourteen-day route is for one trip covering four countries; treat anything shorter as a taste of the region rather than the whole of it.
Book a Mekong journey
Every route above can be shortened, extended or combined with a beach stop or a single-country stay before or after. Send us your travel window, where your flights land, and which countries matter most to you, and we’ll adjust the itinerary rather than asking you to fit one of ours exactly as printed.
