Mekong River Cruises
Mekong river cruises come as part of long (two weeks or more) land tours, including several nights in hotels as well as overnights aboard ship, so consider the total package when choosing your cruise. (If you want the cruise-only portion, look for a seven-night trip like the one offered by Avalon Waterways). The majority of Mekong River cruise tours start and end in Vietnam, beginning in Hanoi and ending in Ho Chi Minh City (Saigon) or vice versa. They include a flight to Siem Reap and a sail on the Mekong, with ports in Cambodia and Vietnam.
Note that the cruise portion along the Mekong River and Lake Tonle Sap in Cambodia can be affected by seasonal water levels, so itinerary details are subject to change. The river reaches its highest level in September. Weird fact: The Tonle Sap River, which links the lake to the Mekong River, reverses its flow during periods of flooding. The surge of river water increases the lake’s size six-fold, and transforms it into one of the world’s most productive fisheries.