Easiest way overland will be via Saigon -- will def. be faster than going via Laos. Can also fly -- Da Nang to Saigon and then to Siem Reap -- depends on your budget and how much time you have up your sleeve.
See the Visa and border crossing FAQ for info on individual border crossings.
How about this amazing & fantastic overland route as below? (if you have enough time to do)
●Hoi An →Da Nang→Ngoc Hoi →(Bo Y border) →Attapeu→ Pakse →Si Phan Don(4000 islands)→(Lao/Cambodian border・visa on arrival)→stung Treng→Phnom Penh→Siem Reap●
*Hoi An→Attapeu or Pakse in Laos----within 1 day by bus possible.
*Da Nang→Ngoc Hoi (in Central Highlands of Vietnam)---about 4 hours by express bus.
*Ngoc Hoi→Attapeu--- only 3 hours except the time of formalities of both sides at Bo Y border.
*attapeu→ Pakse ---about 4 hours by bus.
* Pakse →Si Phan don----3～3.5 hours by bus(including boat riding to island)
*Si Phan Don(4000 islands)→Stung Treng---Half day trip including borded crossing(VOA avalable into Cambodia), tours are arranged by several tour companies(tour desks) in Pakse or Si Phan Don.
* Pakse →Stung Treng--- also within half day tour possible.
*Stung Treng→Phnom Penh---8～9 hours by bus
*Phnom Penh→Siem Reap---5 hours by bus or speed boat
If you are interested in this route and need more informations in details about Bo Y boder crossing,transports and acommodation at Ngoc Hoi,I'll post more.
#3 tf_geckozy has been a member since 2/9/2008. Posts: 82
Hi, tf_geckozy. Could you post more details of the itinerary? where do you recommed to stay overnight? is it really a nice trip? Thanks!
#4 arenal has been a member since 2/2/2008. Posts: 12
I'm also interested in doing a similar thing... going through Laos before going through Vietnam (Hoi an southwards) before going through Cambodia and back to Thailand (where I am starting). Just posting on here to bookmark it for later
#5 Phiddy has been a member since 1/12/2011. Posts: 64