3 weeks is a good length for a Southeast Asia trip, during which you can have an in-depth feel and not be in a rush. We present our most popular tours according to customers' choices over recent years. You can treat them as inspiration for your private travel and tailor them according to your requirements.
Other durations: 10 days, 12 days, 13 days, 14 days, 15 days, 17 days, 18 days, 19 days, 4 weeks.


3-Week Best of Thailand, Cambodia, and Vietnam Tour for Couples


20-Day Vietnam, Thailand, Cambodia, and Bali Tour


21-Day Thailand and Vietnam Adventure Tour


21-Day China, Laos, and Thailand Discovery


3-Week China and Vietnam Adventure Tour

21-Day Vietnam, Cambodia, Thailand and Singapore Tour

21-Day Hong Kong, Vietnam, Cambodia, and Thailand Tour

23-Day Vietnam, Mekong River Cruise, and Cambodia Tour

20-Day Siem Reap, Thailand, Malaysia, Singapore, Bali, Phillippine and Taiwan Tour

21-Day Vietnam, Cambodia, Thailand and Singapore Tour
Discover real reviews of Highlights Travel Family's best-rated service across trusted platforms.


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Super top travel agent
![]() Super top travel agent. Mr Monchai is an excellent guide and his valuable advices has helped us save time and money. Foreign travellers will not have any issue communicating with him and he is always here to assist his clients. He will refer you to the tastiest restaurants around Bangkok. More
Garish Rambo, Dec 2024
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Four weeks tour of Thailand
![]() We were extremely happy with Ms. A Teerarat, our Bangkog guide. Her knowledge of the history of all the places we visited was amazing. Her cheerful personality made it a joy to be with her and she felt more like a good friend than a guide. More
Herta Makitta, Dec 2024
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Tasteful & classic, 5 stars and more.
![]() We feel blessed that Nid was our tour guide. She is friendly and truly wants to make sure your stay in Chiang Mai is over the top wonderful! She arranged for my husband to go to local specialty shop that was off the beaten path, she had all my market shopping discounted and was super sweet enough to go to our friends wedding with us (she explained what was in each Thai dish at the wedding) More
Carolyn Kennell, Nov 2024
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Get Inspired with Some Popular Itineraries
At Asia Highlights, we create your kind of journey — your dates, your destinations, at your pace. You can have any trip tailor made for your travel.