How to Plan a 3-Week Southeast Asia Itinerary

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.

You could experience the monks chanting in the warm morning sun in Laos, old temples with mysterious legends in Cambodia, a quiet sunset at the beach in Thailand, the yelling of vendors from crowded boats in the canals of Vietnam, the smell of spices wafting from the night markets, the friendly people, the lovely elephants...

Where to Go in Your 3 Weeks in Southeast Asia

Here are the most popular destinations among over 10 Southeast Asian countries.

We hope this will help you choose according to your preferences and the characteristics of these destinations.

Thailand is No. 1 for travel in Southeast Asia with its splendid palaces and temples, amazing food, elephant experiences, tropical beaches...

Thailand is also a popular destination for couples due to its stunning views and romantic vibe. >>>Thailand Honeymoons/Anniversary: 8 Best Places for Romantic Stays, Itineraries

Delicious Thai food

Vietnam is a place where you can slow down and enjoy a relaxed pace. You can see the Mekong Delta from a serene cruise boat and explore the karst-island landscape of Halong Bay on a cruise. Its colonial past in the French architecture and the history of the Vietnam War are also features best savored slowly.

Extending reading: Vietnam vs Thailand: Which to Visit (A Helpful Comparison for You)

Halong Bay

What makes Cambodia famous is its national treasure — Angkor Wat. It is the world's largest temple complex. Different from those glittering golden temples in Thailand, Laos, and Myanmar, Black and dark gray are its dominant hues, representing the pinnacle of Khmer classical art.

Angkor Wat

A trip to Laos is usually connected with other Southeast Asian countries. If you have more time, it would be an interesting option. Luang Prabang, a quaint old town, is the main travel destination. The whole city was listed as World Cultural Heritage.

Alms giving in the morning

Myanmar is the last frontier of Indochina, still bearing minimal Western influence. Its distinctive sights include long lines of monks in wine-colored robes and countless temples of different architectural styles.

Bagan, a city in Myanmar

As a famous tropical vacation island, Bali is often compared to Thailand. What sets Bali apart from Thailand is that it has much richer landscapes on the island — volcanoes, rice terraces, clifftop ocean views, and a different religion (Hinduism). There are plenty of world-class hotels offering the ultimate experience. >>>Thailand/Phuket vs Bali: Which Is Better for You?

Bali

Singapore, Malaysia, and the Philippines also have many quaint islands with beautiful scenery. As maritime countries, they have many immigrants, and you can feel the fusion and collision of native culture and foreign culture there.

19-Day In-Depth Tour of Southeast Asia Experience the Splendor of Thailand, Cambodia, and Vietnam

China Highlights, Asia Highlights, and Global Highlights collaborate to provide families and couples with personalized and stress-free experiences in diverse destinations.

Great Experience WOW! I’ve traveled Asia some & I must say Sharon & Asia Highlights made this trip so much more enjoyable and easy More Stephen Hollis, Aug 2023

Alisa has has been great to work with Alisa with Asia Highlights has has been great to work with. Very friendly and responsive. More Ana Rausch, Aug 2023

Using Sharon right now to book our… Using Sharon right now to book our upcoming trip to Thailand. She has booked everything that we asked for. Has answered all of my inquiries, which has been many! Looking forward to having a great girls trip in Thailand More Tracy, Aug 2023

Thailand, Singapore, Bali In Thailand, Tanny and Nori(Suparp), were both incredible! They were both fun, funny, and full of knowledge and made sure we got the full experience. They went the extra mile and always made sure we had cold bottled water and towels to cleanse our hands. In Singapore, Nicole was an absolute gem. She was so kind and knowledgeable and guided us in the right direction to make our day as enjoyable as possible. She helped us choose a top notch local lunch and coffee spot in China Town and taught us so much about the country! In Bali, Emon was an absolute joy. He was very knowledgeable and kind and absolutely made sure we were feeling comfortable and was willing to be flexible with us. He was fun to converse with and made our time traveling between destinations so enjoyable! I cannot recommend Asia Highlights enough! Accommodations, travel arrangements and guided tours were all a breeze. More Cassi Thunker, Jul 2023

Very supportive Very supportive ! I have received eticket for Sky Lattern Festival very fast More Chi?n Nguy?n Ng?c, Jul 2023

My experience in Chang Mai with Asia Highlights I greatly enjoyed my experience with Asia Highlights for a trip I booked to Thailand.All of my interests were catered too. My guide in Chang Mai Gemma was excellent.I truly felt the soul of Thailand culture and Buddhism. More Richard, Jul 2023

A pleasure to plan with Well, this has been a painless and pleasurable process to find such a wonderful company. I had specific dates and places to be and Sharon worked with me diligently to refine the schedule and costs to suit my travel needs and budget. She informed me of a special tour on the dates I am to be in Thailand and I added that to my previous plans. More Chris Williams, Jul 2023

Large multi-generational holiday in Thailand The holiday was wonderful. Our guides, Mr Monchai (Bangkok), and Ms Tipagorn (Tippy) (Chiang Mai) were exceptional. Travelling in a large multigenerational group with many children requires patience and our guides truly understood that. Mr Monchai and Ms Tippy shared their extensive knowledge of the many wonderful places we visited, and were flexible to take us to additional places along the way based on discussions. While everyday was busy, having them greet us with patience and a smile truly made this a memorable holiday. The hotels we stayed at were equally wonderful and went above and beyond to celebrate not only my parents 50th anniversary but also celebrate 2 milestone birthdays that occurred. We will cherish this holiday for many years to come. We hope to use Asia Highlights again. More CL, Jul 2023

I never used a travel agent in my life I never used a travel agent in my life, but Sharon for Asia Highlights did a phenomenal job helping planning and coordination a family vacation. The best part of working with Sharon was that she maintained an open line of communication and provided answers to my question well within 12-24 hours. Additionally, Sharon was flexible and customized our vacation to my families needs. Overall great experience. More Antione Barry, Jul 2023

Great company to plan a trip to Southeast Asia! Sharon Haung has been wonderful to work with! Very patient and accommodating. Responds immediately given time change and is prepared, prompt, and professional. More Debi Hinerfeld, Jul 2023

We took a 15 days trip (10 days Vietnam and 5 days Thailand … It was an amazing experience the guides and drivers were there awaiting for us at each airoport for a transfer to the hotels also on time for all the tours all the guides were so lovely , very experienced and spoke very good English , one of the days on tour in Thailand I lost my phone in a temple in Bangkok mr chai went out of his way in a middle of thousands of visitors and managed to find an bring it back to me I found that amazing , also while on a trip I contacted Jason li out tour organizer few time via whatup and he replied and helped on the spot I recommend asiahilights 150% The quality of the service hotels the guides the drivers outstanding From start to finish ABSOLUTELY BRILLIANT ???? More SIMO el ghobar, Jun 2023

Wonderful Guides and Experience Our large group arrived in Bangkok with Tanni as our guide. She was wonderful! An absolute joy to spend time with. She is knowledgeable, kind, and extremely funny. I don’t know what we would have done without her! After Bangkok, we traveled to Chang Mai, where Indy was our tour guide. She was a delight! She is kind, knowledgeable, and so patient. Our trip to Thailand was an adventure of a lifetime and these two women helped make it memorable. I would definitely use Asia Highlights for any future travel in Asia. More Jessica Bennett, Jun 2023

Guide - Chai We travelled from Vietnam to Bangkok and were blessed to have a guide named Chai. He was a superb guide and it is a pity we couldn't bottle him and take him home. He was very knowledgeable and an absolute gentleman. He could not have done enough to facilitate us and imparted so much knowledge about the Temples, Buddism and the History of Thailand in general. Not only did he give us a great overview of the past and current ways of living in Thailand but I also feel I came away a much better person having interacting with him. I will carry many of his teachings with me for the rest of my life and know that having met him was a very special blessing in my life. More Customer, Jun 2023

Our guide Tanni was kind Our guide Tanni was kind, knowledgeable, funny and beyond accommodating for our group. We felt like we'd made a friend and it enhanced our trip in the most positive way. Everything was coordinated perfectly which is not easy to do in a large traveling group. Excellent experience! More Marissa Manson, Jun 2023

We are only on day 5 of our 15 day trip… Our first stop so far was in Hanoi where our guide Trong was just so awesome! He shared about his culture and family life which showing us sites through a city tour. He was so funny making lots of jokes and always made sure we were having fun while learning about everything! He checked on us frequently even when we were no longer with him since we then went on a cruise in Halong Bay! Halong Bay and the cruise on Paradise Elegance went way above anything I expected. The scenery was breathtaking, the ship was so beautiful and clean with such fresh, good food! And I can’t sing enough praise for the staff who took care of us- especially Anna and Belle! They went above and beyond to make sure we enjoyed every aspect from eating meals with Anna to every other detail with Belle! I highly recommend Asian Highlights to help plan these extraordinary trips! This already has been a trip of a lifetime and we still have so much more to see all thanks to Cathy!! More Diane Creitz, Jun 2023

Tanni for the win! 14 of my closest friends and family descended upon Bangkok ready to see the town. Asia highlights and Tanni took us on a tour that changed our lives. We experienced so much everyday. Tanni was amazing! She did all the thinking for us, so we all could just be present and enjoy the moment. I can’t recommend this company, and especially Tanni enough. More Megan McGlynn, Jun 2023

This isn't my first trip with Asia… This isn't my first trip with Asia Highlights. They are great at helping me plan, working my requests into the itinerary, and booking it all. We travel with friends and just got back from a trip to Thailand and Vietnam. Albee did a great job with all the details and we had a wonderful time. We will use them for our next adventure! More Katie Potesta, Jun 2023

Amazing service Although we have not been our trip yet I wanted to still write a review based on customer service and the ease of booking. Alisa has been extremely prompt and responsive with planning our trip to Thailand. She has had great recommendations and guidance to add to our custom itinerary. Highly recommend using Asia highlights! -Alex More Alex, May 2023

I have never hear of this company… I have never hear of this company before , and after reading all these reviews ,I decided to give it a try . The professionalism and communicative skill received by one of the agent , Sharon of Asia Highlights , convince me that She was the right travel agent for my trip in Asia . Very quickly she communicated with me and got all the detail of my desire vacation . Sharon made me a great itinerary with great experiences that I am dreaming to experience and I am looking forward to it . Thanks Sharon for been so great and crafting me a dream vacation with great suggestions. More orge alvarez, May 2023

Coco Yang worked tirelessly to… From the moment I landed in Bangkok, Ms Noi Ying was there to welcome me and get me settled into my hotel. We enjoyed several days together touring Bangkok and Kanchanaburi. In Chiang Mai, Mr Ekachai took my son snd I on an amazing trip to the Elephant Jungle Sanctuary and to visit a community Lanna home, gardens and a hands-on cooking class preparing an authentic Thai meal. Lisa arranged a last-minute speedboat tour of 5 breathtaking islands in Phuket. From start to finish, the guides exceeded my expectations!! Thank you, Asia Highlight!! Debbie Woods More Debbie Woods, May 2023

3-Week Southeast Asia Itinerary: Best 3 Options

Here are three options matching different needs for your reference.

1. Thailand, Cambodia, and Vietnam (Most Chosen)

Thailand, Vietnam, Cambodia is the most popular and classic combination for a 3-week trip to Southeast Asia.

These three countries gather almost all the elements of Southeast Asia — splendid temples, gorgeous beaches, compelling history, amazing food, the Mekong Delta, and Buddhist culture.

• Days 1–8: Vietnam

In Vietnam, explore the three most important cities of Hanoi, Hoi An and Ho Chi Minh City from north to south. Try some special activities like a basket boat ride, a traditional means of transport for local fishermen.

Enjoy the karst landscape of Halong Bay and surrounding caves with a cruise and visit the Mekong Delta to see the busy lives of traders.

Suggested Vietnam itinerary:

Hanoi (2 days)

Halong Bay (1 day)

Hoi An (2 days)

Ho Chi Minh City (1 day)

Mekong Delta (2 days)

• Days 9–11: Cambodia

Cambodia is a relatively small country. Siem Reap is the main tourist destination for the great Angkor Wat. In 3 days, besides the Angkor Wat, you can visit some unique attractions like the Cambodian Landmine Museum, showing Cambodian efforts to clear land mines, and take an ox cart ride along a country road to really appreciate its rustic views.

Suggested Cambodia itinerary:

Siem Reap (3 days)

• Days 12–19: Thailand

Explore the most important cities of Bangkok and Chiang Mai to see the Grand Palace, meet elephants, join a cooking class, and to finish, have some relaxing beach time on an island.

Suggested Thailand itinerary:

Bangkok (2 days)

Chiang Mai (2 days)

An island (Phuket or Koh Samui) (4 days)

Check out more on our How to Plan a 3-Week Thailand, Cambodia, and Vietnam Tour or in-depth exploration of 3 weeks in Thailand and Cambodia>>>

15-Day Best of Thailand, Cambodia, and Vietnam Tour Immerse Yourself in Southeast Asia's Rich Cultural Heritage and Natural Wonders

2. Singapore, Bali, and Thailand (for Beach Lovers, Honeymooners)

If you are planning a beach holiday, you can consider this combo. Singapore, Bali, and Thailand all have wonderful beaches and scenery. It is also suitable for honeymoons or anniversaries.

• Days 1–6: Singapore

Pulau Ubin

In Singapore, feel the mix of different cultures in Singapore by discovering ethnic enclaves — Chinese culture in China Town, Malay culture in Kampong Glam, and Indian culture in Little India.

Singapore also has many quaint islands. Enjoy quiet time away from the hustle and bustle on beautiful islands like Pulau Ubin.

• Days 7–13: Bali

Bali's night

A direct flight from Singapore to Bali only takes 2½–3 hours.

Bali is rich in landscapes. You can enjoy the most stunning sunsets on Jimbaran Beach, cycle among winding terraced fields, learn about Bali's Indian culture in its temples, which differ from the Buddhist temples in most other southeast Asian countries, take a cooking class, experience the charming of Bali at night in a bar...

Find more details on our suggested 13-Day Private Singapore and Bali Journey of Discovery

• Days 14–21: Thailand

Phuket

A direct flight from Bali to Bangkok will take 4–4½ hours.

Visit Bangkok and Chiang Mai, and enjoy beach time on an island.

In Bangkok, feel the Buddhist culture in the Grand Palace and temples. Enjoy a dinner cruise on the Chao Phraya River.

In Chiang Mai, have a close encounter with elephants in the best Chiang Mai elephant park and climb Mount Doi Suthep, the landmark of Chiang Mai.

Finally, enjoy leisurely beach time on a tropical island (Phuket, Koh Samui, or Koh Yao Noi are great choices). >>>How to Choose from Thailand's Islands (Your Island Hopping Guide)

Suggested itinerary:

Bangkok (2 days)

Chiang Mai (2 days)

An island (Phuket, Koh Samui, or Koh Yao Noi) (4 days)

For more detail, see our 8-Day Idyllic Honeymoon in Thailand.

3. Thailand, Cambodia, Vietnam, and Bali

If you want to see more and don't mind a relatively tight pace, you could consider this route.

Maybe you have other preferred countries or combos, you can also contact us and we will create your ideal itinerary based on your preferences, group size, budget, and other needs.

• Days 1–3: Vietnam

Explore Hanoi and embark on a Halong Bay cruise.

Explore Hanoi's history and culture through its landmarks like Ho Chi Minh Mausoleum, the Temple of Literature, and the Old Quarter.

Enjoy stunning karst views and other Halong Bay cruise features, like sea swimming and an open bar on board.

Suggested itinerary:

Hanoi (2 days)

Halong Bay (1 day)

• Days 4–6: Cambodia

Discover Cambodia's top temples of Angkor in Siem Reap and discover its hidden story. Discover Banteay Srei, known as the 'Citadel of Women'. Visit the Cambodia Landmine Museum to see Cambodian's post-Civil-War cleanup efforts, and enjoy a sunset cocktail on Tonle Sap Lake.

Suggested itinerary:

Siem Reap (3 days)

• Days 7–12: Thailand

In Bangkok, visit the Grand Palace, take a tuk-tuk ride, and explore Chinatown.

In Phuket, enjoy a leisurely time by the beach. Snorkel, hop to the Phi Phi Islands, enjoy a serene cruise around the mystical Phang Nga Bay...

Suggested itinerary:

Bangkok (2 days)

Phuket (4 days)

12-Day Thailand, Cambodia, and Vietnam Tour Spellbinding Historic Sites, Natural Beauty & Welcoming People

• Days 13–20: Bali

Enjoy the Jimbaran sunset on a cruise. Visit its Hindu temples and find out the background legends. Try some exciting and interesting activities like white water rafting in the rainforest, Balinese cooking classes, and going on a vintage Volkswagen car tour.

Suggested itinerary:

Bali (8 days)

>>> 8-Day Private Authentic Bali Discovery Tour

How Much Is a 3-Week Trip to Southeast Asia?

Southeast Asia offers good value for money. For the price of a mediocre restaurant in Western countries, you can enjoy a superb meal at a Michelin-starred establishment in Southeast Asia.

• For a medium budget, it will cost around 200–250 USD per day per person (including air fare within Southeast Asia, 4- or 5-star hotel, lunch, attractions, guide and transfers). Thus, it may cost about 4,000–5,000 USD for 3 weeks.
• For a higher budget, US$250–350 per day per person is needed (including air fare within Southeast Asia, 5-star or plus hotel, lunch, attractions, guide and transfers). The cost for 3 weeks is around 5,000-7,000 USD.

28-Day Grand Indochina Tour Myanmar - Vietnam - Laos - Cambodia - Thailand

Tips for Arranging a 3-Week Itinerary in Southeast Asia

1. Don't arrange the schedule too tight. Filling a day with attractions will only leave you exhausted.

2. Choose multi-faceted destinations. Many countries have similarities. In a limited time, it is wise to choose one that has richer experiences. For example, both Thailand and Laos are known for palaces, temples, and elephants, but Thailand has more to offer, like islands and world-class food.

3. Prepare documents in advance. Visas and entry documents related to COVID-19 prevention should be prepared in advance to make your trip smooth. For example, Vietnam and Cambodia need e-visas. Check out our Asia Visas, Southeast Asia Visas

Suggested reading: How to Plan a Trip to Southeast Asia.

4. Keep an eye on flights. Because Southeast Asian countries are gradually reopening for tourism, flight prices will change rapidly. The earlier you grab a deal, the more likely you are to get a good price.

5. Seek a travel agency. A professional agency can provide you with a well-planned itinerary that saves you time and money, help you prepare documents, deal with any urgent matters in a timely/stress-reducing way, and be your safeguard for your overseas trip.

We promise you enjoy 100% refund of any payments made to China Highlights prior to 3 weeks before departure (detail⇒).

21-Day China, Laos, and Thailand Discovery From Beijing to Luang Prabang and Bangkok: An Epic Journey across Asia

Contact Us for Booking

You are warmly welcomed to have us customize your trip based on your group size, interests, and other needs. Sit back and use our Create My Trip service.

Or start from a recommended fully-modifiable itinerary:

• 19-Day Highlights of Thailand, Cambodia, and Vietnam
• 12-Day Essential Thailand, Cambodia, and Vietnam Tour
• 28-Day Grand Indochina Tour (Thailand, Cambodia, Vietnam, Laos, and Myanmar)
• More Southeast Asia Tours

Related Reading

• How Long Should You Spend Touring Southeast Asia: From 2 Weeks to 3 Months
• How to Plan a 2-Week Family Trip to Southeast Asia
• Detailed 2-Week Southeast Asia Itineraries for Honeymoons, Families, and More
• The Ultimate 4-Week Southeast Asia Itinerary for You! (Expert Advice)
• How to Plan a Trip to Thailand and Cambodia?
• Tourist Visa Guide to Popular Destinations in Asia