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How to Plan a 3-Week Thailand, Cambodia, and Vietnam Tour

How to Plan a 3-Week Thailand, Cambodia, and Vietnam Tour

By Chris QuanUpdated Oct. 27, 2022

Thailand, Cambodia, and Vietnam appear most frequently on Southeast Asia travel lists as together they contain almost all the distinctive elements of Southeast Asia — amazing temples, food, beaches, nature... Thus, they form one of the most popular combos for a Southeast Asian trip.

In this guide, we are going to look at how to plan a tour of Thailand, Cambodia, and Vietnam.

Is 3 Weeks Enough for a trip to Thailand, Cambodia, and Vietnam?

Yes, 3 weeks is suitable for a trip to Thailand, Cambodia, and Vietnam with all the must-sees covered at a comfortable pace: spending 8–10 days in Vietnam, 3–5 days in Cambodia, and 8–10 days in Thailand

Extending reading: How Long to Spend in Southeast Asia (for First Timers): from 2 Weeks to 2 Months

A Vietnam trip usually covers three important cities from north to south (Hanoi, Hoi An, and Ho Chi Minh City) and the Mekong Delta.

For a tour of Thailand, the popular combination is Bangkok (capital city), Chiang Mai (the largest city in northern Thailand), and an island in southern Thailand (usually Phuket or Koh Samui). Phuket is the most popular, while some couples prefer Koh Samui’s romantic vibe.

Cambodia is a small country. Siem Reap (the second largest city in Cambodia) is a must-visit for its incredible Angkor WatPhnom Penh (its capital city) is an option if you have time.

However, if you don’t have 3 weeks, but still want to this combo, you will need to tighten your itinerary. So, we also offer an “essence” route for a shorter vacation: 12-Day Essential Thailand, Cambodia, and Vietnam Tour. Maybe you could manage something in between. Contact us for a tailored tour.

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A Classic 3-Week Thailand, Vietnam, and Cambodia Itinerary

Thailand, Vietnam, and Cambodia are 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.

Our sample itinerary will provide a reference for you. We’re very happy to adjust it based on your travel time, interests, budgets, group size, and other requirements.

Days 1–8: Vietnam

Mekong Delta Mekong Delta

Vietnam’s shape is like a long ‘S’, usually divided into the north, central, and south regions.

Its capital city Hanoi is in the north, which features karst landscapes and ethnic customs.

Ancient towns and beaches are the highlights of its central cities like Hoi An.

Ho Chi Minh city and the famous Mekong are in the south. The Mekong Delta’s natural views and local life cannot be missed.

The Mekong Delta has a complex terrain. You need to make a travel plan and research Mekong boating information in advance. You could alternatively book a trip with us. Feel free to contact us if you need any help.

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

Angkor Wat Angkor Wat

Siem Reap is the main destination in Cambodia. In Siem Reap, visit Angkor Wat, take an ox cart ride through the country roads, and enjoy a sunset cocktail by Tonle Sap Lake.

Cambodia’s capital Phnom Penh could be an option if you have more time. It usually takes 1–2 days.

It should be noted that Siem Reap does not have direct flights to Bangkok every day, so you need to refer to the flight information when planning.  

Contact us if you have any problems. We will give you the best options and suggestions according to your travel time.

Suggested Cambodia itinerary:

  • Siem Reap (3 days)

Days 12–19: Thailand

Chiang Mai Elephant Rescue Park Chiang Mai Elephant Rescue Park

Usually, a trip to Thailand contains two cities and one island.

Bangkok, the capital city, and Chiang Mai are the two most representative cities to visit in Thailand.

In Bangkok, explore its iconic Grand Palace, try local experiences like taking a tuk-tuk and a long-tail boat, and visit a special local market like Maeklong Railway Market.

In Chiang Mai, have a close encounter with elephants, join a Thai cooking class, learn to make a Thai floating lantern...

Phuket and Koh Samui are the two popular islands in Thailand. Phuket is the most chosen for its easier accessibility and diverse options for activities and prices. See more on Phuket vs Koh Samui: An Honest & Helpful Comparison for You.

Suggested Thailand itinerary:

  • Bangkok (2 days)
  • Chiang Mai (2 days)
  • An island (Phuket or Koh Samui) (4 days)

How Much Does a Thailand, Cambodia, and Vietnam Trip Cost?

Southeast Asia offers great value for money.  That's one of the reasons it's so popular. It can match a wide range of budgets.

  • If you have a lower budget, you will need around 180–200 USD/day per person (including air fare within Southeast Asia, 3-star hotel, lunch, attractions, guide and transfers). 
  • For a medium budget, it will cost around 200–250 USD per day per person (including air fare within Southeast Asia, 4-star hotel, lunch, attractions, guide and transfers). 
  • For a higher budget, US$250–350 per day per person is needed (including air fare within Southeast Asia, 5-star hotel, lunch, attractions, guide and transfers). 

Which Country to Enter First

Southeast Asia Tour Map

Flying to Vietnam or Thailand first is usually the most choice, because Cambodia has fewer options for international flights than the other two countries. But Cambodia offers easy access to/from Thailand and Vietnam, so it’s good as the middle country.

Thus, the travel route usually goes Vietnam–Cambodia–Thailand or Thailand–Cambodia–Vietnam.

Going to Thailand or Vietnam first may depend on plane ticket prices, the flight situation from your city, your travel preferences, and so on.

It should be noted that since tourism in Southeast Asia has just reopened “post-pandemic”, there are frequent changes in flights and requirements, so you need to pay more attention to the flight information and be prepared for adjustments when making plans. 

Contact us if you have any problems. We will give you the best options and suggestions according to your travel time.

How to Travel between Thailand, Cambodia, and Vietnam

Flying is the fastest and most convenient way to travel between Thailand (Bangkok), Cambodia (Phnom Penh or Siem Reap) , and Vietnam (Hanoi or Ho Chi Minh City). There are direct flights for these cities. Each journey takes about 1–1½ hours.

You can also choose to travel by land, but you may find it takes too much time. There are buses from Ho Chi Minh City (Vietnam) to Phnom Penh (Cambodia’s capital), for example, which take about 7 hours.

Poipet (Cambodia) – Aranya Prathet (Thailand) port on the Cambodian/Thai border is the most popular ferry for tourists on this route. The journey takes about 6–9 hours.

The Best Southeast Asia Tour for First-timers

What Are the Visa and Entry Requirements?

Thailand, Cambodia, and Vietnam all have relaxed entry policies. Whether you are vaccinated or not, you can enter for traveling without quarantine. Check out more on our 10+ Asia Countries Open for Tourism without Quarantine in 2022.

For visas, Thailand allows visa-free entry from 64 countries, including Australia, Austria, Canada, France, Germany, Norway, the USA, and the UK. (If you do not qualify for the visa-free policy, you will need to apply for a visa to visit Thailand.)

Vietnam allows visa-free entry from 22 countries including the UK, France, Italy, and Germany. If you're from the US, Canada, Australia, or about 80 other countries not on the list for visa-free entry, the most convenient way to enter is to apply for an e-visa online.

However, Cambodia requires a tourist visa, which can either be obtained online, or when you arrive at Phnom Penh or Siem Reap Airport. >>> How to Apply for a Cambodia Visa

Best Times to Visit

Thailand, Cambodia, and Vietnam enjoy similar climates because of their close proximity. November to February is the best time to visit with the most sunny and dry weather. Hotel and flight prices rise accordingly however.

One of the busiest times is around Christmas/New Year holiday, hotels and flights are easily booked up. Due to the high demand, you’re suggested to prepare your tour at least 3 months in advance. Let us know your interests and requirements, and we’ll take care of everything. 

June to October is the rainy season in most parts of Southeast Asia. It may cause some discomfort and inconvenience, but lower prices and smaller crowds are the rewards. 

See more on our Best Times to visit Southeast Asia, Worst Times, Rainy Season...

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