All South East Asia 18-Day Tours and Trips
The Best 18-day Trips in South East Asia with 341 Reviews
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Best of Vietnam & Cambodia - 18 days
Take an unforgettable adventure through two of the most colourful yet contrasting cultures in South East Asia. Starting off in Vietnam, you’ll cruise through dramatic karst scenery on a boat tour of Ha Long Bay, step back into the world of the country's last emperors in Hue, soak up the old-world charm of Hoi An and experience the energy of Ho Chi Minh City. In Cambodia, discover the country's fascinating history and culture in Phnom Penh's heaving streets and the temples of Angkor. This is a journey that draws you away from the crowds and into heart and soul of a captivating region.
Local cultureCity sightseeing
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Journeys: Discover Southeast Asia - 18 days
5
This trip was a real eye opener into a very different way of life. It was very educational. We enjoyed the perspective of the local people when it came to past issues i.e, the war in Vietnam, the genocide in Cambodia. The group size was wonderful and we got to know each other very well.
Cultural, religious and historic sites
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Best of Vietnam, Laos & Cambodia Tour | Small‑group Highlights Experience - 18 days
Experience the best of Indochina as you explore the borders of Vietnam, Laos, and Cambodia on our premium small-group Indochina tour. This carefully crafted journey takes you to the best tourist attractions of these vibrant countries with a luxurious 5-star cruise through the breathtaking Halong Bay. Immerse yourself in the region’s rich culture and history as you visit the iconic Cu Chi Tunnels, witness the colorful floating markets in Mekong Delta, and explore the awe-inspiring temple complex of Angkor Wat.
From the moment you begin your journey, we ensure a seamless and stress-free travel experience. Our small group tours are designed for just 16 passengers, allowing us to provide a personal touch and exceptional service. We’ve thought of everything to make your trip extraordinary, from premium hotels in central locations to expert local tour guides who will enrich your adventure with insider knowledge.
To make your journey even more comfortable, we offer a complimentary one-way chauffeur service from your home to the airport, so you can start your trip relaxed and refreshed, without the hassle of arranging transportation or battling traffic. Our commitment to a world-class experience extends throughout the entire trip, with 24/7 local assistance and travel guidance, ensuring you have support every step of the way.
With Tweet World Travel, your adventure begins with a warm Meet-and-Greet Welcome Service by a local guide at the airport, and with guaranteed departures from just two guests, you’ll experience Indochina like never before. Don’t miss out on this unique opportunity to explore some of the most incredible destinations in the world!
Cultural, religious and historic sites
From the Temples of Angkor to the Mekong Delta & The Imperial Cities (port-to-port cruise) - 18 days
Prolong your stay with a 7-day post-cruise program and discover the essential sites in two Vietnamese provinces formerly known as Annam and Tonkin. Visit the capital, Hanoi, as well as thousand-year-old pagodas, lakes and historical monuments. Set out on an unforgettable cruise on the legendary Halong Bay among the fantastically formed islands, crags, and cliffs.
CruiseExplorer
Vietnam, Cambodia & Northern Laos - 18 days
Embark on this 18-day tour of Vietnam, Cambodia, and Northern Laos. Discover Hanoi’s key sites, cruise Halong Bay, and explore Hue’s imperial tombs and Citadel. Wander the ancient streets of Hoi An, explore Cu Chi Tunnels, and navigate the Mekong Delta. In Phnom Penh, Cambodia, visit the Royal Palace and museums before travelling to Siem Reap’s Angkor temples. Fly to Luang Prabang to explore temples, markets, and the Mekong River, visit Kuang Si Waterfall and Hmong villages, then finish in Vientiane with its landmarks and riverside.
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Vietnam, Cambodia & Laos Discovery - 18 days
PARTIALLY GUIDED TOUR: Discover the best of Vietnam, Cambodia and Laos on this 18-day group tour travelling from Hanoi to Luang Prabang. Explore the Vietnamese capital on a guided tour, embark on an overnight cruise at Halong Bay and see the imperial city of Hue. Learn to cook Vietnamese dishes in Hoi An, explore Ho Chi Minh City and take a day trip to the Mekong Delta. In Cambodia, discover Phnom Penh, Siem Reap and the temples of Angkor, and end in Laos, with four days to explore the city and its surroundings.
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Vietnam Thailand Attractions in - 18 days
Join us on a wonderful 18-day tour from Vietnam to Thailand, exploring fascinating history, culture, natural wonders and vibrancy of cityscapes. Begin your journey in North Vietnam with visits to Hanoi, Ninh Binh, and Ha Long Bay. Then, head south and visit Hue's Imperial City, Hoi An streets, and finally Cu Chi Tunnels in Ho Chi Minh City.
Your tour will take you to Thailand next. Visit Bangkok’s temples and floating markets, and enjoy tuk-tuk food tours. Head to serene Doi Suthep and Doi Inthanon National Park, where you can interact with elephants at a local elephant sanctuary.
This tour package is designed to take you through rich Southeast Asian traditions, its picturesque landscapes, and diverse culture.
See the itinerary section for further details.
CruiseLocal boat rides
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Thai Intro - 18 days
5
I went on the 18 day Thailand intro and had the trip of a lifetime! Everything from even before we arrived was very organised which led to a completely stress free trip. Our group leader Zoe was amazing, bringing such positive vibes from day 1, and provided complete support throughout the trip and for onward travel. Our local guide Aei-ki was fantastic and provided cultural knowledge as we went round. Would highly recommend Intro travel and this amazing country!
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Bali & Beyond - 18 days
5
Song is the best tour guide I have ever had! He was so funny! So caring looked after us all so well always had good recommendations for places to go! Organized extra activities that the group wanted to do out of the tour checked we all had safe travels after the tour and got back from gili t island with booked boats back to Canggu or wherever we might have been going, it was my friends birthday whilst I was on the tour with her and he helped me organize a cake for the last night! Honestly could not be happier what a genuinely amazing nice man! I honestly can’t say enough how good he was!
Beach
Island Symphony: Philippines Escape - 18 days
Embark on an exhilarating 18-day odyssey through the Philippines with our meticulously curated itinerary, "Island Symphony." Commencing in Manila, immerse yourself in the vibrant capital before venturing into the heart of natural wonders and cultural treasures. Experience the heart-pounding thrill of Pagsanjan Falls and the tranquility of Banaue's rice terraces, setting the stage for an extraordinary journey.
Fly to Bohol for an encounter with the iconic Chocolate Hills, followed by a shared lunch cruise along the Loboc River. Dive into the underwater wonders of Balicasag Island on an exclusive tour before transferring to Cebu, where Moalboal awaits with a private island-hopping adventure to Kawasan Falls.
El Nido unveils its hidden gems with shared Island Hopping Tours A and C, revealing secluded lagoons and pristine beaches. Transition to the powdery shores of Boracay for leisure days filled with beachfront bliss, vibrant market explorations, and thrilling water activities.
As the symphony of experiences unfolds, bid farewell to El Nido and fly to Boracay for more leisure days by the sea. Conclude your journey with shared transfers to Caticlan Airport, connecting seamlessly to Manila for your international departure. "Island Symphony" orchestrates an unforgettable harmony of cultural immersion, natural exploration, and tranquil leisure, ensuring each note resonates with the excitement of an unparalleled adventure.
Trekking and Hiking
Thailand Highlights Travel Pass (Clockwise) - 18 days
Discover the ultimate adventure through Thailand's rich cultural tapestry with breathtaking visits to Bangkok, Chiang Mai, and Phuket. This immersive travel experience offers unique activities like exploring ancient temples, thrilling elephant sanctuaries, and serene island hopping. With seamless transport, guided tours, and flexible schedules, this trip caters to both spirited explorers and relaxed vacationers. Unveil the hidden gems and vibrant nightlife of Thailand, creating memories that will last a lifetime. Ideal for culture seekers and adventure enthusiasts alike!
Bicycle toursBeachSnorkeling
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Heritage Line of Vietnam and Cambodia I Top 2025/26 - 18 days
5
We have just come back from 2 incredible weeks in Vietnam and Cambodia, all arranged by the travel company. We had an incredibly
memorable holiday and can’t thank Chloe enough for arranging such an interesting trip and also organising everything so perfectly. Our guides
were all fantastic. We learnt so much more about how incredible Vietnam is
thanks to all the information and personal experiences they shared. Our travel expert booked us into some lovely hotels and all of our transport
arrangements worked perfectly. Highly recommended
Local cultureCruise
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Bali & Sumatra Adventure - 18 days
5
I really recommend doing the tour and visiting Sumatra. The country is just amazing and has a unique nature.
BeachSurfing, kitesurfing etc.
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Sumatra to Nusa Lembongan: Wild Islands & Zen Beaches - 18 days
This isn’t your average island getaway. Start deep in Sumatra’s jungle where you’ll trek in search of wild orangutans, tube down jungle rivers, and sleep under the stars. Then swap boots for boards in Bali, with surf lessons in Canggu, sunrise hikes up Mount Batur, and homestay vibes in a traditional Balinese village. Cap it all off in dreamy Nusa Lembongan—think white sand, dramatic cliffs, and sunsets that hit different. Wild to chill and everything in between, this trip brings the full Indo experience.
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