18-Day South East Asia Tours - Unique 18 Days tours to South East Asia

Accommodations

BudgetSimple stays with essential amenities. Typically guesthouses, hostels or hotels rated below 3 stars — clean, no-frills, and great for value-conscious travelers.
Mid-rangeComfortable and reliable 3-star stays. Expect private rooms, en-suite bathrooms, and solid amenities — a great balance between comfort and cost.
PremiumUpscale 4-5 star hotels and lodges. Enjoy high-end service, refined comfort, and premium locations — ideal for travelers seeking extra indulgence.

Thai Intro - 18 days

(273 reviews )

No booking fees

Best price guaranteed

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!

AdventureSnorkeling

Tour Type

Group Tour

Accommodation

Bungalow, Guest House

Age Range

18-55 yrs

Operated in

english

Destinations

Chiang Mai, Bangkok, Koh Phangan

Chiang Mai, Bangkok, Koh Phangan, Koh Phi Phi, Phi Phi Islands, Khao Sok National Park

Duration18 days

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Journeys: Discover Southeast Asia - 18 days

(12 reviews )

No booking fees

Best price guaranteed

For my first time with a group tour I feel I really lucked out. The trip was packed with fun moments inspiring moments and , impactful learning moments. The trip of a lifetime. Over and above what I expected. Souvann the CEO was the icing on the cake. Again thanks to Souvann and Gadventures for a wonderful trip.

Cultural, religious and historic sites

Tour Type

Small Group Tour

Accommodation

Hotel, Resort, Villa

Age Range

12-100 yrs

Operated in

english

Destinations

Siem Reap, Bangkok, Hanoi, Ho Ch

Siem Reap, Bangkok, Hanoi, Ho Chi Minh City, Phnom Penh, Chiang Mai, Luang Prabang, Halong Bay

Duration18 days

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Bali & Beyond - 18 days

(64 reviews )

No booking fees

Best price guaranteed

Even though my English isn't the best, the tour was a great experience thanks to Song, and hopefully he stays the way he is. Song, have fun in Thailand.

Beach

Tour Type

Group Tour

Accommodation

Hotel, Bungalow, Resort

Age Range

18-40 yrs

Operated in

english

Destinations

Canggu, Labuan Bajo, Lombok, Sum

Canggu, Labuan Bajo, Lombok, Sumbawa, Moyo Island, Satonda Island, Komodo Islands, Ubud, Tegalalang, Gili Islands

Duration18 days

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Heritage Line of Vietnam and Cambodia I Top 2025/26 - 18 days

(9 reviews )

Trip customizable

Best price guaranteed

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

Tour Type

Small Group Tour

Accommodation

Hotel

Age Range

1-90 yrs

Operated in

chinese, english, french, german, italian, spanish

Destinations

Hanoi, Ho Chi Minh City, Sapa, H

Hanoi, Ho Chi Minh City, Sapa, Halong Bay, Mekong Delta, Hoi An, My Son Sanctuary, Cu Chi Tunnels, Phnom Penh, Siem Reap, Angkor Thom, Ha Long Bay, Lao Chai, Fansipan, Da Nang

Duration18 days

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Bali & Sumatra Adventure - 18 days

(2 reviews )

No booking fees

Best price guaranteed

I really recommend doing the tour and visiting Sumatra. The country is just amazing and has a unique nature.

BeachSurfing, kitesurfing etc.

Tour Type

Group Tour

Accommodation

Hotel, Hut

Age Range

18-40 yrs

Operated in

english

Destinations

Medan, Gili Trawangan, Canggu, U

Medan, Gili Trawangan, Canggu, Ubud, Bukit Lawang, Padang

Duration18 days

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Best of Vietnam & Cambodia - 18 days

No booking fees

Best price guaranteed

Experience the magic of Southeast Asia on the 'Best of Vietnam & Cambodia' tour, an 18-day journey that blends vibrant city life with ancient wonders. Starting in Hanoi and ending in Bangkok, this easy-paced trip leads you from the dramatic limestone karsts of Ha Long Bay to the imperial legacy of Hue and the old-world charm of Hoi An. In Cambodia, uncover the bustling streets of Phnom Penh and the awe-inspiring temples of Angkor. With comfortable accommodation, included meals, and seamless transport, this local culture trip goes beyond the tourist path, drawing you into the heart and soul of both countries. The tour’s unique highlight? Intimate experiences in less-crowded locales, ensuring a more personal connection to the region’s rich history and culture.

Local cultureCity sightseeing

Tour Type

Small Group Tour

Accommodation

Hotel, Sleeper Train

Age Range

15-99 yrs

Operated in

english

Destinations

Hanoi, Bangkok, Ho Chi Minh City

Hanoi, Bangkok, Ho Chi Minh City, Phnom Penh, Battambang, Siem Reap, Angkor Wat, Halong Bay, Hue, Hoi An

Duration18 days

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Bangkok, Beach & Chiang Mai - 18 days

No booking fees

Best price guaranteed

Imagine a trip where Thai culture and island bliss meet—this 18-day group tour does just that. Young travelers (18–39) will dive into Bangkok’s energy, then journey to the tranquil Phi Phi Islands, lively Koh Phangan, and stunning Phuket. In Chiang Mai, trek to a hill tribe homestay, try bamboo rafting, and visit an ethical elephant sanctuary. Float on Khao Sok’s serene lake in a bungalow, explore local markets, and unwind on sun-kissed beaches. What makes this trip special is the unique mix of cultural exploration and immersive outdoor experiences, ensuring you enjoy Thailand’s best from city to sea.

Explorer

Tour Type

Group Tour

Accommodation

Bungalow, Guest House, Home-stay, Hotel, Hut, Resort

Age Range

18-49 yrs

Operated in

english

Destinations

Chiang Mai, Bangkok, Koh Phi Phi

Chiang Mai, Bangkok, Koh Phi Phi, Phuket, Khao Sok, Koh Phayam

Duration18 days

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Sumatra to Nusa Lembongan: Wild Islands & Zen Beaches - 18 days

No booking fees

Best price guaranteed

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.

Explorer

Tour Type

Small Group Tour

Accommodation

Camping, Guest House, Home-stay, Hostel, Hotel, Tent

Age Range

18-39 yrs

Operated in

english

Destinations

Bali, Medan, Bulian, Kintamani

Bali, Medan, Bulian, Kintamani, Ubud, Nusa Lembongan, Bukit Lawang, Gunung Leuser National Park, Canggu

Duration18 days

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Ultimate Philippines Island Hopping - 18 days

No booking fees

Best price guaranteed

Imagine 18 days in the Philippines, where every sunrise brings a new postcard-perfect beach or hidden gem. The "Ultimate Philippines Island Hopping" tour whisks adventurous young adults from Cebu to El Nido, stopping at iconic spots like Moalboal, Bohol, Port Barton, and beyond. Savor local cuisine, dive into sparkling seas on snorkeling excursions, chase waterfalls, and relax on powdery sands as you island-hop through the archipelago. Included flights and handpicked stays make it easy to focus on the fun—from sunset swims to exploring vibrant towns. This group trip is all about lively camaraderie and authentic experiences, tailored for those who crave both relaxation and action. The highlight? Access to the Philippines’ best beaches and lesser-known treasures, perfectly packaged for a seamless, immersive adventure.

City sightseeing

Tour Type

Group Tour

Accommodation

Camping, Hotel, Hut, Resort

Age Range

18-35 yrs

Operated in

english

Destinations

Coron, El Nido, Cebu, Puerto Pri

Coron, El Nido, Cebu, Puerto Princesa, Port Barton, Moalboal, Bohol, Panglao, Boracay

Duration18 days

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Best of Vietnam, Laos & Cambodia Tour - 18 days

Trip customizable

Best price guaranteed

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

Tour Type

Small Group Tour

Accommodation

Hotel

Age Range

35-75 yrs

Operated in

english

Destinations

Siem Reap, Vientiane, Da Nang, C

Siem Reap, Vientiane, Da Nang, Cu Chi Tunnels, Ho Chi Minh City, Can Tho, Chau Doc, Phnom Penh, Bantaey Meanchay, Luang Prabang, Hanoi, Lan Ha Bay, Hoi An

Duration18 days

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South East Asia 18-Day Tours and Trips

The Best 18-day Trips in South East Asia with 360 Reviews

The Best 18-day Trips in South East Asia with 360 Reviews

Thai Intro - 18 days

Journeys: Discover Southeast Asia - 18 days

Bali & Beyond - 18 days

Heritage Line of Vietnam and Cambodia I Top 2025/26 - 18 days

Bali & Sumatra Adventure - 18 days

Best of Vietnam & Cambodia - 18 days

Bangkok, Beach & Chiang Mai - 18 days

Sumatra to Nusa Lembongan: Wild Islands & Zen Beaches - 18 days

Ultimate Philippines Island Hopping - 18 days

Best of Vietnam, Laos & Cambodia Tour - 18 days

Europe

Asia

South America

Africa

North America

Oceania

Polar

Food, wine, events and nightlife

Adventure and sport

Wildlife, landscapes and nature

Boat tours, water sports and marine wildlife

Sightseeing, attractions, culture and history

Air tours, road trips and transfers

Beach, romance, getaways and relaxation

Special interests and hobbies

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South East Asia 18-Day Tours and Trips

The Best 18-day Trips in South East Asia with 360 Reviews

The Best 18-day Trips in South East Asia with 360 Reviews