10 Best South East Asia Multiday Tours in September 2026

Thailand and Laos Discovery Tour - September 2026

Trip customizable

Best price guaranteed

Embark on a two-week journey to discover the wonders of northern Thailand and the enchanting beauty of Laos. This Thailand and Laos discovery tour takes you from the lush landscapes of Thailand to the captivating culture and ancient wonders of Laos, where you’ll explore everything from luxury Mekong River cruises and Hmong villages to mysterious archaeological sites, ornate temples, and breathtaking waterfalls. Travel to Thailand with a flight to Chiang Rai, where you’ll board the Luang Say Cruise at Huay Xay pier for a scenic journey down the mighty Mekong River to Pakbeng. Along the way, you can observe some of the best tourist attractions in Asia and the local life. Continue your exploration with a visit to the Royal Palace Museum and a walking tour in Luang Prabang, where you’ll uncover hidden gems as you wander through tranquil back lanes leading to the stunning Wat Xiengthong. Afterward, head to the Plain of Jars in Xieng Khuang, where you can marvel at the mysterious archaeological site. The journey also takes you to the Phatang Mountain viewpoint to enjoy the panoramic views of the stunning limestone karst scenery—just one of many top destinations in Thailand waiting to be discovered. Enjoy a seamless travel experience with our complimentary chauffer-drive service, beginning your adventure relaxed and refreshed. Our small group tours, capped at 16 guests, ensure an intimate and personalized experience. We offer a guaranteed departure with as few as two guests, so you don’t have to worry about group size. From 24/7 local assistance and travel guidance to a meet-and-greet airport service with a local tour guide, we’re committed to delivering a world-class experience from start to finish.

Beach

Tour Type

Small Group Tour

Accommodation

Hotel

Age Range

35-75 yrs

Operated in

english

Destinations

Chiang Rai, Pakse, Vientiane, Kh

Chiang Rai, Pakse, Vientiane, Khong Island, Don Deng, Pakbeng, Luang Prabang, Hmong, Xieng Khouang, Vang Vieng

Duration15 days

From

USD 3,802

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Cambodia & The Thai Islands – East Coast - September 2026

10% OFF TODAY

Super Sales

Cambodia & The Thai Islands – East Coast - September 2026

(8 reviews )

No booking fees

Best price guaranteed

Overall, my experience with GAdventures has been brilliant. They have very knowledgable and enthusiastic CEOs who cannot do enough to make sure that you have a great experience!

Explorer

Tour Type

Small Group Tour

Accommodation

Hotel, Resort

Age Range

12-100 yrs

Operated in

english

Destinations

Ho Chi Minh City, Bangkok, Koh T

Ho Chi Minh City, Bangkok, Koh Tao, Koh Pha Ngan, Koh Samui, Phnom Penh, Siem Reap

10% OFF TODAY

Duration16 days

From

USD 2,629

USD 2,366

Saving

USD 263

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11% OFF TODAY

Kingdoms of Southeast Asia Vietnam, Cambodia, Laos and Thailand - September 2026

4.9

(28 reviews )

No booking fees

Best price guaranteed

The people in my group. We all came together to help each other. Great experience

Local culture

Tour Type

Group Tour

Accommodation

Hotel, Resort

Age Range

1-99 yrs

Operated in

english

Destinations

Hanoi, Bangkok, Ho Chi Minh City

Hanoi, Bangkok, Ho Chi Minh City, Siem Reap, Luang Prabang, Ha Long Bay, Hoi An

11% OFF TODAY

Duration19 days

From

USD 3,799

USD 3,399

Saving

USD 400

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8% OFF TODAY

Thailand and the Temples of Angkor - September 2026

(3 reviews )

No booking fees

Best price guaranteed

Great itinerary, saw all major temples in Thailand and Cambodia.

Cultural, religious and historic sites

Tour Type

Group Tour

Accommodation

Hotel, Resort

Age Range

5-99 yrs

Operated in

english

Destinations

Siem Reap, Bangkok, Chiang Mai

Siem Reap, Bangkok, Chiang Mai, Angkor Wat, Peak Sneng Village, Kanchanaburi, Sukhothai, Wat Suan Dok

8% OFF TODAY

Duration14 days

From

USD 6,015

USD 5,533

Saving

USD 483

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From the Mekong Delta to the Temples of Angkor & The Imperial Cities (port-to-port cruise) - September 2026

No booking fees

Best price guaranteed

This 7-day pre-cruise program lets you discover 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. You will also visit the essential sites in two Vietnamese provinces formerly known as Annam and Tonkin.

Cruise

Tour Type

Cruise Tour

Accommodation

Hotel, Ship Cabin

Age Range

18-99 yrs

Operated in

english

Destinations

Hanoi, Siem Reap, Sa Dec, Phnom

Hanoi, Siem Reap, Sa Dec, Phnom Penh, Kampong Chhnang, Tonle Sap Lake, Halong Bay, Hue, Hoi An, Ho Chi Minh City

Duration17 days

From

USD 5,778

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40% OFF TODAY

Best of Thailand & Vietnam (4 Star Hotels) - September 2026

No booking fees

Best price guaranteed

Immerse in the stunning beauty and charming culture of Vietnam and Thailand in this 15 day journey packed with cultural discovery, picturesque scenery, ancient history and mouth-watering cuisines. Sail the serene waters of UNESCO World Heritage-listed Halong Bay. Explore the imperial cities, ancient wonders, and rich war history of Vietnam. Kick back and relax with two domestic flights through Vietnam to save on transit time before beginning your Thailand journey in the vibrant Bangkok. Prepare to be amazed as you step back in time in the ancient kingdom of Sukhothai and Ayutthaya and take in the lush scenery of Northern Thailand. Complete your journey in awe at an elephant sanctuary in Chiang Mai.

City sightseeing

Tour Type

Group Tour

Accommodation

Hotel, Resort

Age Range

18-75 yrs

Operated in

english

Destinations

Ho Chi Minh City, Bangkok, Halon

Ho Chi Minh City, Bangkok, Halong Bay, Hoi An, Hue, Kanchanaburi, Phitsanulok, Chiang Rai, Chiang Mai, Hanoi

40% OFF TODAY

Duration15 days

From

USD 4,092

USD 2,455

Saving

USD 1,637

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From the Mekong Delta to Siem Reap (port-to-port cruise) - September 2026

No booking fees

Best price guaranteed

From the heights of the Himalayas to the southern coasts of the South China Sea, winding over 2,700 miles, the Mekong is much more than just irrigation for Indochina—everywhere it flows, it fascinates men and shapes their lives. Come take an expedition on this grand and plentiful “water snake,” from Ho Chi Minh City, still largely influenced by the French colonial days, to Phnom Penh, then Tonle river, following the footsteps of Henri Mouhot. Our meditative trip takes you along the Mekong River on board a ship combining charm and colonial-style comfort.

CruiseExplorer

Tour Type

Cruise Tour

Accommodation

Hotel, Ship Cabin

Age Range

18-79 yrs

Operated in

english

Destinations

Ho Chi Minh City, Mekong Delta

Ho Chi Minh City, Mekong Delta, Angkor Wat, Sa Dec, Chau Doc, Phnom Penh, Kampong Chhnang, Tonle Sap Lake, Siem Reap

Duration9 days

From

USD 2,413

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Super Sales

Thailand Grand Tour & Cambodia Package, Small Group Tour (other Languages) - September 2026

Trip customizable

Best price guaranteed

Join this memorable thirteen-day tour exploring two of the oldest kingdoms in Southeast Asia: Thailand and Cambodia. Start your adventure from Chiang Mai, the beautiful former capital of the Lanna kingdom, mingle with the locals in the night market, and be amazed by the beauty of the ancient Buddhist temples before continuing to Sukhothai and Ayutthaya, two UNESCO World Heritage Sites that both served as capitals of Siam. Ends this unforgettable trip in Cambodia, the Kingdom of wonder, a fascinating mix of culture and majestic heritage and ancient and modern worlds collide to create unforgettable adventures. Marvel before its glorious temples, matched by only a few select spots on earth. This tour is operated in a small group of up to 8 passengers.

Art and architecture

Tour Type

Group Tour

Accommodation

Hotel, Resort

Age Range

6-99 yrs

Operated in

italian, french, spanish, german

Destinations

Chiang Mai, Siem Reap, Bangkok

Chiang Mai, Siem Reap, Bangkok, Kanchanaburi, Chiang Rai, Sukhothai, Ayutthaya

Duration13 days

From

USD 2,566

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Vietnam and Cambodia Uncovered - September 2026

4.4

(7 reviews )

No booking fees

Best price guaranteed

Itinerary was very good. It included experiencing scenic Vietnam and tasting local foods. Learned history of Vietnam and Cambodia. It included sightseeing of Angkor temples that are UNESCO sights.

Sightseeing Tours

Tour Type

Group Tour

Accommodation

Hotel, Lodge

Age Range

5-99 yrs

Operated in

english

Destinations

Hanoi, Phnom Penh, Mekong Delta

Hanoi, Phnom Penh, Mekong Delta, Cu Chi Tunnels, Siem Reap, Angkor Ban, Peak Sneng Village, Halong Bay, Hoi An, Hue, Ho Chi Minh City

Duration17 days

From

USD 5,850

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Picturesque Solo Vietnam And Cambodia Tour - September 2026

Trip customizable

Best price guaranteed

Embark on an unforgettable journey through Vietnam and Cambodia, where ancient wonders and vibrant culture converge in Southeast Asia’s most iconic destinations. This immersive tour is perfect for curious travelers seeking a blend of historic grandeur, breathtaking scenery, and authentic local experiences. Your adventure begins in Hanoi, Vietnam’s atmospheric capital—a city where centuries-old temples stand alongside buzzing markets and French colonial architecture. On a guided tour, step into Vietnam’s complex past at the Ho Chi Minh Complex, home to the Presidential Palace, Ho Chi Minh’s Mausoleum, and the traditional stilt house where he once lived. Continue to Tran Quoc Pagoda, the city’s oldest Buddhist temple, set on the peaceful shores of West Lake, and soak in the spiritual ambiance that permeates this timeless site. From Hanoi, set out for a once-in-a-lifetime experience on the emerald waters of Halong Bay, a UNESCO World Heritage Site known for its towering limestone karsts and mystical islets. Cruise aboard a traditional Vietnamese junk boat, enjoy fresh seafood, visit hidden caves, and perhaps kayak or swim in the tranquil coves—surrounded by one of the world’s most iconic seascapes. Next, fly to Siem Reap, Cambodia, a charming resort town that serves as the gateway to one of the greatest architectural achievements in human history. Here, you’ll explore the awe-inspiring Temples of Angkor, an ancient city that was once the capital of the Khmer Empire. Wander among the massive stone faces of Bayon Temple, stand in awe beneath the sprawling roots overtaking Ta Prohm, and witness the sunrise over the legendary Angkor Wat—the world’s largest religious monument and a symbol of Cambodia's soul. Along the way, enjoy small-group intimacy, expert local guides, and curated cultural encounters that bring each destination to life. Whether you're navigating Hanoi’s Old Quarter by cyclo, sailing through misty bays, or uncovering ancient temples wrapped in jungle, this journey will stay with you forever. This is a Solo Tour You don't pay single supplement and get a room for yourself!

Cultural, religious and historic sites

Tour Type

Small Group Tour

Accommodation

Hotel, Resort

Age Range

8-99 yrs

Operated in

english

Destinations

Hanoi, Siem Reap

Duration6 days

From

USD 1,627

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The Mekong in a different way - Between adventure and must-see sites (port-to-port cruise) - September 2026

No booking fees

Best price guaranteed

We are thrilled to present our latest program, designed to combine exploration, cultural immersion, and light activities for a memorable cruising experience on-board the Toum Tiou 2. Our charming vessel offers personalized service in an intimate environment, perfect for small groups who seek an authentic and dynamic Mekong River journey. Our itinerary includes a range of activities like biking, kayaking, sampan rides and walking tours that provide opportunities to discover the hidden treasures of the Mekong River, including traditional village visits and climbing the stunning Udong Hill. Moreover, we'll take you on a motor & rowing boat tour of the magnificent Tra Su Forest, where you'll witness incredible flora and fauna of this beautiful natural environment. Experience the perfect balance of cultural immersion and light adventure, while enjoying the authentic Mekong River charm. With an emphasis on personalized service, cultural exploration, and a touch of adventure, our program promises to deliver an unforgettable cruising experience and makes a perfect match for the Toum Tiou 2.

Cruise

Tour Type

Cruise Tour

Accommodation

Ship Cabin, Hotel

Age Range

18-99 yrs

Operated in

english

Destinations

Siem Reap, Ho Chi Minh City, Kam

Siem Reap, Ho Chi Minh City, Kampong Chhnang, Phnom Penh, Chau Doc, Cai Be

Duration9 days

From

USD 1,939

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From the Temples of Angkor to the Mekong Delta & Hanoi and Halong Bay (port-to-port cruise) - September 2026

No booking fees

Best price guaranteed

Cast off on a once-in-a-lifetime adventure on the legendary river that begins in the mountains of Tibet and meanders through no less than six countries. The Mekong traces the authentic, profound, and mesmerizing history of Vietnam and Cambodia along its riverbanks. You'll finish your extraordinary vacation in Indochina with a discovery of Hanoï, the Vietnamese capital, and on an unforgettable cruise on the legendary Halong Bay among the fantastically formed islands, crags, and cliffs.

CruiseExplorer

Tour Type

Cruise Tour

Accommodation

Hotel, Ship Cabin

Age Range

18-79 yrs

Operated in

english

Destinations

Hanoi, Siem Reap, Halong Bay, Ho

Hanoi, Siem Reap, Halong Bay, Ho Chi Minh City, Tonle Sap Lake, Kampong Tralach, Phnom Penh, Sa Dec, Cai Be

Duration14 days

From

USD 4,653

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The Mekong in a different way - Between adventure and must-seesites (port-to-port cruise) - September 2026

No booking fees

Best price guaranteed

Cruise

Tour Type

Cruise Tour

Accommodation

Ship Cabin, Hotel

Age Range

18-99 yrs

Operated in

english

Destinations

Siem Reap, Ho Chi Minh City, Cai

Siem Reap, Ho Chi Minh City, Cai Be, Sa Dec, Phnom Penh, Kâmpóng Trâlach, Koh Chen

Duration9 days

From

USD 1,939

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From the Mekong Delta to the Temples of Angkor & Hanoi and Halong Bay (port-to-port cruise) - September 2026

No booking fees

Best price guaranteed

You'll begin your extraordinary vacation in Indochina with a discovery of Hanoï, the Vietnamese capital, and on an unforgettable cruise on the legendary Halong Bay among the fantastically formed islands, crags, and cliffs. Then, cast off on a once-in-a-lifetime adventure on the legendary river that begins in the mountains of Tibet and meanders through no less than six countries. The Mekong traces the authentic, profound, and mesmerizing history of Vietnam and Cambodia along its riverbanks.

Cruise

Tour Type

Cruise Tour

Accommodation

Hotel, Ship Cabin

Age Range

18-79 yrs

Operated in

english

Destinations

Hanoi, Siem Reap, Kampong Chhnan

Hanoi, Siem Reap, Kampong Chhnang, Tonle Sap Lake, Halong Bay, Ho Chi Minh City, Cai Be, Sa Dec, Phnom Penh

Duration14 days

From

USD 4,653

View Tour

All South East Asia Tours in September 2026

Page 10 of 962 Trips in South East Asia during September 2026 with 5,093 Reviews

Thailand and Laos Discovery Tour - September 2026

Cambodia & The Thai Islands – East Coast - September 2026

Kingdoms of Southeast Asia Vietnam, Cambodia, Laos and Thailand - September 2026

Thailand and the Temples of Angkor - September 2026

From the Mekong Delta to the Temples of Angkor & The Imperial Cities (port-to-port cruise) - September 2026

Best of Thailand & Vietnam (4 Star Hotels) - September 2026

From the Mekong Delta to Siem Reap (port-to-port cruise) - September 2026

Thailand Grand Tour & Cambodia Package, Small Group Tour (other Languages) - September 2026

Page 10 of 962 Trips in South East Asia during September 2026 with 5,093 Reviews

Vietnam and Cambodia Uncovered - September 2026

Picturesque Solo Vietnam And Cambodia Tour - September 2026

The Mekong in a different way - Between adventure and must-see sites (port-to-port cruise) - September 2026

From the Temples of Angkor to the Mekong Delta & Hanoi and Halong Bay (port-to-port cruise) - September 2026

The Mekong in a different way - Between adventure and must-seesites (port-to-port cruise) - September 2026

From the Mekong Delta to the Temples of Angkor & Hanoi and Halong Bay (port-to-port cruise) - September 2026

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

All South East Asia Tours in September 2026

Page 10 of 962 Trips in South East Asia during September 2026 with 5,093 Reviews

Page 10 of 962 Trips in South East Asia during September 2026 with 5,093 Reviews