Content [Switch to sidebar]

21-day Combined Trip To Thailand Cambodia And Vietnam

There are trips you enjoy… and then there are journeys that quietly change you. This Thailand Cambodia Vietnam itinerary 21 days was exactly that for me. Over three unforgettable weeks in Southeast Asia, I wandered through Bangkok’s glittering temples at sunrise, stood speechless before the timeless beauty of Angkor Wat, and cruised between the limestone karsts of Halong Bay under a misty sky. Each border crossed brought new flavors, stories, and perspectives. In this detailed travelogue, I’m sharing my complete travel itinerary Thailand Cambodia Vietnam - with honest tips, cultural insights, and practical advice to help you design your own Thailand Cambodia Vietnam tour 21 days.

Day 1-2 : Bangkok, Thailand

• Stay in Royal Orchid Sheraton Riverside Hotel Bangkok
• Explore the Chao Phraya River and its klongs by long-tail boat.
• Visit Wat Arun at sunset.
• Discover the Grand Palace and admire the sacred Emerald Buddha.
• Walk through Wat Pho to marvel at the giant reclining Buddha.
• Step into history at Jim Thompson House and learn about Thailand’s silk heritage.
• Get dinner at Charmgang Bangkok

Landing in Bangkok felt like stepping straight into a wave of heat, color, and motion. After a long flight, I checked into my cozy hotel by the river and tried to fight the jet lag with a strong Thai iced tea-sweet, creamy, and just sharp enough to wake me up. Soon after, I set off on a thrilling long-tail boat ride along the Chao Phraya River and its winding klongs. As the boat sliced through the water, I watched floating wooden homes drift past and caught the soft scent of jasmine mixed with river mist. The first real highlight was Wat Arun, its porcelain-covered spires shimmering in the golden afternoon light. By evening, however, the calm gave way to Bangkok’s electrifying chaos: neon lights flickered on, street vendors called out as they stir-fried pad see ew, and the city hummed with an energy that felt impossible to resist.

The next morning, I headed to the spectacular Grand Palace, and immediately, I was dazzled. Emerald and gold spires pierced the sky while mythical guardians stood watch in glittering armor. Inside the complex, the revered Emerald Buddha sat serenely, its deep jade glow radiating calm despite the crowds. Just a short walk away, Wat Pho offered a completely different kind of awe. The massive 46-meter-long reclining Buddha seemed to stretch on forever. Later in the afternoon, I detoured to Jim Thompson House, where traditional teak houses and lush gardens contrasted beautifully with the city’s modern skyline, and the mysterious disappearance of the “silk king” added a touch of intrigue. As evening fell, I reflected on Bangkok’s unique mix of luxury and chaos while enjoying authentic Thai cuisine at a famous restaurant in the city center - it was absolutely worth it.

Day 3-5 : Kanchanaburi & Ayutthaya, Thailand

• Stay in Felix River Khwae Resort Kanchanaburi.
• Explore the Ayutthaya Historical Park by bicycle.
• Visit the Maeklong Railway Market and Damnoen Saduak Floating Market early in the morning to avoid crowds.
• Discover the Bridge over the River Kwai and ride part of the historic Death Railway.
• Get dinner at On's Thai Issan.

The third day began before sunrise at the vibrant Maeklong Railway Market, and the energy was instantly electric. As the train slowly approached, vendors calmly folded back their awnings and pulled baskets of chilies and tropical fruits just inches away from the tracks. Shortly after, I continued to the colorful Damnoen Saduak Floating Market, where long-tail boats glided along narrow canals and women in conical hats paddled by selling fresh coconut water and local snacks. In the afternoon, however, the mood shifted in Kanchanaburi. At the JEATH War Museum and the nearby Kanchanaburi War Cemetery, the stories of World War II were sobering and deeply moving. Walking across the historic Bridge over the River Kwai, I could almost feel the weight of the past, and the scenic ride on the Death Railway toward Nam Tok, with lush jungles rolling by, gently softened the atmosphere.

The following day, I traveled to Ayutthaya, once the glorious capital of Siam, and it truly felt like stepping back in time. First, I climbed the steep steps of Wat Phu Khao Thong, where panoramic views rewarded the effort. Then, at Wat Phra Si Sanphet, three iconic stupas stood proudly against the sky, while the enormous bronze Buddha inside Viharn Phra Mongkol Bopit radiated quiet majesty. Perhaps the most haunting sight was the open-air reclining Buddha at Wat Lokaya Sutha, weathered yet serene after centuries of history. As the sun began to set, I rented a bicycle and rode through the ancient ruins, which glowed orange in the fading light while birds chirped overhead, creating a peaceful contrast to the grandeur of the past.

Finally, a visit to Bang Pa-In Royal Palace, where Gothic, Chinese, and Thai architectural styles blended in a surprisingly harmonious way, added a touch of elegance to my Thailand Cambodia Vietnam itinerary 21 days, before returning to Bangkok, where a simple plate of Pad Thai perfectly closed this memorable chapter of the journey.

Day 6-7 : Hanoi, Vietnam

• Stay in the La Siesta Classic Ma May.
• Explore the Hoan Kiem Lake area at sunset and try authentic egg coffee nearby.
• Visit the Ho Chi Minh Mausoleum and Tran Quoc Pagoda for cultural highlights.
• Walk across Long Bien Bridge and browse Dong Xuan Market for local flavor.
• Get dinner at Old Hanoi Restaurant - a traditional restaurant in Hanoi and end the night with a show at the Thang Long Water Puppet Theatre.

Leaving Bangkok behind for the next chapter of my Thailand Cambodia Vietnam itinerary 21 days in Vietnam, I caught a morning flight that soon landed at Noi Bai International Airport. As the car drove toward the city center of Hanoi, the first thing that struck me was the endless sea of scooters flowing like a living river through the streets. In the evening, I wandered around Hoan Kiem Lake, where the calm water reflected city lights and local legends seemed to float in the air. At Cong Caphe, I tried egg coffee for the first time-thick, creamy, and surprisingly rich.

The next day began with a visit to the solemn exterior of the Ho Chi Minh Mausoleum, whose imposing structure contrasts sharply with the graceful yellow façade of the nearby Presidential Palace. Afterward, I headed to Tran Quoc Pagoda, standing serenely by West Lake, its red tower shimmering peacefully in the sunlight. To better understand the country’s diversity, I explored the Vietnam Museum of Ethnology, where artifacts and traditional house replicas beautifully represent Vietnam’s 54 ethnic groups. For lunch, a steaming bowl of pho bo delivered pure comfort-savory broth, tender beef, and fresh herbs in perfect harmony. Later in the afternoon, I walked across Long Bien Bridge, feeling its colonial-era charm, before diving into the vibrant chaos of Dong Xuan Market and the colorful lantern displays along Hang Ma Street. I paused at Bach Ma Temple, where incense filled the air, then slipped into a hidden café for a refreshing ca phe sua da. Finally, the evening ended at the Thang Long Water Puppet Theatre, where wooden puppets danced gracefully on water to traditional folk music-an art form so uniquely Vietnamese that it felt almost magical.

Day 8-9 : Ha Long Bay, Vietnam

• Stay on an overnight on Regina Royal Cruise in Ha Long Bay for a full experience of the limestone seascape.
• Explore the Sung Sot Cave and hike up Titov Island for panoramic views.
• Kayak through Luon Cave to discover hidden lagoons.
• Enjoy sunset cocktails on deck followed by a seafood dinner and squid fishing.

On day eight, I left Hanoi for a scenic drive to Ha Long Bay, where I boarded a traditional junk boat for an overnight cruise. Surrounded by dramatic limestone karsts rising from emerald waters, the landscape felt unreal. I explored Sung Sot Cave, hiked up Titov Island for panoramic views, swam in the bay, and enjoyed sunset cocktails followed by a fresh seafood dinner and squid fishing under the stars. The next morning began with Tai Chi on deck at sunrise. After breakfast, I kayaked through Luon Cave into a peaceful hidden lagoon before cruising back to port. By late afternoon, I returned to Hanoi and celebrated the experience with a glass of Bia Hoi on a tiny street-side stool—an unforgettable end to two magical days.

Day 10-11 : Hue, Vietnam

• Stay in Eldora Hotel.
• Explore the Perfume River by boat and visit Thien Mu Pagoda.
• Discover the royal tombs of Tomb of Tu Duc and Tomb of Khai Dinh.
• Get dinner at Madam Thu Restaurant.

On day ten of my Thailand Cambodia Vietnam 21-day tour, I took a short flight from Hanoi to Phu Bai International Airport, then transferred to my hotel in Hue. With a free afternoon ahead, I wandered through Dong Ba Market, where the scent of spices filled the air and colorful silk fabrics hung from every corner. There, I tasted my first bowl of Bun Bo Hue-rich, spicy beef noodles that instantly warmed both body and soul.

The following day, I cruised along the poetic Perfume River toward the iconic Thien Mu Pagoda, its seven-story tower rising gracefully above the water. Later, I explored the serene Tomb of Tu Duc. The place is very beautiful and poetic, especially in the late afternoon light when the sun goes through the trees. The atmosphere is calm, old, and full of charm. The buildings are well preserved and surrounded by ponds and green gardens. You can feel that King Tu Duc loved poetry and fine beauty, and that still shows today in his resting place.

Then, I visited Tomb of Khai Dinh. This is truly a must-visit destination in Hue. I would describe it as an artistic masterpiece - almost like a beautifully crafted fusion dish, where Eastern and European influences blend together in perfect harmony without feeling forced. The moment I stepped inside, I was genuinely amazed by the intricate details, vibrant colors, and thoughtful design. It felt incredibly lavish and impressive. You should definitely visit and experience it for yourself.

Day 12-13 : Hoi An, Vietnam

• Stay in Anantara Hoi An Resort.
• Explore the Hai Van Pass and Marble Mountains en route from Hue.
• Cycle through Tra Que Vegetable Village for a glimpse of rural life.
• Get dinner at Little Faifo restaurant.

On day twelve, I left Hue and drove south toward Hoi An, crossing the breathtaking Hai Van Pass. Mist rolled over the mountains while the ocean shimmered below, making the journey feel just as memorable as the destination. Along the way, I stopped at the Marble Mountains to explore hidden caves and peaceful pagodas tucked into the cliffs. By late afternoon, I arrived in Hoi An Ancient Town, where ochre houses, wooden facades, and the iconic Japanese Covered Bridge created a timeless atmosphere. It’s easily one of the best places in Vietnam for relaxed, scenic cycling, with peaceful lanes, rice fields, and a charming old-town atmosphere. As night fell, colorful lanterns reflected on the river, turning the town into pure magic.

The next day focused on flavors and countryside charm. In a local cooking class, I learned to prepare delicate White Rose dumplings and the famous Cao Lau, discovering the balance of herbs and textures that define Hoi An cuisine. Later, I cycled through the lush fields of Tra Que Vegetable Village, where the scent of fresh herbs filled the air. Finally, I ended the day at An Bang Beach, watching the sunset as gentle waves lapped against the shore.

Day 14-16 : Ho Chi Minh City & Mekong Delta, Vietnam

• Stay in Orchids Saigon Hotel.

• Explore the War Remnants Museum and Ben Thanh Market for history and local life.

• Cruise through the Mekong Delta in Ben Tre and visit Cai Rang Floating Market at sunrise.

• Get dinner at Ngon Restaurant.

The next day, I flew from central Vietnam to Ho Chi Minh City, still often called Saigon by locals. The city’s energy was immediate and intense. At the War Remnants Museum, the powerful exhibits were deeply moving, offering a sobering look into the country’s past. In contrast, the red-brick façade of Notre-Dame Cathedral Basilica of Saigon and the elegant interior of Saigon Central Post Office reflected French colonial charm. Later, I wandered through Ben Thanh Market, practicing my bargaining skills, before ending the night at a rooftop bar overlooking the glittering skyline.

The next morning, I headed into the lush waterways of the Mekong Delta, starting in Ben Tre. A small boat carried me along narrow canals lined with coconut palms, where I sampled coconut candy and honey tea at a local workshop. Gliding through shaded sampan canals felt peaceful and intimate, followed by a simple but delicious local lunch. By evening, I reached Can Tho and explored its lively night market.

At dawn on day sixteen, I visited Cai Rang Floating Market, where boats piled high with pineapples and vegetables advertised their goods on tall “cargo poles.” Starting the boat trip around 6 a.m. is ideal. A small boat for two costs about 500,000 VND. You can enjoy river specialties like coconut candy and dry noodles. Vendors are friendly, no pressure selling, and prices are reasonable for supporting local livelihoods. After stopping by a traditional noodle factory, I continued to Chau Doc. From Sam Mountain, I watched the sunset stretch toward the Cambodian border, the landscape glowing in soft gold.

Continuing from Chau Doc, I boarded a speedboat that sped along the Mekong River toward Phnom Penh. The border crossing took place right on the water, a surprisingly smooth and fascinating experience. As the skyline of Phnom Penh came into view, the riverside buzzed with life, marking the start of a new chapter in my Thailand Cambodia Vietnam itinerary 21 days.

Day 17-18 : Phnom Penh, Cambodia

• Stay in Pacific Hotel.
• Explore the Royal Palace and the National Museum of Cambodia for cultural insights.
• Visit Tuol Sleng Genocide Museum and Choeung Ek Genocidal Center to understand Cambodia’s recent history.
• Get dinner at Kabbas Restaurant.

Arriving in Phnom Penh felt like stepping into a city that moves at a slower, heavier rhythm. I visited the dazzling Royal Palace, where the Silver Pagoda shimmered under the afternoon sun, its floor inlaid with thousands of silver tiles. Tickets cost about $10 for foreigners, no advance booking was needed, the visit takes around 1–1.5 hours, and it’s best to bring a hat, light jacket, and comfortable shoes for walking under the sun. Just across the street, the National Museum of Cambodia showcased intricate Khmer sculptures and ancient artifacts that deepened my understanding of Cambodia’s rich heritage.

The following day carried a much heavier emotional weight. At the former prison of Tuol Sleng Genocide Museum, once known as S-21, the photographs and preserved classrooms told chilling stories of the Khmer Rouge era. Well worth visiting in Phnom Penh, the experience is emotionally heavy yet very well organized, with an audio headset guiding you through the history and the prisoners’ stories; meeting two survivors who were once child prisoners was heartbreaking, and allowing about 2.5 hours helps you fully grasp the horrific reality of what the Khmer Rouge did to their own people. Later, at Choeung Ek Genocidal Center, the audio tour guided me through a deeply reflective experience among the memorial stupas and mass graves. I highly recommend both sites for anyone visiting Phnom Penh - not for fun, but for truth, reflection, and respect.

Day 19-21 : Siem Reap, Cambodia

• Stay in Shinta Mani Angkor.
• Explore the Angkor Wat complex, including Bayon Temple and Ta Prohm.
• Discover the countryside around Siem Reap by motorbike and visit Wat Atvea.
• Get dinner at Kabbas Restaurant.

Leaving Phnom Penh behind, I traveled north toward Siem Reap, enjoying peaceful river scenery along the way. Upon arrival, the town immediately felt lively yet relaxed. The first morning at Siem Reap began before dawn at Angkor Wat. Visiting Angkor Wat was truly an unforgettable experience and easily one of the highlights of my Thailand Cambodia Vietnam itinerary 21 days. As the sun slowly rose, the temple’s iconic towers appeared in silhouette, reflected in still pools of water-a truly unforgettable sight. Up close, the detailed bas-reliefs revealed epic stories carved into stone centuries ago. Moving deeper into the Angkor complex, the serene stone faces of Bayon Temple seemed to smile mysteriously from every angle. Then came Ta Prohm, where massive tree roots wrapped around ancient ruins in a dramatic embrace. Finally, climbing the steep steps of Baphuon rewarded me with sweeping views over the jungle canopy.

On the final day, I joined a motorbike tour through the countryside surrounding Siem Reap. We passed quiet villages, wide rice paddies, and stopped at the peaceful Wat Atvea, far from the crowds. A simple local lunch tasted even better after the ride. Before heading to the airport, I visited Artisans Angkor - a great place in Siem Reap to see traditional Cambodian craftsmanship up close and support local artisans. It’s interesting to watch them work and understand how much skill, time, and care goes into each handmade piece. Soon after, it was time for a final farewell-closing a journey filled with history, culture, and unforgettable landscapes.

Is this Thailand Vietnam Cambodia tour 21 days worth it ? Absolutely yes. Following this Thailand Cambodia Vietnam itinerary 21 days, thoughtfully arranged with support from Autour Asia – travel agency in Asia, was one of the most rewarding travel experiences I’ve ever had. From the vibrant streets of Bangkok to the limestone wonders of Ha Long Bay, from the imperial temples of Hue to the majestic sunrise at Angkor Wat, every stop offered something unique. The journey blends culture, history, food, landscapes, and meaningful human connections in a way that feels both diverse and cohesive.