Frequent flights make it possible to visit six regions of Thailand and Cambodia in three weeks. First-timers should include Bangkok's Grand Palace and Siem Reap's Angkor Wat on their itinerary. History buffs will appreciate memorial sites in Kanchanaburi and Phnom Penh, and culture seekers can visit Tonlé Sap's floating villages and northern Thailand's hill tribes. Foodies will love the market tours, while outdoorsy travelers can hike in Erawan National Park and snorkel off southern Thailand's islands.

Itinerary #1: Epic Highlights Tour of Thailand & Cambodia: Ancient Temples, Lively Markets & Pristine Beaches

Perfect for first-time visitors seeking a balance of history, culture, and cuisine, this highlights itinerary kicks off in Thailand with tours of Bangkok's temples and Ayutthaya's ruins, a hill tribe visit in Chiang Rai, a waterfall hike in Chiang Mai, and snorkeling off the island of Ko Samui. Hop over to Cambodia for street food tasting in Siem Reap, plenty of time to explore the ruins of the Angkor Wat temple complex, shopping in Phnom Penh's markets, and more. 

Explore some of Southeast Asia's standout temples and historic sites, including Chiang Rai's Blue Temple
Visit some of Southeast Asia's standout temples and historic sites, including Chiang Rai's Blue Temple
Day Highlights Overnight
Day 1 Arrive in Bangkok (Thailand), Self-Guided City Tour Bangkok
Day 2 Guided Excursion to Bangkok Palaces & Temples Bangkok
Day 3 Bang Pa-In Summer Palace, Visit Ancient Ayutthaya Bangkok
Day 4 Fly to Chiang Rai, Discover Temples, Museums & Night Bazaar Chiang Rai
Day 5 Rural Chiang Rai: Hill Tribes, Golden Triangle & Baan Dam Museum Chiang Rai
Day 6 Visit the Blue Temple, Transfer to Chiang Mai Chiang Mai
Day 7 Doi Inthanon National Park, Hiking on Mae Klang Luang Nature Trail Chiang Mai
Day 8 Kanta Elephant Sanctuary, Visit Bua Tong Waterfall Chiang Mai
Day 9 Fly to Ko Samui, Beach Day & Night Market Ko Samui
Day 10 Ang Thong National Marine Park Snorkel & Kayak Tour Ko Samui
Days 11-12 Beaches & Sightseeing Around Ko Samui Ko Samui
Day 13 Fly to Siem Reap (Cambodia), Evening Foodie Tour via Tuk-Tuk Siem Reap
Day 14 Discover the Realm of Angkor Wat Siem Reap
Day 15 Guided Exploration of Angkor Temples  Siem Reap
Day 16 Day Trip to Phnom Kulen National Park Siem Reap
Day 17 Transfer to Battambang, Guided City Walk & Ride the Bamboo Train Battambang
Day 18 Battambang by Bike: Markets, Mountains & Caves Battambang
Day 19 Transfer to Phnom Penh via Silversmith Visit, Cyclo City Tour Phnom Penh
Day 20 Guided Tour of Phnom Penh's Museums & Markets Phnom Penh
Day 21 Depart Phnom Penh  

Get a taste of Bangkok's multicultural influences as you sample street food in Chinatown, then join the rowdy crowds at a stadium for a Muay Thai kickboxing match. In the morning, you'll set out on a temple tour that includes the giant reclining Buddha at Wat Pho, then board a long-tail boat to Ayutthaya. Here, you'll admire the former capital's ancient ruins before flying to Chiang Rai, home to Lanna architecture, dense forests, and imposing mountains. You'll have a chance to meet some hill tribe members and learn about their traditions before your driver transfers you to Chiang Mai.

Trek the forested Ban Mae Klang Luang trail and cool off in a waterfall before flying south to Ko Samui to dive into island life on a snorkeling tour at Ang Thong National Marine Park. Then, you're off to Cambodia, starting with Siem Reap where you'll tour the Angkor Wat complex and nibble nom krok (coconut pancakes) and other street eats. Leave the city behind on a day trip to Phnom Kulen, a sacred pilgrimage destination where you'll find ancient carvings in the riverbeds. Wrap up your trip in Phnom Penh with a history lesson at the Tuol Sleng Museum and shopping at the Russian Market. Learn more

Itinerary #2: Hidden Treasures of Thailand & Cambodia: Bangkok to Phnom Penh

This culture and nature journey is a great choice for those eager to learn about Thai and Cambodian traditions and history while enjoying plenty of time in nature. Highlights include a bike ride through Bangkok's "green lung," elephant interactions at a Khao Sok sanctuary, a ceremony with a Buddhist monk, hot springs and waterfall experiences in Pai, a boat ride to the Tonlé Sap floating villages, a tour of Angkor Wat, and sobering visits to the memorials in Phnom Penh. The majority of this trip is focused on Thailand, so it's best suited to those interested in adding a few days in Cambodia to their Thailand tour.

Cross over rice fields and valleys on Su Tong Pae Bridge
Pass through rice fields and valleys on Su Tong Pae Bridge
Day Highlights Overnight
Day 1 Arrive in Bangkok (Thailand), Cruise to Wat Saket & Khao San Road Bangkok
Day 2 Bicycle Tour Across Bang Krachao, Food Tour in Chinatown  Bangkok
Day 3 Visit Mae Klong Railway Market & Damnoen Saduak Floating Market Bangkok
Day 4 Transfer to Chiang Mai via Phitsanulok & Sukhothai Chiang Mai
Day 5 Cycle Through Chiang Mai's Countryside  Chiang Mai
Day 6 Ascend Doi Suthep, Visit Huay Tung Tao Reservoir, Tuk-Tuk Food Tour Chiang Mai
Day 7 Transfer to Pai, Visit Hot Springs, Pai Canyon & the Walking Street Pai
Day 8 Explore Baan Rak Thai, Tham Pla-Pha Suea National Park & Su Tong Pae Pai
Day 9 Visit Santichon Chinese Village, Trek to Pam Bok Waterfall Pai
Day 10 Fly to Surat Thani, Transfer to Khao Sok National Park  Khao Sok 
Day 11 Interact with Elephants at the Khao Sok Elephant Sanctuary Khao Sok 
Day 12 Transfer to Khao Lak, a Coastal Town on the Andaman Sea Khao Lak
Day 13 Explore the Old Town of Takua Pa, Kayak Down the "Little Amazon"  Khao Lak
Day 14 Speedboat Tour of the Similan Islands Khao Lak
Day 15 Transfer to Phuket, Half-Day Tour of the Island Phuket
Day 16 Phuket Adventures: Whitewater Rafting, ATV Excursion & Ziplining Phuket
Day 17 Fly to Siem Reap (Cambodia), Gateway to the Angkor Ruins Siem Reap
Day 18 Explore Angkor Wat, Angkor Thom & Ta Prohm Siem Reap
Day 19 Visit the Floating Villages of Tonlé Sap, Transfer to Phnom Penh Phnom Penh
Day 20 Tour the Tuol Sleng Genocide Museum & Choeung Ek Memorial Phnom Penh
Day 21 Depart Phnom Penh  

Your first day in Bangkok begins with a canal cruise and a climb to the top of Wat Saket to watch the sunset. The next morning, you'll bike the elevated pathways through Bang Krachao's green spaces, and fuel up with pad thai in Chinatown. Next, you'll have a chance to observe the street vendors' unique routine at Mae Klong Railway Market, where they pack up and reset their stalls each time a train passes. Then you'll board a train to Phitsanulok, where your driver will be waiting to take you to Sukhothai Historical Park for a peaceful stroll amid Buddha statues before continuing to Chiang Mai.

Enjoy a slower pace as you bike into the countryside beyond Chiang Mai, stopping to visit a farmhouse and sample rambutan at a market. Keep the leisurely vibes going in Pai, where you'll soothe your muscles in the hot springs and, if you're ready for another outdoor adventure, hike to Pha Sua Waterfall. Then, fly to Surat Thani for some bird-watching in Khao Sok National Park and a beach day at Khao Lak. After whitewater rafting in Phuket, fly to Cambodia and meet the famous carved faces of Bayon in Siem Reap, then delve into the country's tragic past at the Choeung Ek Memorial in Phnom Penh. Learn more

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Itinerary #3: Active Exploration of Thailand & Cambodia

Energetic travelers who want to make the most of their time will appreciate the variety of outdoor adventures and cultural experiences on this active itinerary. In Thailand, you'll barter at the floating market, explore several caves, hike in Erawan National Park, zipline in Chiang Mai, and swim in the Phi Phi Islands. In Cambodia, you'll visit historical sites—including memorials in Battambang and the Tuol Sleng Genocide Museum in Phnom Penh—and the archaeological wonders of Angkor Wat.

In northern Chiang Mai, you'll discover ancient temples and set off into the countryside on active adventures
In northern Chiang Mai, you'll set off into the countryside
Day Highlights Overnight
Day 1 Arrive in Bangkok (Thailand), Dinner Cruise on the Chao Phraya River Bangkok
Day 2 Tour the Temples & Grand Palace of Bangkok Bangkok
Day 3 Visit the Mae Klong Railway Market & Damnoen Saduak Floating Market Bangkok
Day 4 Transfer to Kanchanaburi, Visit the Hellfire Pass Museum & Krasae Cave Kanchanaburi
Day 5 Explore Erawan National Park, Visit a Mon Village, Enter Lawa Cave  Kanchanaburi
Day 6 Fly to Chiang Mai via Bangkok, Explore the City's Temples Chiang Mai
Day 7 Play with Elephants at Baan Chang Elephant Park Chiang Mai
Day 8 Cycle to the Ping River, Cooking Class with a Lanna Family Chiang Mai
Day 9 Chiang Mai Forest Zipline Adventure Chiang Mai
Day 10 Fly to Surat Thani, Transfer to Khao Sok National Park, Evening Safari Cruise Khao Sok 
Day 11 Enjoy a Leisurely Morning, Hike Through Khao Sok's Rainforest Khao Sok 
Day 12 Morning Boat Safari & Free Time in Khao Sok, Transfer to Krabi Krabi
Day 13 Cruise to Ko Phi Phi Ley & Ko Phi Phi Don Krabi
Day 14 Explore Krabi's Beaches & Temples at Your Own Pace Krabi
Day 15 Fly to Phnom Penh (Cambodia), Visit the Royal Palace & National Museum Phnom Penh
Day 16 Tuol Sleng Museum & Choeung Ek Memorial, Transfer to Battambang  Battambang
Day 17 Bike Tour in the Cambodian Countryside, Visit Phnom Sampeau's Caves Battambang
Day 18 Transfer to Siem Reap, Half-Day Khmer Village & Tonlé Sap Lake Tour Siem Reap
Day 19 Explore Angkor Thom & Angkor Wat Siem Reap
Day 20 Watch the Sunrise Over Angkor Wat, Visit More Angkor Temples Siem Reap
Day 21 Depart Siem Reap  

See the city lights along the Chao Phraya River as you enjoy a dinner cruise on your first night in Bangkok, then learn about traditional architecture on a temple tour and practice your bartering skills at the Damnoen Saduak Floating Market. Next, your driver will take you to Kanchanaburi, where you can swim at Erawan Falls and pay your respects to prisoners of war at the Hellfire Pass Museum before flying to Chiang Mai. In this lush northern region, you'll interact with elephants at Baan Chang Elephant Park, prepare a meal with a local Lanna family, and soar across the treetops on a zipline adventure.

Trade the northern forests for the southern ones as you fly to Surat Thani and set off on a hike in the jungles of Khao Sok National Park. Then, it's beach time; your driver will whisk you to Krabi for a cruise to the Phi Phi Islands, where you can swim and see ancient paintings at Viking Cave. Fly to Phnom Penh and dive into Cambodian cultural heritage at the Royal Palace, then gain a better understanding of Cambodia's dark history on a visit to the Killing Fields. Engage with local artisans in a traditional village, then celebrate your Southeast Asia journey as you watch the sunrise over Angkor Wat. Learn more

Itinerary #4: Islands, Temples & Beaches in Thailand & Cambodia

This epic island-hopping tour is an excellent option for beachgoers who also want to experience some culture and cuisine. You'll cruise amid Phang Nga Bay's limestone cliffs, go beachcombing and rock climbing at Railay, browse the stalls at night markets in Bangkok and Krabi, and snorkel off Ko Samui. Fly to Cambodia next to sample street food in Siem Reap, watch the sunrise at Angkor Wat, enjoy a bioluminescence experience at Koh Rong, and more. 

Visit the iconic Maya Bay, seen in the movie "The Beach"
Zip around Thailand's Phi Phi Islands and visit the iconic Maya Bay, seen in the movie "The Beach"
Day Highlights Overnight
Day 1 Arrive in Phuket (Thailand), Thai Massage at Oasis Spa Phuket
Day 2 Speedboat Tour of the Phi Phi Islands Phuket
Day 3 Boat Cruise to Phang Nga Bay Phuket
Day 4 Transfer to Railay, Rock Climbing, Beach Time & Bioluminescence Railay
Day 5 Island Hopping Around Railay by Speedboat Railay
Day 6 Ao Nang Elephant Sanctuary Half-Day Tour Railay
Day 7 Transfer to Krabi, Wat Tham Suea Temple & Night Market Krabi
Days 8-9 Two Free Days to Explore Krabi at Your Own Pace  Krabi
Day 10 Fly to Ko Samui, Relax on Bophut Beach, Visit Fisherman's Village Ko Samui
Day 11 Speedboat Tour of Angthong Marine National Park Ko Samui
Day 12 Explore Ko Samui's Beaches, Waterfalls & Markets Ko Samui
Day 13 Fly to Bangkok, Explore the Capital's Landmarks Bangkok
Day 14 Visit Damnoean Saduak Floating Market, Tour the Grand Palace Bangkok
Day 15 Fly to Siem Reap (Cambodia), Street Food Tour by Tuk-Tuk Siem Reap
Day 16 Watch the Sunrise Over Angkor Wat, Explore Angkor Thom & Ta Prohm Siem Reap
Day 17 Visit the Floating Villages of Tonlé Sap, Fly to Sihanoukville Sihanoukville
Day 18 Transfer to the Tropical Paradise of Koh Rong Koh Rong
Day 19 Snorkeling, Barbecue Dinner & Glowing Plankton Koh Rong
Day 20 Spend Your Last Day Enjoying the Island's Natural Landscapes Koh Rong
Day 21 Transfer to Phnom Penh via Sihanoukville, Depart  

Melt away your travel stress with a Thai massage on arrival in Phuket. After a good night's rest, you'll be ready for a full-day snorkeling tour of the Phi Phi Islands. Another day at sea awaits; this time, you'll cruise to Phang Nga Bay's limestone cliffs and canoe to Hong Island's caves. From there, transfer to Railay, where you can try rock climbing by day and observe bioluminescent plankton at night. Continue down the coast to Krabi and take the stairs to the summit of Wat Tham Suea for views over the countryside and sea before catching a flight to Ko Samui, where you'll snorkel in Angthong Marine National Park.

Before leaving Thailand, you'll have two days in Bangkok to explore the city's markets (including Jodd Fairs Night Market), temples, and canals at your own pace. Then, you'll fly to Siem Reap and get your first taste of fish amok (steamed fish curry) and other Cambodian favorites on a food tour via tuk-tuk. Set an early alarm to see the sunrise over Angkor Wat before heading to Sihanoukville. Spend a day at the beach or casino, then board a boat to the island of Koh Rong. Here, you'll finish up your trip with a zipline excursion and more snorkeling before transferring to Phnom Penh for your departing flight. Learn more

More Great Thailand Itineraries

Looking for more inspiration for your trip to Thailand? Check out these other Thailand itineraries, with outdoor adventures, cultural trips, and best-of tours to hit the highlights.


Map of 3 Weeks in Thailand & Cambodia - 4 Unique Itinerary Ideas
Map of 3 Weeks in Thailand & Cambodia - 4 Unique Itinerary Ideas