18-day Itinerary Vietnam – Cambodia -Thailand | Best 2026-27

The big appeal here is the sheer range: in 18 days, you move from Ha Long Bay’s limestone islands to Angkor Wat, the Mekong Delta, and Phuket’s beaches. You see famous sights, but also get time in Hoi An, Cai Rang Floating Market, Koh Ker, and the narrow canals around Ben Tre.

I like the way the tour handles the awkward parts of Southeast Asia travel. Hotel pickups, domestic flights, air-conditioned vehicles, guides, and entrance fees are arranged for you. I also like the balance between scheduled touring and free time, especially in Hanoi, Hoi An, Siem Reap, and Phuket.

The tradeoff is pace. You cover three countries and several long-distance transfers, so some days begin early or involve a flight, road journey, and hotel check-in. If you want one slow base, this is too busy. If you want a broad first look at mainland Southeast Asia with the logistics handled, it makes good sense.

Key points at a glance

• Ha Long Bay overnight cruise: Sail through Ha Long and Lan Ha Bay, with sunrise Tai Chi, island views, and time on the water.
• Hoi An by foot: Visit My Son Sanctuary, Hoi An Market, and the 400-year-old Japanese Covered Bridge.
• Mekong Delta mornings: Travel by boat through My Tho and Ben Tre, then rise early for Cai Rang Floating Market.
• Two contrasting Angkor days: See Angkor Thom, Ta Prohm, and Angkor Wat, followed by the remote ruins of Koh Ker and Beng Mealea.
• Phuket downtime included: Enjoy two relaxed beach days plus a boat trip to Bamboo Island, Phi Phi Don, and Phi Phi Le.
• Small-group planning: Groups are limited to 10, with private rooms, guides, flights, meals, and transfers included.

How the 18-day route fits together

This is not a single continuous coach tour. It is a coordinated journey using domestic flights, private rooms, local guides, road transfers, boats, and free periods. That distinction matters. You are not hauling yourself across borders by bus, but you will still pack and unpack several times.

The route begins in Hanoi and moves south through central and southern Vietnam. From Ho Chi Minh City, you continue to Cambodia, then finish in Thailand. The order gives you a strong mix of cities, temples, water-based excursions, and beach time.

The advertised price is $2,859 per person. For 18 days, that is about $159 per day before counting the included flights, accommodation, breakfasts, 10 lunches, two dinners, transport, guides, and entrance fees. You still pay for tips, alcoholic drinks, soft drinks, and personal expenses, but the main costs are bundled.

Days 1 to 3: Hanoi and an overnight on Ha Long Bay

Your first day is deliberately light. You arrive in Hanoi, receive a hotel transfer, and have the rest of the day for your own look around. That is useful after a long international flight, since you can rest or get a first feel for the city without a formal tour immediately after landing.

On Day 2, pickup from Hanoi’s Old Quarter begins around 8:00 to 8:30 in the morning. The road transfer to Ha Long takes about an hour according to the schedule, followed by a transfer boat from Tuan Chau port to the cruise vessel.

Once aboard, you receive a welcome drink, check in, and have lunch. The boat then passes areas including Gia Luan, Thoi Quyt Island, Ke Ga, and Finger Island. The best part is the change of pace. After Hanoi’s traffic and crowded streets, you have open water, karst formations, and a full afternoon on the boat.

Day 3 begins early, with Tai Chi on the sundeck at 6:15 and breakfast from 7:00 to 7:45. This is a good outing for anyone who enjoys quiet morning views, but it is not a sleep-in morning. The boat returns to Hanoi around 5:00 p.m., leaving you a free evening.

The schedule refers to Ha Long Bay and Lan Ha Bay, so check the exact cruise route and cabin details before booking. The plan gives you only a short Hanoi visit before and after the cruise, so you will need to use your free time wisely.

Day 4: Hanoi’s cultural sights before Hoi An

Day 4 includes free time in Hanoi before a visit to the Temple of Literature. This is one of the more useful cultural stops on the route. It offers a calmer setting than the city streets and introduces Vietnam’s long academic and Confucian traditions.

Afterward, you transfer to the airport and fly to Da Nang. A driver takes you onward to your hotel in Hoi An. This is a transfer-heavy day, but the flight saves you from a much longer overland journey down the coast.

You should expect the day to feel split in two: a short Hanoi experience followed by airport time and a Hoi An arrival. Keep your essentials in a small day bag rather than burying everything in checked luggage.

Days 5 and 6: My Son Sanctuary and Hoi An

Day 5 starts with My Son Sanctuary, a UNESCO-listed site associated with the ancient Champa civilization. The ruins give you a different side of central Vietnam, with brick temple structures and religious traditions distinct from the Vietnamese sites in Hanoi.

The afternoon shifts to Hoi An. You visit the local market, walk through the old town, and see the Japanese Covered Bridge, a 400-year-old landmark linked to the town’s long history of cultural exchange. These are easy places to appreciate on foot, and the contrast between the quiet ruins at My Son and Hoi An’s compact streets works well.

Day 6 is intentionally unhurried. After breakfast, you have several hours to explore Hoi An on your own. This is one of the route’s smartest choices. Hoi An is better when you have time to wander rather than rush from one checkpoint to another.

The schedule does not list extra activities for this day, so you can use it for a relaxed walk, personal shopping, or simply a slower morning. Since the package includes hotel breakfast, lunch planning is up to you on free periods unless another meal is specified.

Days 7 to 10: Ho Chi Minh City and the Mekong Delta

On Day 7, a driver takes you to the airport for your flight from Da Nang to Ho Chi Minh City. After hotel check-in, the rest of the day is yours. This gives you a chance to get your bearings before the next day’s packed program.

Day 8 combines city landmarks with the Cu Chi Tunnels. The morning includes the Saigon Notre Dame Cathedral, the Central Post Office, and the War Remnants Museum. The cathedral is an important architectural symbol, while the post office is known for its European design with Asian decorative touches.

The War Remnants Museum is a serious stop. It presents the Vietnam War from Vietnam’s point of view, with material that can be emotionally difficult. Give yourself time to process it rather than treating it as a quick photo stop.

After lunch, you drive to the Cu Chi Tunnels. The site explains how underground passages were used during the war and shows the practical challenges of life below ground. The combined city-and-tunnel schedule is efficient, but it is a full day with several very different subjects.

Day 9 heads into the Mekong Delta. In My Tho, you take a boat along the river, then continue to Ben Tre for narrow canals, coconut groves, and visits to local workshops. The water-based sections are the reason to include this region. You see how transport, farming, and daily work connect to the river.

Later, you continue to Can Tho for the night. This overnight stay matters because it makes the early Cai Rang visit possible without an exhausting predawn drive from Ho Chi Minh City.

Around 6:30 a.m. on Day 10, you visit Cai Rang Floating Market. The market is busiest in the morning, when boats sell fruit and vegetables wholesale. You also cruise through smaller canals before returning for lunch and the drive back to Ho Chi Minh City.

This is one of the most time-sensitive parts of the tour. If you dislike early mornings, note that the schedule is built around the market’s busiest period. If you enjoy seeing a working market rather than a staged attraction, it is a valuable use of your morning.

Days 11 to 13: Siem Reap and the temples of Angkor

Day 11 gives you some free time in Ho Chi Minh City before your flight to Siem Reap. On arrival, you transfer to your hotel and have the rest of the day at leisure.

Day 12 is the main Angkor day. You visit Angkor Thom, the former Khmer capital, and Ta Prohm, where trees and vegetation grow around the temple ruins. Ta Prohm has an atmospheric setting, but uneven ground and tree roots mean you should expect a walking visit rather than a polished museum experience.

The afternoon is reserved for Angkor Wat. This enormous religious complex is the best-known site in Cambodia, and the scale can be difficult to grasp from photographs alone. The schedule gives you around two hours there, so listen closely to your guide and make note of the areas you most want to see.

The day also includes a buffet dinner with a traditional show. That gives you an easy evening after the temple visits, though the day is long and the heat can add to the fatigue.

Day 13 is more remote and adventurous. You leave Siem Reap at 8:00 a.m. for Koh Ker, about an hour and a half away. Koh Ker was once a Khmer capital and is now a forested temple complex, with the main temple built as a seven-tiered pyramid.

On the return route, you stop at Prasat Neang Khmau and Prasat Pram, then have lunch near Beng Mealea. Beng Mealea offers a more overgrown ruin experience, reached by a short walk through the forest.

This day is a strong complement to Angkor Wat. The famous temples provide scale and major monuments, while Koh Ker and Beng Mealea offer a quieter sense of distance and decay. The drawback is the amount of driving. You should choose this day for its remote ruins, not if you want another easy local morning in Siem Reap.

Days 14 to 18: Phuket, Phi Phi, and time to slow down

On Day 14, you have free time in Siem Reap before your airport transfer and flight to Phuket. After arrival, the rest of the day is open.

Days 15 and 17 are beach days, and Day 18 gives you a final morning before the airport transfer. These open blocks are welcome after the packed temple and city touring. You can relax, swim, eat Thai food, or use the time simply to recover from the pace of the first two weeks.

Day 16 is the main Phuket excursion. You transfer to Royal Phuket Marina and take a boat toward Phi Phi. Around 10:30, you reach Bamboo Island for swimming, snorkeling, and time on the white sandy beach.

After a buffet lunch at Phi Phi Don, the boat continues to Phi Phi Le, with stops near Viking Cave, Monkey Beach, and Pileh Lagoon. You return to Royal Phuket Marina around 2:30, followed by hotel drop-off.

The Phi Phi trip is a full boat day, not a quiet beach outing. You will have several stops and a fixed return schedule. That suits you if you want to see several well-known islands in one day. For a slower beach holiday, the free days in Phuket are the better part of this section.

What is included, and what still costs extra

The package includes private-room accommodation, domestic flights, air-conditioned vehicles, tour guides, entrance fees for included sights, hotel breakfast, 10 lunches, and two dinners. Hotel pickups and drop-offs are also part of the plan, which removes much of the daily negotiation over taxis and drivers.

The phrase domestic flight is important. The route includes flights within the trip, but international airfare to Hanoi and home from Phuket is not listed as included. Confirm the exact flight arrangements and baggage rules before you pay.

You should budget separately for tips, alcohol, soft drinks, and personal purchases. The package is strongest for someone who values convenience and wants the major touring costs gathered into one price.

The group maximum is 10 people. That is small enough to make guide interaction possible without turning every stop into a large procession. Private rooms also make the package more comfortable for couples and families.

Service and planning

The trip is coordinated by Authentic Adventures, with Mr. Tran identified as a main contact. The strongest praise centers on prompt communication, reliable pickups, drivers, guides, hotels, and flights. Several families also used the service, including one group of 12 who arranged the trip with the company.

That does not remove the need to check details. A multi-country trip has many moving parts, and you should confirm hotel names, flight times, cruise cabin category, meal arrangements, and the exact airport transfer plan before departure.

Confirmation is issued within 48 hours of booking, subject to availability. Most people can participate, and the experience is near public transport, though the itinerary itself relies heavily on arranged vehicles and boats.

Free cancellation is available up to 24 hours before the start time for a full refund. Changes made inside that 24-hour window are not accepted, and weather or minimum-group requirements can lead to a different date or a full refund.

Who should book this 18-day trip?

I would recommend it to a first-time visitor who wants to see several major Southeast Asian destinations without arranging every hotel, transfer, guide, and entrance ticket alone. It also suits couples, families, and small groups that prefer private rooms and a clear daily plan.

You should be comfortable with early starts, airport transfers, boat rides, long touring days, and several hotel changes. The itinerary gives you free time, but it is not a slow journey.

At $2,859 per person, the value depends on how much planning you would otherwise do yourself. With accommodation, flights within the trip, meals, guides, vehicles, and admission fees included, the price is reasonable for a tightly organized 18-day route. You may find a cheaper trip by booking each part separately, but you would take on the coordination yourself.

Should you book it?

Book this tour if you want three countries in one well-supported trip, with famous sights balanced by less obvious stops such as Koh Ker, Ben Tre, and Cai Rang Floating Market. The best features are the practical coordination, small group size, free time in key places, and the strong range of scenery and culture.

Skip it if your ideal holiday means staying in one city, avoiding early mornings, or spending most days at the beach. For everyone else, this is a demanding but rewarding introduction to Vietnam, Cambodia, and Thailand, especially if you value having Mr. Tran and the local teams manage the details.

FAQ

How long is the tour?

The tour lasts approximately 18 days, beginning in Hanoi and ending in Phuket.

Where does the tour begin?

The experience begins in Hanoi, Vietnam. Arrival transfer to your hotel is provided.

Where does the tour end?

The tour ends in Phuket, Thailand, with a driver transferring you to the airport on Day 18.

Which countries does the tour visit?

The route covers Vietnam, Cambodia, and Thailand.

Which cities are included?

The itinerary includes Hanoi, Da Nang and Hoi An, Ho Chi Minh City, Siem Reap, and Phuket.

Are domestic flights included?

Yes. Domestic flights are included in the package. International flights are not listed as included.

Are hotels included?

Yes. Accommodation in a private room is included.

Are meals included?

Breakfast is included for 18 days, along with 10 lunches and two dinners. Tips, alcoholic drinks, soft drinks, and personal expenses are not included.

What is the maximum group size?

The experience has a maximum of 10 people.

Can I cancel for a refund?

You can cancel at least 24 hours before the local start time for a full refund. Cancellations or changes made less than 24 hours before the start time are not accepted for a refund.