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

Reviewed · HANOI

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

5.0 · 12 reviews From $2,859 Operated by Authentic Adventures · Bookable on Viator
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One trip, three countries, and the stress stays home. This 18-day Vietnam–Cambodia–Thailand route strings together Hanoi, Ha Long Bay, Hoi An, Ho Chi Minh City, Siem Reap, and Phuket with real time built in for exploring. I like the way it handles the “how do we get there?” problem with hotel pickups and an organized plan, not a DIY puzzle. I also like that major costs are folded in, so you’re not budgeting every single day. The main thing to consider is the pace: you’ll have early starts and multiple internal flights, so this works best if you like moving with purpose.

What I really appreciate is the balance of city time and nature time. You get UNESCO-heavy culture in Hanoi, My Son, and Angkor, then you switch gears to boat mornings on Ha Long and the Mekong Delta, finishing with beach downtime in Phuket. The tour’s small-group feel (up to 10) also helps the day-to-day flow, especially when you’re hopping between countries.

Here’s the trade-off to keep in mind: you’re not “lingering everywhere.” You’ll see a lot, but it’s still a packed itinerary. If you want long, slow mornings with lots of free-form wandering, you might feel the schedule tightening—especially around the early sightseeing days.

Key highlights worth planning around

18-day Itinerary Vietnam - Cambodia -Thailand | Best 2026-27 - Key highlights worth planning around

  • Pickup + drop-off included so you spend less time hunting for transfers
  • Major admissions included on the headline sights, from temples to museums
  • Ha Long Bay with a sunrise-style morning and Tai Chi on deck
  • Angkor, with both the famous trio and quieter ruins (Koh Ker + Beng Mealea)
  • Mekong Delta and Cai Rang floating market at the busiest time
  • Phuket + Phi Phi with structured stops like Viking Cave and Monkey Beach

The big-picture value: what you pay for (and what you don’t)

At $2,859 per person for about 18 days, you’re paying for convenience plus access. In this case, the package includes domestic flights, your included entrance fees, and a lot of the daily logistics. It also covers accommodation in a private room plus guided sightseeing and an air-conditioned vehicle when you’re doing land days.

So the value isn’t just the price tag—it’s what it removes from your plate:

  • You don’t have to coordinate guides, drivers, and tickets across three countries.
  • You’re not spending vacation time making last-minute transportation decisions.
  • Your major sightseeing costs are already handled.

What’s not included is also pretty clear: tips, alcoholic drinks, soft drinks, and personal expenses. If you like to tip extra, drink a lot, or snack your way through every break, you’ll want to budget beyond the base price.

Not sure yet? See how this one sits next to a few Hanoi favourites.

Hanoi first: old streets, then Ha Long’s quieter rhythm

18-day Itinerary Vietnam - Cambodia -Thailand | Best 2026-27 - Hanoi first: old streets, then Ha Long’s quieter rhythm

Day 1 is a soft landing. You arrive in Hanoi, get transferred to your hotel, then you’re on your own for leisure time. That’s a good approach because Hanoi can feel like a lot the first hour—crowds, scooters, and lanes that don’t always behave like you expect. Having the rest of the day free helps you get your bearings fast.

On Day 2, you start early from Hanoi’s Old Quarter and head to Ha Long Bay. The route moves you straight to Tuan Chau port, board a transfer boat, and then settle in aboard the cruise. You get a welcome drink and check-in, which matters more than it sounds. It turns “getting on a boat” into a calm transition instead of a rushed scramble.

What I like about the Ha Long portion is the mix of views and pacing:

  • You have a scenic cruising schedule through islands and landmarks in the Gia Luan area and nearby spots.
  • You also have the morning option on Day 3 that starts with a Tai Chi session on the sundeck and a sunrise-style bay experience in Lan Ha Bay.

If you like photos, this part delivers. If you don’t like mornings, make peace with it now. Ha Long days here start early on purpose, because the best light and atmosphere happen before the day gets fully busy.

Hanoi culture day: Temple of Literature time, no traffic stress

18-day Itinerary Vietnam - Cambodia -Thailand | Best 2026-27 - Hanoi culture day: Temple of Literature time, no traffic stress

Back in Hanoi on Day 4, the plan shifts into culture. You’ll visit the Temple of Literature, a UNESCO site. It’s one of those places where you don’t need to “learn a ton” to enjoy it. The atmosphere is calm, and the setting makes it easier to slow down and actually look at details instead of just moving through.

Then comes a key move: you fly onward. The schedule has you transferred to the airport after your Hanoi morning, then you land in Da Nang and transfer to your Hoi An hotel. That’s a smart way to connect regions without burning your day in road time.

Hoi An: My Son and the old town walk

18-day Itinerary Vietnam - Cambodia -Thailand | Best 2026-27 - Hoi An: My Son and the old town walk

Hoi An gets two solid days, and the itinerary uses them well.

Day 5 hits My Son Sanctuary first. It’s UNESCO, and it tends to feel different from a temple you might see in bigger cities. The atmosphere is more spread out, and the setting helps you imagine how this region worked as a cultural center.

In the afternoon, you do a walking-style experience in Hoi An, including the Colorful Local Market and the Japanese Covered Bridge. That’s a nice blend:

  • Market time gives you a human pulse.
  • The bridge and old town moments give you the architectural story.

Day 6 is a freer day in Hoi An. After breakfast, you explore the Old Town at your own pace. That’s where you can slow down for the stuff you actually care about—coffee stops, tiny lanes, or simple people-watching.

On Day 7, you fly from Da Nang onward to Ho Chi Minh City, which keeps the travel fluid and limits long overland days.

Ho Chi Minh City and the Cu Chi day trip

Ho Chi Minh City gets a full set of “big-impact” stops on Day 8:

  • Saigon Notre Dame Cathedral
  • Saigon Central Post Office
  • War Remnants Museum
  • Then lunch
  • And later Cu Chi Tunnels

This is one of those days where timing and tone matter. The morning sights are more architectural and museum-based, while Cu Chi brings the experience into “war history on the ground.” The War Remnants Museum is included, so you can’t treat this as a quick photo stop—it’s a place to spend time and take it seriously.

Cu Chi Tunnels is included with an afternoon departure after lunch. It’s often the highlight for people who like history that feels tangible rather than abstract. The tunnels add sensory reality—heat, narrow spaces, and the sense of scale.

Day 9 and 10 then shift away from city mode and into the Mekong Delta, which works as a reset.

Other ways to spend the same hours around Hanoi

Mekong Delta: My Tho, Ben Tre, Can Tho, and Cai Rang

Day 9 starts with My Tho and a boat journey through the Mekong waterways. Then you continue to Ben Tre, known for its coconut groves, with canal cruising and local workshops. This is a good itinerary structure because it doesn’t only do “scenic water.” It includes human-scale activities too.

You then travel to Can Tho and check in, with the evening left open to unwind. That hotel pause is important here. Mekong days can be tiring—sun, movement, and constant visuals.

Day 10 is the early-bird payoff: Cai Rang Floating Market around 6:30am. The schedule calls it the wholesale market at its busiest time, and that’s exactly why it’s worth doing early. You’ll get the busy trade energy rather than quiet leftovers.

After a market visit, you head back to Ho Chi Minh City for lunch and then return. It’s a long day, but it’s a common trade in this region: you either go early and get the market at its peak, or you go later and accept a calmer scene.

Siem Reap and Angkor: the famous temples plus the quieter ruins

Day 11 is mostly a transition. You have leisure time in Ho Chi Minh City, then fly to Siem Reap. Once you arrive, the rest of the day is yours, which helps you adjust to Cambodia’s pace and recover from the travel.

Day 12 focuses on the Angkor triangle:

  • Angkor Thom
  • Ta Prohm
  • Angkor Wat

This is classic for a reason. The plan gives you variety:

  • Angkor Thom connects you to the scale of the ancient capital.
  • Ta Prohm is the temple where vegetation and stone feel locked together.
  • Angkor Wat is the big-name centerpiece, and it’s the kind of sight that makes you understand why it became world-famous.

Then Day 13 takes a turn toward the less obvious. You depart at 8:00am for Koh Ker, about 1.5 hours away, with time to explore the deserted ruins and forested surroundings. Koh Ker is included as the former Khmer capital and described as heavily forested with a stepped temple complex.

On the way back, you stop at Prasat Neang Khmaw and Prasat Pram, then you have lunch near Beng Mealea. After that, you visit Beng Mealea, an overgrown temple where you explore by foot.

I like this combination because it avoids making your entire Angkor experience only the most photographed spots. If you want the famous temples and also want at least one day that feels more remote and less crowded, Koh Ker + Beng Mealea gives you that.

Phuket: beach time that actually feels like a break

Day 14 is another flight day: from Siem Reap to Phuket, then the rest of the day is leisure. Phuket can be beach-chaos if you’re trying to do everything, but leisure time is a gift. You can choose where you want to base yourself and how much energy you want to spend.

Day 15 is straightforward: breakfast, then relaxation at the beach. The itinerary frames Phuket as ideal for sunbathing, swimming, and good Thai food or seafood. No “must-do” list on this day is a smart choice for most travelers because it gives you room to recover from the temple-heavy stretch.

Day 16 is the day trip that changes everything: you go from Phuket to the islands around Phi Phi. The schedule includes:

  • Transfer to Royal Phuket Marina
  • Head out to Phi Phi
  • Bamboo Island for beach relaxation, snorkeling, and swimming
  • Then Phi Phi stops: lunch buffet on Phi Phi Don, and visits to Viking Cave, Monkey Beach, and Pileh Lagoon on Phi Phi Le
  • Return to the marina and drop-off back at your hotel

This is a packed island day, but it’s the kind where the structure helps. You’re not trying to coordinate boats on your own, and you have predictable timing for each stop.

Day 17 repeats the relaxation theme: breakfast and free beach time. Day 18 is the final morning with breakfast, then a driver transfer to the airport for departure.

Group size and guides: small enough to feel personal, not private-van-perfect

The tour is capped at a maximum of 10 travelers, which can be a big deal in places like markets, museums, and temple circuits. You’re not stuck behind huge crowds, and transitions are smoother.

You also get a tour guide and air-conditioned vehicles on the land segments where they apply. Guides matter most when you’re entering major cultural sites. They help you understand what you’re looking at and how long to spend so you don’t burn time on the wrong corners.

In the feedback you provided, Mr. Tran is repeatedly highlighted as a point person who helps plan the trip and responds fast. Even if the daily guide for each site is different, having a consistent coordinator can reduce those anxious “what happens next?” moments.

The itinerary pace: who will love it and who might not

This tour is best for people who:

  • Want a multi-country highlight route without turning every day into logistics work
  • Like mixing city sights with nature time (Ha Long, Mekong) and then ending on beaches
  • Are comfortable with internal flights and early starts
  • Prefer guided sightseeing to self-navigation

If your travel style is slow, flexible, and you hate being on the clock, you might find the schedule heavy. The good news is the itinerary does build in leisure windows—especially in Hanoi (Day 1), Hoi An (Day 6), Siem Reap (Day 11), and Phuket (Days 15, 17). Still, the core structure is clearly built for seeing a lot.

Should you book this 2026–27 Vietnam, Cambodia, and Thailand tour?

I’d say yes, if you want maximum “core highlights” across three countries while keeping planning stress low. The value comes from the big-ticket items you’d otherwise manage yourself: domestic flights, entrance fees, guided visits, private-room lodging, and most meals (breakfast 18 times, plus lunches and dinners on scheduled days).

I’d hesitate if:

  • You’re sensitive to early mornings like the Ha Long and Cai Rang days
  • You dislike moving between cities frequently
  • You want long free days where you can wander without returning to a schedule

If you fall in the middle—excited to see Ha Long, Angkor, and Phi Phi, but you also want enough downtime to breathe—you’ll likely feel like this itinerary is doing its job.

FAQ

Is this tour mostly guided, or do I have free time too?

You’ll have guided sightseeing on the scheduled activity days, and you also get free leisure time in several cities (like Hanoi on Day 1, Hoi An on Day 6, Siem Reap after arrival, and Phuket on multiple days).

What’s included in the price?

Included items listed are domestic flights, entrance fees for included sights, accommodation in a private room, a tour guide, an air-conditioned vehicle, and meals (breakfast 18 times, lunch 10 times, dinner 2 times).

Are international flights included?

No. The included flights are domestic flights within Vietnam, Cambodia, and Thailand as shown in the itinerary.

Do I need to pay for tickets to the main attractions?

Entrance fees for the included sightseeing destinations are listed as included, so you don’t need to buy those tickets separately for the places on the plan.

How big is the group?

The tour lists a maximum of 10 travelers.

What meals are included?

Breakfast is included for all 18 days. Lunch is included on 10 days and dinner is included on 2 days, for the days where the itinerary provides those meals.

Can I cancel and get a refund?

Yes. The policy states free cancellation up to 24 hours in advance for a full refund, with the usual local time cut-off rules.